People who are interested in modern construction or manufacturing often come across a material such as polyurethane. What it is and how it is used, you can learn in detail in this article. This substance is a very elastic polymer, which is widely used in various areas of our life: construction, medicine, heavy, shoe or clothing industries. Naturally, this substance is synthetic. It has a lot of advantages, which you will now learn about.

Material advantages

The presented material has quite a lot of advantages:

· Resistance to wear, aging and external influences.

· High durability.

· It is possible to change the level of elasticity of the material.

· Possibility of use of substance at high loading.

· A wide range of temperatures in which polyurethane (what it is you already know) can be operated.

It is used in many spheres of human life.

· Sealants, clothing, insulation, shoes, pipes and other products that are used in everyday life are produced from it.

· Durability.

· Affordable cost. This material, no matter what characteristics it has, is inexpensive, so it can be purchased by anyone with an average and even

· Practicality and versatility.

No deformation.

· Does not leave marks on the surface with which they interact.

Properties and technical characteristics of the material

The most common material today is polyurethane. What it is, what advantages it has, you already know. Now let's look at the technical characteristics of this substance.

So, the presented material can work quietly in an aggressive environment, while its qualitative properties practically do not change. In addition, the substance is perfectly exploited in a fairly wide temperature range: from -60 to +80 degrees. Sometimes it can be heated up to 120 o, but this process should not last long, otherwise the material will simply collapse.

The polymer is able to withstand heavy loads, is less subject to aging than other substances. It is resistant to wear, moisture, temperature extremes, sunlight, salt, organic solvents. Polyurethane (what it is, you already know) is considered a very durable material. At the same time, its elasticity can be programmed during the production process. This material may have different characteristics, on which the scope of its application depends. It should be noted that the polyurethane may consist of one or more components.

Features of the manufacture of the presented material

It should be noted that the production of polyurethane cannot be called simple. It takes a lot of effort, work and energy. The process itself occurs by mixing and several elements: polyol and isocyanate. In addition, polyesteramines are also added to this mixture. The whole process is carried out on fairly expensive equipment.

It should be noted that the feedstock is produced in a few countries: Russia, Germany, the USA and Italy. The presented material is manufactured and processed in several ways: casting, pressing, extrusion.

What products are made from the presented material?

Polyurethane is a very common material. A lot of products are made from it. For example, in medicine, it is used to produce condoms, which are durable, smooth, low cost, and environmentally friendly. Tires for automobile wheels are also made from the presented substance. They not only last much longer than rubber ones, but also do not leave marks.

You should also remember such polyurethane products as o-rings, bushings, cuffs. This substance is used as a heater. The presented material is also used in the furniture industry for the manufacture of mattresses. If you buy polyurethane rollers, then you can be sure that they will last a long time.

A variety of suction cups, guides, bandages, linings, pulleys, pipe rails and other items are also produced from this material.

Where is liquid polyurethane used?

It must be said that this material can be used in different form: liquid, foam and solid. The first type of substance is most often used for waterproofing flat roofs. The advantage of this material is resistance to wear, moisture and other external influences. In addition, liquid polyurethane can be applied to difficult areas of the roof, where it would be difficult to use another insulator.

It should be noted that the presented material can close up holes and cracks in the old roof. The advantages of such waterproofing are:

Good adhesion;

Fast drying;

Strength;

Availability;

Ease of use;

Resistance to the negative influence of the external environment;

Ecological purity.

Decorative products from the presented material: advantages and features of use

It must be said that the presented material is used for the production of interior decoration elements. For example, decorative polyurethane is used for the production of cornices, ceiling moldings or other products. Very popular is stucco molding from the presented substance. It is distinguished by its strength, resistance to mechanical stress, the ability to create non-standard shapes. It should be noted that you can make decorative elements to order.

The advantages of such products are:

Strength;

Decorative attraction;

Ease of installation;

Ease of maintenance and operation;

Low cost;

Various shades.

I must say that, unlike gypsum decorative elements, polyurethane products do not turn yellow over time. In addition to cornices, you can order the manufacture of columns, pilasters, beams for stairs.

Features and uses of polyurethane foam

The most popular material in construction and repair is polyurethane foam. It has a low weight, good heat and sound insulation qualities, as well as low cost. It is resistant to steam, moisture, sunlight and temperature changes.

Using such a substance is quite simple. You just need to apply it to the desired area. However, one must also take into account the fact that the material is able to increase in size. The advantage of the substance is good adhesion, the possibility of staining.

In principle, these are all the features of the use of the presented material. Good luck!

Jacket "Mountain-3" is recommended for outdoor activities (tourism, hiking), as well as a field uniform for mountain rifle units of the RF Ministry of Defense of sight On buttons Adjustment of volume of a sleeve above a wrist the hidden elastic band on a flypaper Elbows are protected by a polyurethane foam removable insert (included in the package) Pockets: two lower volume pockets on buttons are closed by valves "Napoleon" pocket on a breast inclined pockets on sleeves, are closed by valves on a flypaper internal moisture protection pocket for documents with Velcro Tightening: at the waist with a cord at the bottom of the jacket of the jacket See all items by tag of the jacket with a rubber cord Material: 100% cotton, a new high-quality tarpaulin, superior to analogues used by most other manufacturers New processing technology has significantly improved the resistance of the fabric to fading and abrasion Reinforcing overhead ki -100% polyester polyester View all items by tag polyester rip-stop Attention! Before washing, remove the protective inserts in the knee/elbow pads from their respective pockets. Do not wash protective inserts in the washing machine. When washing tarpaulin products in a washing machine, traces of abrasion may appear. SIZING: Download Size Chart (.xlsx) for exact definition REVIEWS: Review by Survival Panda Discuss this model on the forum YOU MAY BE INTERESTED IN:

Demi-season boots, in which the berets and the upper part of the vamp are made of nylon fabric with a density of 1000 D, and the lower part of the vamp are made of genuine chrome leather 1.6 mm thick, are perfect for law enforcement and security forces, as well as tourists or people who are fond of active outdoor activities. The undoubted advantages of this model is that the front part of the boot is protected from mechanical damage and moisture by an overlay made of Matrix leather and, in addition, the toe and heel are reinforced with a special thermoplastic material to maintain their shape. The lining in this model is made of durable nylon mesh. The high lacing system securely fixes the model on the leg, in addition, the presence of three pairs of hooks in the upper part of the ankle allows you to quickly lace up the boots. The deaf valve prevents foreign objects from entering the boot. The flexible and durable rubber outsole is equipped with a coarse tread pattern that provides optimal traction on a wide variety of surfaces, be it sand, gravel, rocks or grass. ASSAULT BOOTS URBAN TYPE This model is a classic "tactical" police boot. It has been tested in many special units of Russia. Received the highest marks for such indicators as wear resistance and comfort from the employees of the SOBR "BULAT". Top combination: genuine chrome leather (1.4-1.6) + high-strength fabric made from non-textured 1680D nylon thread. Lining: laminated mesh Sole: rubber of increased wear resistance (Italy), BUTEK 1. Sole fastening method: adhesive. Supinator: metal. Toe cap and heel counter: Reinforced thermoplastic material. Sizes: 40-46. The deaf valve protects a foot from influence of environment (dust, dirt). Black color. The toe part is reinforced - leather with high-strength PU coating "Matrix" (Italy). Weight: 545 gr. Specifications Assault boots. Model Viper 2331 Producer BUTEX Country Belarus Top material genuine chrome leather (1.4-1.6) + high-strength nylon fabric 1680D Lining material laminated mesh Sole fastening adhesive Metal arch support Toe and heel reinforced from thermoplastic material Sole material rubber of increased wear resistance BUTEK 1, (Italy) Available size range 40-46 Shoe color black Valve type deaf valve Protection with overlays made of high-strength Matrix leather with PU coating (Italy). toe

Straight silhouette, length to the middle of the thigh Hood with a detachable edging, adjustable in volume and oval of the face Insulated with two layers of synthetic winterizer, which is 270 g/m or washable) Front zipper with two locks, unzips both from the top and bottom of the jacket Windproof inner and outer flaps covering the front "lightning"; edging on the hood; high collar and bottom of the sleeves, adjustable in size with Velcro with an internal knitted cuff, prevent the penetration of cold under clothing two inside pockets four pockets at the bottom of the jacket Drawstrings: along the waist and bottom of the jacket Material: 100% Polyamide with PU coating Product weight: 46/176 size -1140 g 50/176 size -1207 g 54/182 size - 1302 g 58/188 size -1430 g Designed as a combat jacket, which meant serious checks and tests, having survived outbursts of popular worship and periods of cooling, it returned to us calm and confident in its reliability, functionality and durability. Warm, durable, windproof and water repellent, thanks to the fabric used in the manufacture (100% polyamide with PU coating), "Alaska" provides complete protection from snow, wind, moisture and cold. Insulation - two layers of synthetic fiber synthetic winterizer (270 g / m 2), which, unlike down, does not absorb moisture and is not afraid of frequent washing. The polyester lining is quilted along with it, which increases the life of the jacket (the padding polyester stays in place when dry-cleaning or washing). Unlike expensive membrane fabrics and down insulation, these materials do not require special personal care and do not raise the price of the jacket to exorbitant heights. The hood, characteristic of Alaska, with fur trim, in combination with a high collar, covers almost the entire face, if necessary, and is adjustable in volume and oval of the face. The edge, made of natural or artificial fur (of your choice), can be unfastened from the hood. The inside of the collar and the edge of the hood that touches the face are lined with soft fleece. Serious barriers to wind and cold are also the windproof outer and inner flaps of the front two-way zipper, the belt and the bottom of the jacket that are pulled down with a cord. Sleeves with internal knitted cuffs are regulated by armor on "flypaper". The length of the jacket (to the middle of the thigh) allows you to stay in the cold for a long time, and the free silhouette does not restrict movement. Large buttons allow you to unbutton the jacket without taking off your gloves. The voluminous, warm front pockets are trimmed inside with soft jersey fabric, and the large buttons on the upper pockets allow you to unbutton them with gloves. In addition to the six front pockets, there are two more pockets on the sleeve and two inside. Warm comfortable jacket designed for long stays in the cold.

Demi-season jacket (smok), outer layer Lining - light synthetic fabric, quick-drying, protects from the wind Large Canadian buttons (on a tape leg), difficult to tear off, easy to unbutton with hands in thick gloves All main seams are zaposhivochnye (lock) with a chain stitch. All stressed areas are reinforced with zigzag fasteners Loose straight cut, specially designed for prying warm layers warm thermal underwear, fleece jackets, light insulated jackets like Base Primaloft) with zipper, external placket to protect the zipper from clogging Very high and wide collar. The hood is adjustable in three dimensions, the shape is comfortable when shooting, does not obstruct the view Velcro on the chest for attaching name tapes Cuffs with velcro patches On the elbows, reinforcement from Supplex fabric (100% nylon) to protect against abrasion, removable anatomically shaped impact protection insert is included polyurethane foam Pockets: on the chest Napoleon pockets with zippers four front patch pockets with buttons. Large volume, bend of the entrance to protect against the loss of small items. Internal organization (plastic half rings, voluminous pockets made of fabric with a rubberized entrance) two side lower pockets of large volume, without bending the entrance (to facilitate access to contents) sleeve pockets - voluminous, with a vertical zipper, Velcro on top for attaching chevrons two internal pockets on a vertical zippers Drawstrings: internal tightening of the waist and bottom with an elastic cord, the excess ends of the cord are passed through special loops so as not to interfere Material: NYCO Rip-stop, 50% cotton, 50% nylon Reinforcement -100% nylon fabric Nylon Supplex rip-stop TEM- 500 wr. Light, not rustling, breathable and very durable for its weight Product weight: 46/170 size -1254 g 50/170 size -1358 g 54/182 size -1362 g 56-58/182 size -1389 g SIZE SELECTION: Download the Size Chart (.xlsx) to accurately determine the required size REVIEWS: Review from Green "a and Olga MAYBE YOU ARE INTERESTED IN:

Monochromatic jackets are recommended as a set for the summer uniform "Guard" M4, M5 or M12 in the off-season. Pockets: 2 capacious external pockets and 2 internal 1 with a zipper with a section for a fountain pen on the left sleeve Material: Twill (Twill) -100% polyester with PU coating Insulation: Sintepon 150 g/m 2 Product weight: 44-46/170-176 size -631 g 48-50/170-176 size -662 g 52-54/182-188 size -689 g from a glider soaring in the sky - you will not pass by this model. Flight jackets, which were supposed to combine functionality with simplicity, are reflected in this lightweight and practical urban jacket. The shortened demi-season jacket "Pilot" does not hinder movements and is convenient for a bicycle, scooter or motorcycle. Thanks to the durable, water-repellent, wrinkle-resistant material (Twill (100% polyester with PU coating)) and synthetic insulation padding polyester (150 g/m 2), of which the jacket is made, the Pilot easily resists bad weather, is quickly cleaned and retains its original appearance for a long time. Elastic ribbing at the collar, cuffs and waist provides soft yet secure wind protection. The powerful metal front zipper with internal wind flap makes a statement of reliability. Volumetric side pockets will allow you to place everything you need and will not let your hands freeze, and for the safety of small items, the jacket is supplemented with two inner pockets and a pocket on the sleeve. Monochromatic jackets are recommended in the set for the summer uniform "Guard" in the off-season. On the camouflage version, you can use false epaulettes. We strongly recommend using front loading washing machines, but if you have a top loading washing machine, it is recommended to wash your clothes and equipment in a special mesh laundry bag to protect against possible damage from parts of the washing machine drum. Close all zippers and velcro fasteners and fully loosen all adjustments before washing. If the upper fabric is membrane, then it is better to wash the product with the lining out (turned inside out). Wash on a delicate cycle at 30°C with a double rinse cycle (it is better to use two rinse cycles to ensure that all detergent residues are removed from the fabric and insulation) and spin at medium speed. It is acceptable to use a tumble dryer at medium temperature (40-60°C) for 30-40 minutes or until completely dry, if the top fabric is membrane, it is better to dry the product with the lining out (turned inside out). You can dry the product in a suspended state with the lining out. For stubborn stains, before washing, treat stains with a special product such as Grangers Performance Wash or Nikwax Tech Wash, allowing the detergent to soak in for 10-15 minutes. It is better to store clothes and equipment with synthetic insulation in a straightened (not compressed) state. How to restore the DWR treatment on insulated clothing or equipment DWR is a special polymer applied to the surface of the fabric to make it water-repellent. DWR processing is not forever. During the operation of the product, as well as after a certain number of washes, the effectiveness of DWR decreases. If water droplets have stopped rolling off the surface of the fabric and wet the fabric even after washing, it's time to restore the splash-proof treatment. We recommend the use of specific fabric re-spray formulations, either sprayed or poured into the washing machine, such as Grangers Clothing Repel or Performance Repel, or Nikwax TX.Direct Wash-In or Spray-On. First wash the product according to the washing instructions, then use the selected composition to restore the splash-proof treatment by spraying it directly on the front of the product while it is still damp, or by running a second wash cycle, pre-filling required amount wash-in composition into the washing machine. The manufacturer's instructions for the restoration of the splashproof treatment on the packaging must be followed exactly. Many DWR recovery products require heat activation, so it is best to tumble dry treated clothing and equipment or drying cabinet at medium temperature (40-60°C) for 40-50 minutes or until completely dry.

Reliable demi-season boots with a khaki velor upper, in which the soft edge of the beret is made of durable nylon fabric with a density of 1000D, are in high demand among young men who lead an active lifestyle. Additional comfort is provided by a 3D nylon mesh lining. The undoubted advantages of this model are that the front of the boot is protected from mechanical damage and moisture by a Matrix leather overlay, and a deaf valve will not allow foreign objects to penetrate into the boot. The toe and heel of the boot are reinforced with a special thermoplastic material to keep their shape. It is possible to use a special water-repellent impregnation, which will further increase the performance of the boots in difficult weather conditions. The high lacing system allows you to securely fix the model on the leg, which is very important when walking on rough terrain. ATTACK BOOTS OF URBAN TYPE Combined top: velor (1.3-1.5 mm) + 100% cotton (density 350g/m2). Lining: laminated mesh. Sole: rubber of increased wear resistance (Italy), BUTEK 1. Sole fastening method: adhesive. Supinator: metal. Toe cap and heel counter: Reinforced thermoplastic material. Sizes: 40-46. Semi-deaf valve. Soft edge. Color: olive. The toe and heel part are reinforced with leather with high-strength PU coating "Matrix" (Italy). Weight: 610 gr. Specifications Assault boots. Model Mongoose 24041 Producer BUTEX Country Belarus Top material velor (1.3-1.5 mm) + high-strength nylon fabric 1000D Lining material laminated mesh Sole fastening adhesive Metal arch support Toe and heel reinforced from thermoplastic material Sole material rubber of increased wear resistance BUTEK 1, (Italy) Available size row 40-46 Shoe color olive Valve type semi-blind valve Soft edging present Protection with overlays made of high-strength Matrix leather with PU coating (Italy). toe + heel

Monochromatic jackets are recommended as a set for the summer uniform "Guard" M4, M5 or M12 in the off-season Elastic knitted p / w elastic band on the cuffs and waist for comfort Metal frontal "zipper" with an internal windproof valve The site presents a camouflage version of this jacket, which allows the use of false epaulettes Pockets: 2 capacious external pockets and 1 internal 1 with a zipper with a section for a fountain pen on the left sleeve Material: Twill (Twill) -100% polyester with PU coating Insulation: Sintepon 150 g/m 2 Product weight: 44-46/170-176 size -611 g 48-50/170-176 size -721 g 52-54/182-188 size -741 g from a glider soaring in the sky - you will not pass by this model. Flight jackets, which were supposed to combine functionality with simplicity, are reflected in this lightweight and practical urban jacket. The shortened demi-season jacket "Navigator" does not hinder movements and is convenient for a bicycle, scooter or motorcycle. The Navigator differs from the "Pilot" jacket only by the presence of a false collar. Thanks to the durable, water-repellent, wrinkle-resistant material (Twill (100% polyester with PU coating)) and synthetic insulation padding polyester (150 g/m 2), of which the jacket is made, the "Shturman" easily resists bad weather, is quickly cleaned and retains its original appearance for a long time. Elastic ribbing at the cuffs and waist provides soft yet secure wind protection. The powerful metal front zipper with internal wind flap inspires confidence. Volumetric side pockets will allow you to place everything you need and will not let your hands freeze, and for the absolute safety of valuable items, the jacket is complemented by two inner pockets and a pocket on the sleeve. Monochromatic jackets are recommended in the set for the summer uniform "Guard" in the off-season. On the camouflage version, you can use false epaulettes. We strongly recommend using front loading washing machines, but if you have a top loading washing machine, it is recommended to wash your clothes and equipment in a special mesh laundry bag to protect against possible damage from parts of the washing machine drum. Close all zippers and velcro fasteners and fully loosen all adjustments before washing. If the upper fabric is membrane, then it is better to wash the product with the lining out (turned inside out). Wash on a delicate cycle at 30°C with a double rinse cycle (it is better to use two rinse cycles to ensure that all detergent residues are removed from the fabric and insulation) and spin at medium speed. It is acceptable to use a tumble dryer at medium temperature (40-60°C) for 30-40 minutes or until completely dry, if the top fabric is membrane, it is better to dry the product with the lining out (turned inside out). You can dry the product in a suspended state with the lining out. For stubborn stains, before washing, treat stains with a special product such as Grangers Performance Wash or Nikwax Tech Wash, allowing the detergent to soak in for 10-15 minutes. It is better to store clothes and equipment with synthetic insulation in a straightened (not compressed) state. How to restore the DWR treatment on insulated clothing or equipment DWR is a special polymer applied to the surface of the fabric to make it water-repellent. DWR processing is not forever. During the operation of the product, as well as after a certain number of washes, the effectiveness of DWR decreases. If water droplets have stopped rolling off the surface of the fabric and wet the fabric even after washing, it's time to restore the splash-proof treatment. We recommend the use of specific fabric re-spray formulations, either sprayed or poured into the washing machine, such as Grangers Clothing Repel or Performance Repel, or Nikwax TX.Direct Wash-In or Spray-On. First wash the product according to the washing instructions, then use the selected composition to restore the splash protection by spraying it directly on the front of the product while it is still damp, or running a second wash cycle, first pouring the required amount of wash-in into the washing machine . The manufacturer's instructions for the restoration of the splashproof treatment on the packaging must be followed exactly. Many DWR reconditioning products require heat activation, so it is best to dry treated clothing and equipment in a tumble dryer or dryer at medium temperature (40-60°C) for 40-50 minutes or until completely dry.

Lightweight boots are made of full grain leather. Valve and edge claim. leather. Even with tight lacing, movement over long distances will be easy and comfortable. The polyurethane sole is stable on various surfaces, whether it is wet grass in the forest or smooth stones in the mountains, they are not afraid of temperature changes and perform well in winter conditions. Sizes: 40-46 Height of berets -24.5 cm. Gender: male Season: winter Main color: black Top material: natural front chrome leather, artificial leather tongue Lining material: natural wool (70% wool, 30% PE) Bottom part material: thermoplastic elastomer TEP (Cross) Sole attachment method: gluing Shoe type: berets 41 42 43 44 45 46 47 48 EUR 36 37 38 39 40 41 42 43 44 45 46 47 48 49 UK 3.5 4 5 6 6.5 7.5 8 9 9.5 10.5 11.5 12 13 13.5 Find your size on the following chart: blank sheet of paper. Mark the extreme borders of the foot. Measure the distance between the outermost points of the foot. Find the appropriate size in the table above.

Versatile all-weather boots for light trekking and the city Upper material - genuine leather (t. 2.0 mm) with PU coating + Cordura ®. Easy to care for and resistant to wear Lining - practical synthetic material on the Dintex® membrane. Well removes excess moisture from the foot and retains heat Replaceable molded insole. High wear resistance Durable nylon lacing ensures a snug and comfortable fit Two-component outsole (heat-resistant rubber + EVA) - well cushioned and non-slip The toe part of the boot has a rubber pad that provides additional protection against mechanical impacts when walking Multi-directional tread ensures optimal grip surface Stainless fittings Red disheveled sun, yawning, crawls out from behind distant ridges, peers at itself in every puddle, rings a drop and draws us into the feast of light and air. I want to forget about the backpack that pulls my shoulders, breathe in deeply and look around, and not under my feet. The road is far from easy… it lulls vigilance, unfolding like a fluffy carpet, and suddenly capriciously bending, throws up obstacles and traps. It's good that trekking boots have already been invented! Boots THB "Berg" fix the foot, protect the legs from stones and shocks, "keep" on the terrain, do not get wet and remove excess moisture from the inside. Stability on difficult terrain, the necessary rigidity and elasticity of the boot is provided by a two-component sole (heat-resistant rubber + EVA). EVA (Ethylene Vinyl Acetate) is a lightweight and resilient material similar to foam rubber with excellent cushioning properties. Possesses low heat emission, does not absorb moisture, keeps flexibility at low temperatures. Thanks to the foamed structure of the EVA sole, the shoes spring well, easily restore their shape in case of reverse deformation, retain heat, and do not let the cold through. A durable rubber outsole with a deep multi-directional tread provides reliable traction on various grounds in any weather. The upper combines PU-coated genuine leather with durable, lightweight Cordura® synthetic material to reduce the boot's weight and improve breathability and durability. The lining is a practical synthetic quick-drying material on the Dintex® membrane. Breathable, well removes excess moisture from the foot and maintains a comfortable temperature in the boot, protecting the feet from hypothermia. Removable molded anatomical insole with high wear resistance and antibacterial properties, supports the arch of the foot and provides ventilation. The heel counter supports the ankle, strong nylon lacing tightly fixes the leg, and the rubber pad in the toe part of the boot protects the toes from impact and increases the grip area with the rocky terrain. Light comfortable boots will make your journey shorter, just be careful and take your time while trying on. In order to make it easier for you to "feel" the shoes, in our stores there are simulators of complex relief Characteristics: Weight: 550 g (1/2 pair 42 size) Size range: 41-46

ASSAULT BOOTS OF THE URBAN TYPE Upper: hydrophobic leather (1.2-1.4 mm), “DRYWALKSYSTEM” (R) (CJSC “RUSSIAN KOZHA”) Lining: printed wool fur (merino). Sole: 2-layer (rubber + PU), BUTEK 3. Sole attachment method: adhesive. Toe cap and heel counter: Reinforced thermoplastic material. Sizes: 40-46. The deaf valve protects a foot from influence of environment (dust, dirt). Speed ​​lacing. Black color. The toe part is reinforced with leather with high-strength PU coating "Matrix", (Italy). Weight: 600 gr. Specifications Assault boots. Model Cobra 12034 Producer BUTEKS Country Belarus Top material hydrophobic leather (1.2-1.4 mm), DRYWALK SYSTEM® (CJSC RUSSIAN KOZHA) Lining material printed woolen fur (merino) Sole fastening glued Instep support metal Toe and heel reinforced from thermoplastic material Sole material 2-layer: rubber + PU BUTEK 3, (Italy) Available size range 40-46 Shoe color black ). toe

Trousers "Mountain-3" are recommended for outdoor activities (tourism, hiking), as well as as a field uniform for mountain rifle units of the Russian Ministry of Defense Loose fit that does not restrict movements Loops for a wide waist belt seat, knees and on the bottom of the trousers The knees are protected by a removable polyurethane foam insert (included in the kit), it is possible to use additional knee pads. The latest version of the trousers is compatible with D3O T5 and T6 knee pads (sold separately!) Leg volume can be adjusted in the calf area with a hidden Velcro elastic band Dust muffs with elasticated volume adjustment, equipped with an elastic drawstring Comes with detachable side suspenders, easy to unfasten when the jacket is on , slightly adjustable in height Pockets: two side welt pockets two back patch pockets with buttons two side bulky cargo pockets closed with button flaps Material: Main material -100% cotton significantly improve the fabric's resistance to fading and abrasion Reinforcing overlays -100% polyester rip-stop Attention! Before washing, remove the protective inserts in the knee/elbow pads from their respective pockets. Do not wash protective inserts in the washing machine. When washing tarpaulin products in a washing machine, traces of abrasion may appear. YOU MAY BE INTERESTED IN: REVIEWS: Review by Survival Panda Review by Vladislav Boychuk (tankist_sssr)

On camouflage jackets, you can use false epaulettes. sleeve Material: Top material 45-P Shadow Alpha Industries - Splav: 100% nylon Twill (Twill) -100% polyester with PU coating 611 g 48-50/170-176 size -721 g 52-54/182-188 size -741 g Additional discounts do not apply to products with a red price loading, but if you are the owner of a top-loading machine, it is recommended to wash clothes and equipment in a special mesh laundry bag to protect against possible damage by parts of the washing machine drum. Close all zippers and velcro fasteners and fully loosen all adjustments before washing. If the upper fabric is membrane, then it is better to wash the product with the lining out (turned inside out). Wash on a delicate cycle at 30°C with a double rinse cycle (it is better to use two rinse cycles to ensure that all detergent residues are removed from the fabric and insulation) and spin at medium speed. It is acceptable to use a tumble dryer at medium temperature (40-60°C) for 30-40 minutes or until completely dry, if the top fabric is membrane, it is better to dry the product with the lining out (turned inside out). You can dry the product in a suspended state with the lining out. For stubborn stains, before washing, treat stains with a special product such as Grangers Performance Wash or Nikwax Tech Wash, allowing the detergent to soak in for 10-15 minutes. It is better to store clothes and equipment with synthetic insulation in a straightened (not compressed) state. How to restore the DWR treatment on insulated clothing or equipment DWR is a special polymer applied to the surface of the fabric to make it water-repellent. DWR processing is not forever. During the operation of the product, as well as after a certain number of washes, the effectiveness of DWR decreases. If water droplets have stopped rolling off the surface of the fabric and wet the fabric even after washing, it's time to restore the splash-proof treatment. We recommend the use of specific fabric re-spray formulations, either sprayed or poured into the washing machine, such as Grangers Clothing Repel or Performance Repel, or Nikwax TX.Direct Wash-In or Spray-On. First wash the product according to the washing instructions, then use the selected composition to restore the splash protection by spraying it directly on the front of the product while it is still damp, or running a second wash cycle, first pouring the required amount of wash-in into the washing machine . The manufacturer's instructions for the restoration of the splashproof treatment on the packaging must be followed exactly. Many DWR reconditioning products require heat activation, so it is best to dry treated clothing and equipment in a tumble dryer or dryer at medium temperature (40-60°C) for 40-50 minutes or until completely dry.

Lightweight boots made from the softest leather. On the beret, "tongue" and valve, modern eco-leather is placed, which has all the characteristics of genuine leather: breathable properties, reliability in operation. Even with tight lacing, movement over long distances will be easy and comfortable. The polyurethane sole is stable on various surfaces, whether it is wet grass in the forest or smooth stones in the mountains, they are not afraid of temperature changes, they perform well on hot asphalt. Sizes: 39-45 Berets height -24.5 cm Gender: male Season: summer Main color: black Upper material: natural front chrome leather, artificial leather tongue Lining material: non-woven material, abrasion-resistant and quick-drying, high density (only on the vamp and back) Material of the bottom part: polyurethane Method of attaching the sole: bead stitching Type of shoes: berets Size chart cm 38 39 40 41 42 43 44 45 46 47 48 EUR 36 37 38 39 40 41 42 43 44 45 46 47 48 49 UK 3.5 4 5 6 6.5 7.5 8 9 9.5 10.5 11.5 12 13 13.5 Determine your size using the following chart Place your foot on a blank piece of paper. Mark the extreme borders of the foot. Measure the distance between the outermost points of the foot. Find the appropriate size in the table above.

The jacket is oversized! If you wear 50 r you need to take 48 !!! Jacket from a winter field suit for servicemen of the Armed Forces of the Russian Federation of the sample of 2010. It differs from the original in external wind and moisture protection fabric, lightweight non-removable insulation and a more convenient central fastener. External fabric - Oxford PU (100% nylon). Unlike the mixed fabric of the original, it does not get wet, protects from the wind and has high strength. Lightweight synthetic fabric lining Central zip fastening, covered with a placket on the outside with buttons (buttons in the original). It protects better from cold and wind, it is more convenient to work even with warm gloves For simplicity and convenience, the insulation (synthetic winterizer) is made non-removable. The amount of insulation is less than in the original, the jacket is more demi-season for its intended purpose. Reinforcement of the elbows with overlays from the second layer of fabric. False epaulettes included High wide collar lined with fleece. It fastens with Velcro. The hood is insulated with a layer of fleece and stows away in the collar. Stretches around the face, and in two dimensions at the back of the head. Fastens at the front with Velcro Waist is tightened with an elastic cord with two clamps on the inside of the jacket. Slanted entry at a comfortable angle, fleece-lined inner document pocket with velcro flap (heart side), made of waterproof fabric washing clothes and equipment in a special mesh laundry bag to protect against possible damage by parts of the washing machine drum. Close all zippers and velcro fasteners and fully loosen all adjustments before washing. If the upper fabric is membrane, then it is better to wash the product with the lining out (turned inside out). Wash on a delicate cycle at 30°C with a double rinse cycle (it is better to use two rinse cycles to ensure that all detergent residues are removed from the fabric and insulation) and spin at medium speed. It is acceptable to use a tumble dryer at medium temperature (40-60°C) for 30-40 minutes or until completely dry, if the top fabric is membrane, it is better to dry the product with the lining out (turned inside out). You can dry the product in a suspended state with the lining out. For stubborn stains, before washing, treat stains with a special product such as Grangers Performance Wash or Nikwax Tech Wash, allowing the detergent to soak in for 10-15 minutes. It is better to store clothes and equipment with synthetic insulation in a straightened (not compressed) state. How to restore the DWR treatment on insulated clothing or equipment DWR is a special polymer applied to the surface of the fabric to make it water-repellent. DWR processing is not forever. During the operation of the product, as well as after a certain number of washes, the effectiveness of DWR decreases. If water droplets have stopped rolling off the surface of the fabric and wet the fabric even after washing, it's time to restore the splash-proof treatment. We recommend the use of specific fabric re-spray formulations, either sprayed or poured into the washing machine, such as Grangers Clothing Repel or Performance Repel, or Nikwax TX.Direct Wash-In or Spray-On. First wash the product according to the washing instructions, then use the selected composition to restore the splash protection by spraying it directly on the front of the product while it is still damp, or running a second wash cycle, first pouring the required amount of wash-in into the washing machine . The manufacturer's instructions for the restoration of the splashproof treatment on the packaging must be followed exactly. Many DWR reconditioning products require heat activation, so it is best to dry treated clothing and equipment in a tumble dryer or dryer at medium temperature (40-60°C) for 40-50 minutes or until completely dry.

Straight silhouette, length to the middle of the thigh Hood with a detachable edging, adjustable in volume and oval of the face Insulated with two layers of synthetic winterizer, which is 270 g/m or washable) Front zipper with two locks, unzips both from the top and bottom of the jacket Windproof inner and outer flaps covering the front "lightning"; edging on the hood; high collar and bottom of the sleeves, adjustable in size with Velcro with an internal knitted cuff, prevent the penetration of cold under clothing two inside pockets four pockets at the bottom of the jacket Drawstrings: along the waist and bottom of the jacket Material: 100% Polyamide with PU coating Product weight: 46/176 size -1140 g 50/176 size -1207 g 54/182 size - 1302 g 58/188 size -1430 g Designed as a combat jacket, which meant serious checks and tests, having survived outbursts of popular worship and periods of cooling, it returned to us calm and confident in its reliability, functionality and durability. Warm, durable, windproof and water repellent, thanks to the fabric used in the manufacture (100% polyamide with PU coating), "Alaska" provides complete protection from snow, wind, moisture and cold. Insulation - two layers of synthetic fiber synthetic winterizer (270 g / m 2), which, unlike down, does not absorb moisture and is not afraid of frequent washing. The polyester lining is quilted along with it, which increases the life of the jacket (the padding polyester stays in place when dry-cleaning or washing). Unlike expensive membrane fabrics and down insulation, these materials do not require special personal care and do not raise the price of the jacket to exorbitant heights. The hood, characteristic of Alaska, with fur trim, in combination with a high collar, covers almost the entire face, if necessary, and is adjustable in volume and oval of the face. The edge, made of natural or artificial fur (of your choice), can be unfastened from the hood. The inside of the collar and the edge of the hood that touches the face are lined with soft fleece. Serious barriers to wind and cold are also the windproof outer and inner flaps of the front two-way zipper, the belt and the bottom of the jacket that are pulled down with a cord. Sleeves with internal knitted cuffs are regulated by armor on "flypaper". The length of the jacket (to the middle of the thigh) allows you to stay in the cold for a long time, and the free silhouette does not restrict movement. Large buttons allow you to unbutton the jacket without taking off your gloves. The voluminous, warm front pockets are trimmed inside with soft jersey fabric, and the large buttons on the upper pockets allow you to unbutton them with gloves. In addition to the six front pockets, there are two more pockets on the sleeve and two inside. Warm comfortable jacket designed for long stays in the cold. We strongly recommend using front loading washing machines, but if you have a top loading washing machine, it is recommended to wash your clothes and equipment in a special mesh laundry bag to protect against possible damage from parts of the washing machine drum. Close all zippers and velcro fasteners and fully loosen all adjustments before washing. If the upper fabric is membrane, then it is better to wash the product with the lining out (turned inside out). Wash on a delicate cycle at 30°C with a double rinse cycle (it is better to use two rinse cycles to ensure that all detergent residues are removed from the fabric and insulation) and spin at medium speed. It is acceptable to use a tumble dryer at medium temperature (40-60°C) for 30-40 minutes or until completely dry, if the top fabric is membrane, it is better to dry the product with the lining out (turned inside out). You can dry the product in a suspended state with the lining out. For stubborn stains, before washing, treat stains with a special product such as Grangers Performance Wash or Nikwax Tech Wash, allowing the detergent to soak in for 10-15 minutes. It is better to store clothes and equipment with synthetic insulation in a straightened (not compressed) state. How to restore the DWR treatment on insulated clothing or equipment DWR is a special polymer applied to the surface of the fabric to make it water-repellent. DWR processing is not forever. During the operation of the product, as well as after a certain number of washes, the effectiveness of DWR decreases. If water droplets have stopped rolling off the surface of the fabric and wet the fabric even after washing, it's time to restore the splash-proof treatment. We recommend the use of specialized fabric re-splash treatments, sprayed or poured into the washing machine, such as Grangers Clothing Repel or Performance Repel, or Nikwax TX. Direct Wash-In or Spray-On. First wash the product according to the washing instructions, then use the selected composition to restore the splash protection by spraying it directly on the front of the product while it is still damp, or running a second wash cycle, first pouring the required amount of wash-in into the washing machine . The manufacturer's instructions for the restoration of the splashproof treatment on the packaging must be followed exactly. Many DWR reconditioning products require heat activation, so it is best to dry treated clothing and equipment in a tumble dryer or dryer at medium temperature (40-60°C) for 40-50 minutes or until completely dry.

Warm and durable winter jacket. The most popular model. The site presents a camouflage version of this jacket. False epaulettes can be used Quilted polyester lining with padding polyester, which increases the service life of clothes (padding stays in place when dry-cleaning or washing) Frontal zipper with two locks, unzips both at the top and bottom of the jacket Pleats on the back for extra freedom of movement Windproof valve that covers the front zipper, knitted cuffs inside the sleeves prevent the penetration of cold under clothing It is possible to complete the jacket with a hood, collar and liner Stainless buttons are used Pockets: 2 chest pockets and 2 at the bottom of the jacket 1 inner pocket Drawstrings: cord for tightening the belt and the bottom of the jacket Material: Oxford ( Oxford) -100% nylon with PU coating "Tourist" -100% polyacryl with polyamide coating Insulation: Sintepon 300 g/m2

Lightweight boots are made of full grain leather combined with waterproof Cordura fabric. "Tongue", flap and back made of eco-leather: modern material having all the properties of natural leather. Even with tight lacing, movement over long distances will be easy and comfortable. The polyurethane sole is stable on various surfaces, whether it is wet grass in the forest or smooth stones in the mountains, they are not afraid of temperature changes, they perform well on hot asphalt. Sizes: 39-45 The height of the berets is 24.5 cm. Gender: male Season: summer Upper material: genuine leather + Cordura (black), artificial leather tongue Lining material: unlined Bottom material: polyurethane Sole attachment method: stitched Type of shoes: berets Size chart cm 22.5 23 23.5 24.5 25 25.5 26.5 27 27.5 28.5 29 29.5 30.5 31 40 41 42 43 44 45 46 47 48 49 UK 3.5 4 5 6 6.5 7.5 8 9 9.5 10.5 11.5 12 13 13.5 Finding your size Determine your size as follows: Place your foot on a clean sheet of paper. Mark the extreme borders of the foot. Measure the distance between the outermost points of the foot. Find the appropriate size in the table above.

Fully camouflaged version of the "Mountain 3" trousers, made from the same materials (new high-quality canvas and 100% rip-stop polyester reinforcements). Before washing, remove the protective inserts in the knee/elbow pads from their respective pockets. Do not wash protective inserts in the washing machine. When washing tarpaulin products in a washing machine, traces of abrasion may appear. YOU MAY BE INTERESTED IN: REVIEWS: Review by Vladislav Boychuk (tankist_sssr)

Warm and durable winter jacket. The most popular model. The site presents a single-color version of this jacket. False epaulettes can be used Quilted polyester lining with padding polyester, which increases the service life of clothes (padding stays in place when dry-cleaning or washing) Frontal zipper with two locks, unzips both at the top and bottom of the jacket Pleats on the back for extra freedom of movement Windproof valve , covering the front zipper, knitted cuffs inside the sleeves prevent the penetration of cold under clothing Stainless buttons are used It is possible to complete the jacket with a hood, collar and lining Pockets: 2 chest pockets, 2 at the bottom of the jacket and 1 inside Drawstrings: cord for tightening the belt and bottom of the jacket Material: Oxford ) -100% nylon with PU coating Insulation: Synthetic winterizer 300 g/m 2 SIZE FINDING: Download

The development of modern science does not stand still. Together with it, as already known materials are improved, so new ones appear. The basis, as a rule, without ...

Polyurethane. What is this material, its properties and applications

By Masterweb

The development of modern science does not stand still. Together with it, as already known materials are improved, so new ones appear. As a rule, synthetic polymers, such as polyurethane material, are taken as the basis. What kind of substances they are and what application they have found in all spheres of life and production, we will find out a little later. Physical and technological characteristics make it possible to use them even in the most critical industries: mechanical engineering, the manufacture of insulators and fasteners. It's simply impossible to imagine without them. everyday life person.

For a step forward

Despite constant development, the urgent need for new quality materials remains very high. Modern life requires a huge variety of different substances: plastic and solid, stretchable and durable. They must withstand stress, temperature extremes, aggressive operation.

This need is forcing scientists to experiment with the synthesis of polymeric compounds, with the compatibility of inorganic and organic components in an attempt to obtain more versatile compounds. Polyurethane is such a polymer. It has a whole set of unique properties that have made it one of the most actively used in almost all spheres of life and production.

What is this material: polyurethane?

First, it is worth understanding in more detail the substance itself and why it is called thermoplastic.

This polymer compound combines the hardness of durable plastic with the ductility of natural rubber. It appeared only in the middle of the last century, thanks to the efforts of scientists from the United States who were able to synthesize it. The physical characteristics of this material are directly dependent on the main component.

Basic raw material

There are several types of raw materials from which polyurethane material is produced for the sole. These are simple and complex polyesters, as well as aliphatic isocyanate.

Now that we know what kind of material it is - polyurethane, we need to figure out its possible compositions.

If a polyether (propylene and ethylene oxide, isoprene) has a larger percentage in the basis of a substance, then the final substance becomes more resistant to the hydrolysis process, and also receives increased frost-resistant and wear-resistant characteristics.

Polyester bases (linear products of phthalic acid) give the final substance the following features:

• increase in tensile strength;
• increased wear resistance;
• the ability to restore the original shape.

For wheels, the polyurethane material based on the latter component receives increased UV resistance and ductility, even at sub-zero temperatures.

The main method for obtaining this substance is casting from granulate. The final elastomer can be in two states: viscous liquid and solid. Solids can be both crystalline and amorphous (i.e., have only a short-range order of atomic structure).

Glycols, water, glycerol ether or castor oil are used to lengthen and structure the chains. These reagents set the molecular weight for linear polyurethanes.

The catalyst for the formation of polyurethane can be tertiary amines, compounds of beryllium, iron, vanadium or copper, as well as lead or tin naphthenates.

The main feature of the substance

Finished products made from polyurethane material (insoles, for example) have different final properties, which may vary for each application. Key Features- the ability to set and adjust the necessary parameters at the initial stage of obtaining the material. This contributes to the ever-increasing expansion of the scope of its use.

If you do not pay attention to the predominant component that underlies thermoplastic polyurethane, then the resulting material also has a whole set of common properties.

Key Features

Firstly, this substance has stamina and endurance and keeps its shape well. Secondly, its high strength under various deformations, such as stretching or bending, allows it to become indispensable in industries where the plasticity of the material comes to the fore. Thirdly, a good level of noise and vibration absorption makes polyurethane popular, for example, in mechanical engineering.

In addition, the substance can be subjected to coloring, which does not affect the wear resistance parameters, since the paint is applied not only to the top layer, but paints over the entire volume.

The temperature range of application of this elastomer ranges from -60 to +80 degrees Celsius.

Polyurethane, as a shoe sole material, is resistant to fats, microbes, bacteria, temperature extremes, sea ​​water, aging, mechanical stress. To increase the overall strength of the material, it can be coated with a layer of reinforced fiberglass. Solutions of polyurethane in organic solvents are converted into various types of high-strength adhesives.

And one very nice bonus: this substance can be recycled.

Application industries

The main areas of use for thermoplastic polyurethane are:

• Automotive industry;
• production of consumer goods;
• footwear industry;
• production of sporting goods;
• cable production.

In the automobile and mechanical engineering industry, this substance is used for the production of handles, shock-absorbing chassis mounts, mats, springs, visors, various toggle switches and switches, insulators. In some cases, decorative parts of the car interior are made from it.

In the areas of public consumption, soles, insoles and other similar components of shoes, tips for umbrellas and so on are made from it.

Polyurethane in the footwear industry

Polyurethane found its main use in everyday life in the shoe industry. Due to its basic qualities (frost resistance, elasticity, strength, durability and resistance to constant mechanical stress), it makes excellent soles, especially for winter views shoes. The ergonomics of this polymer is high along with antiseptic properties, which allows it to be used for the manufacture of insoles.

The production of goods for recreation and sports also cannot do without polyurethane. It is used to make wheels for roller skates, sports tires, bushings and gaskets, tips for skis, special sports boots for snowboarding and speed skating, wheels for skateboards, connecting elements and various fasteners.

Brief summary

Now that we know what kind of material it is - polyurethane, it's worth summing up. So, this elastomer is one of the most commonly used compounds. It is distinguished by a number of excellent technological, physical, chemical and structural characteristics, which ensure its use in a variety of industries and industries.

All these characteristics make the material cost-effective for mass production. At the same time, the costs of this process are quite modest both financially and in terms of time costs.

As a lining material, polyurethane is used for winding power cables and decorative elements of car interiors, for roller skates and insoles. The ability to set the necessary characteristics at the manufacturing stage allows you to expand the scope of this polymer and makes them almost limitless.

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Polyurethane

Polyurethane unique properties of a synthetic polymer, produced from petroleum products. Different ratios of components (the content of catalysts, blowing agents and stabilizers) regulate properties, the range is the widest: from liquids, viscous compounds to elastic rubbers and the strongest plastics. Containing polyurethane fabric It is made with use of threads - elastomers. With special strength, high tensile strength, elasticity, and excellent dielectric characteristics, highly tensile polyurethane fibers are most in demand in the textile industry.

The use of this kind of thread in interior textiles seems absurd only at first glance. In fact, with the help of an inconspicuous highly stretchable elastomer thread, a spectacular one can be sewn (a drawstring is sewn from the inside along the intended contour, an elastic thread or braid threaded into it forms a drapery pattern after tightening). The same technique can be used in decorating a successful design can be seen in the gallery of ready-made kits. Austrian curtains, with spectacular draperies of wide scallops, are made according to the same type; instead of elastic braid, a system of cords is used from the inside of the model. Furniture covers or are sewn using more dense and dimensionally stable fittings designed for high-density massive fabrics.

Polyurethane

The range of polyurethane threads is numerous, determined by the purpose. Some types are produced intertwined with a thread of a different composition (,), some are used as auxiliary ones. Textiles developed on the basis of elastic fibers (knitwear and fabrics with different properties) are indispensable in the production of immobilizing dressings, sportswear tight-fitting silhouette, swimwear. Elastomeric polyurethane fibers ("spandex", "", "neolan", "vayrin", "elastane") are known to admirers of tight-fitting clothing. Polyurethane elastomers are resistant to microorganisms and mold, do not change their properties in wet conditions.

The use in various fields of industry as a structural material intended for work under conditions of intense mechanical loads (steel bending or cold rolling shafts) is due to the strength, vibration resistance and hardness of cast polyurethanes of the NITs PU - 5 type. The most durable elastic ones are used in the production of drive belts, tires , conveyor belts, various sealants. An example containing polyurethane fabric maybe high-tech artificial leather (used for accessories for curtains, sewing covers, furniture upholstery). Effective adhesives, varnishes, polyurethane foam, heat-insulating fillers contain polyurethane of a different chemical structure.

Thanks to the development of modern science, polymers, which are fundamentally distinguished by high consumer characteristics and unique properties, have become available. Today they are used in almost all areas of construction and human activity. The most common and widely used materials are polyurethanes, polyethylenes, and polystyrenes.

largest functionality has the first version of polymerized materials, which is also called " substance with unlimited possibilities". Depending on the area of ​​application, it can be very soft and elastic, or as strong and hard as possible. The uniqueness of the polymer lies in the fact that even at the stage of synthesis, knowing the correct proportions of additional components and additives, one can obtain a material with the desired properties.

AT recent times A new material has gained wide popularity - elastic polyurethane, which has all the useful properties of rubbers and rubbers, and due to its unique composition, surpasses all known elastomers.

History of occurrence

Elastic polyurethane - what is it? This is a special synthesized material obtained from artificial rubbers, which has elastic properties and high strength. They were first synthesized in 1937, and full-fledged production began only 20 years later.

An elastic polyurethane thread, which was synthesized and put into production in 1958 in the USA, has become widespread. The demand for the new material was so huge that within a few years it began to be produced by the world's largest countries - America, Japan, the USSR.

Elastic polymers in the form of filaments or fibers have many names depending on the manufacturer, composition and technical characteristics. "Lycra", "Elastane", "Spandex", "Linel", "Dorlastan" - all these are quite well-known names of elastic polyurethanes.

Elastic fibers from polyurethane can be obtained in four main ways:

• by extrusion from a molten liquid polymer;
• shaping with chemical active substances(reagents);
• dry molding;
• wet molding from solution.

Depending on the production method, the basic and parameters of elastic polyurethane fibers may differ slightly.

Main technical characteristics and properties

Regardless of the production method, all flexible polyurethanes have the following basic technological properties:

• high coefficient of mechanical strength;
• water resistance;
• elasticity and flexibility;
• environmental cleanliness and safety;
• practically not subject to shrinkage during operation.

In addition, the material quickly restores its primary shape after removing additional load from it and has high tensile strength (especially polyurethane threads and fibers).

These qualities are highly valued in various fields of production, which allowed flexible polyurethanes to become indispensable materials in many industries and human activities.

Liquid two-component polymer

Recently, liquid elastic polyurethane has become widely used - a separate type of polyurethane elastomers, from which molds and dies are obtained.

Polyurethane differs from other materials used in the manufacture of artistic decorative elements by its increased strength and resistance to temperatures. With proper preparation of the mixture and compliance with all proportions, the finished material can easily withstand temperatures up to 70-100 degrees without losing its basic qualities.
For the field of semi-industrial casting, the quality of the primary matrix and injection molds plays a special role. Derived from two-component polyurethane, the molds have a number of useful properties.

First of all, it is wear resistance. This indicator is very important in small-scale production, as it allows you to cast a certain number of sculptures, decorative or artistic elements, using only one mold.

The second quality indicator is tensile strength combined with high flexibility. The third key property of the material is the absence of shrinkage. Thanks to this quality, a large number of products can be obtained from polyurethane molds, which will be identical to the original sample (matrix).

These and other properties made it possible to produce various decorative finishing materials using injection molds, primarily, which is obtained from gypsum or cement with the addition of a special coloring pigment.

Particular attention should be paid to storage conditions for two-component liquid polyurethane. Containers with the substance must be tightly closed (ideally sealed), as the substance is subject to strong oxidation under the influence of oxygen. If stored incorrectly, the material will begin to foam spontaneously and its further use will no longer be possible.

You should also not experiment on your own with the proportions of the base substance and the catalyst (hardener). Regardless of the brand of polyurethane, all manufacturers give clear recommendations regarding the weight of all interacting components. By violating the proportion, you can get the final material with absolutely different properties than you would like.

Results

Elastic polyurethanes are widely used in various industries and in many areas of the national economy due to their qualities and characteristics.

Liquid two-component polyurethane is one of the few materials that has been successfully used in the mass flow production of materials for decorative finishes rooms made of plaster, cement or concrete.

Elastic fibers combined with other types of materials to obtain strong and wear-resistant threads that are used both for sewing sportswear and for high-strength polymer fabrics used in the military industry, and even for the production of special airless tires.