One of the applications in daily life is:
Furniture industry applications
1. paint, 2. coating, 3. adhesive, 4. sofa, 5. mattress. 6, 6. seat armrest
Household appliances
1. electrical insulation paint 2. wire and cable sheathing 3. refrigerators, freezers, sterilizers, water heaters, etc., insulation layer 4. waterproof potting adhesive for washing machine electronics
Construction applications
1. sealant, 2. adhesives, 3. waterproofing and insulation layer for the roof, 4. insulation of cold storage, 5. interior and exterior wall paint 6. Floor paint, 7. Synthetic wood, 8. Runway, 9. Waterproof plugging agent 10 Plastic floor
Transportation industry applications
1. Airplanes, automobile interior parts seats, armrests, headrests, inner door panels, dashboards, steering wheels, bumpers, shock absorbing pads, fenders 2. Carpet lining, paint 3. Thermal insulation parts, piping 4. Sealing gaskets 5. Anti-skid chains
Applications in shoe-making and tanning industry
1. shoe inner and outer soles 2. adhesives 3. leather finishing agents 4. artificial and synthetic leather coatings
Applications in the sports industry
Plastic sports grounds (including basketball, volleyball, badminton, tennis courts, and runway paving), sports apparel (dancewear, swimsuits, and dancewear); sports shoes and scooters
II, Specific applications of various polyurethane materials are:
1, PU flexible foam Flexible PU
Padding materials - such as seats, sofas, mattresses, etc., polyurethane flexible foam is a very ideal padding materials, padding materials is also the largest amount of flexible foam applications;
Sound-absorbing materials -open-cell polyurethane foam has a good sound-absorbing and shock-absorbing function, can be used as indoor sound insulation materials;
Textile composite materials - shoulder pads, bra sponges, cotton pads; toys
2, PU rigid PU
Polyurethane foam is a kind of soft foam, which can be used as a sound-absorbing material in the room.
Refrigeration equipment - such as refrigerators, freezers, cold storage, refrigerated trucks, etc., polyurethane rigid foam is the most ideal insulation material for refrigeration equipment;
Industrial equipment insulation - such as tanks, pipelines, etc.;
Construction materials - in Europe and the United States developed countries, polyurethane rigid foam for construction accounted for about 70% of the total consumption of rigid foam, which is more than double the amount of rigid foam used in refrigerators, freezers, etc.; in China, the application of rigid foam in the construction industry is not as common as that of the developed countries in the West, so there is a very large potential for development;
Transportation industry --such as automobile headliner, interior parts (steering wheel, instrument panel), etc.;
Wood imitation -- high-density (density 300~700kg/m3) polyurethane rigid foam or glass fiber reinforced rigid foam is structural foam, also known as wood imitation. It has the characteristics of high strength, good toughness, dense and tough crust, simple molding process, high production efficiency, high strength compared to natural wood, low density compared to natural wood, and can be used as a substitute for wood for all kinds of high-grade products.
Potting materials - such as waterproof grouting materials, leakage plugging materials, roof waterproofing materials
Flower industry - PU flower pots, flower arrangements, etc.
3, PU Semi-rigid PU
3, PU Semi-rigid PU <
Energy-absorbing foam - energy-absorbing foam has excellent shock absorption, cushioning performance, good compression load resistance and deformation recovery performance, its most typical application is used in the preparation of automobile bumpers;
Self-incorporated skin foam (Integral Skin Foam) --Used in the preparation of automobile steering wheels, armrests, headrests and other softened internal functional parts and interior trim. Integral Skin Foam products are usually processed by Reaction Injection Moulding (RIM);
Microcellular Elastomers - The most typical application of polyurethane microcellular elastomers is for the shoe industry.
4, polyurethane elastomers (PU Elastomers)
Pouring type polyurethane elastomers (referred to as CPU) - is the polyurethane elastomers in the widest range of applications, the largest production of a kind of;
Thermoplastic Polyurethane Elastomers (referred to as TPU) -- thermoplastic polyurethane elastomers account for about 25% of the total polyurethane elastomers;
Mixed polyurethane elastomers (abbreviated as MPU) -- account for about 10% of the total polyurethane elastomers.
Solid tires; printing and conveying rubber rollers; press rollers; oil seals, gaskets ball joints, bushings bearings; O-rings; spacer pads; shoe soles, back roots, wraps; linings; gears, etc., the hardness range of the elastomers selected for different applications is different.
Applications in mining, metallurgy and other industries - sieve plate, shaker, etc.
Applications in the machinery industry - rubber rollers, tapes, seals, etc.;
Applications in the automotive industry
Applications in light industry - polyurethane shoe soles, polyurethane synthetic leather, polyurethane fibers;
Applications in construction industry - waterproofing materials, paving materials, and polyurethane fibers;
Applications in construction industry - waterproofing materials, paving materials, and polyurethane fibers. -waterproofing materials, paving materials, potting materials, etc.
5, polyurethane shoe soles (Shoe Sole)
Polyurethane shoe soles have many advantages: low density, soft texture, comfortable and lightweight; good dimensional stability, long storage life; excellent wear resistance, flex resistance; excellent shock absorption, anti-skid performance; good temperature resistance; good chemical resistance and so on. Polyurethane is mostly used in the manufacture of high-grade leather shoes, sports shoes, travel shoes and so on.
6, polyurethane slurry
Divided into two categories of wet and dry, is a polymer solution system, transparent or slightly turbid appearance, the solids content of about (30-35)%, that is to say, (65-70)% of them are solvents, simply put, 1 ton of slurry contains (650-700) kg of solvents, for the dry method is so much toluene and butanone. Butanone, toluene dosage is larger, because the solubility of toluene is better, for the wet process is to contain 650-700 kilograms of pure DMF, so for the slurry, such as toluene, DMF price changes largely affect the cost of the slurry, for the simple reason that the dosage of the ratio of significant.
Polyurethane slurry is used as a coating to prepare polyurethane synthetic leather and artificial leather. Polyurethane synthetic leather has a soft, natural luster, soft touch, leather feel strong appearance, with excellent bonding performance with the substrate, wear resistance, flex resistance, anti-aging, good resistance to mold and other excellent mechanical properties, but also has a good cold resistance, breathable, washable, easy to process, inexpensive price, etc., is the most ideal alternative to natural leather, widely used in apparel, footwear, bags, furniture, Sports and other industries. Where the application of leather, it can be replaced, but also can be applied to leather can not be applied in the field of leather, leather market is easily affected by the animal (cattle, sheep, pigs, etc. market, mad cow disease).
Dry polyurethane slurry - in the process of application, by heating evaporation of the slurry in the solvent evaporated, the solvent is mostly used toluene, butanone, evaporated solvent can not be recycled, not only pollution of the environment, but also caused unnecessary waste.
Wet polyurethane slurry - as the processing is used to extract DMF with water (the reason is that DMF and water have infinite solubility), more environmentally friendly, and the production of synthetic leather has good moisture permeability, breathability, soft feel, plump, light, and more rich in natural leather style and appearance, so the The development speed is extremely amazing.
7, polyurethane fiber (Spandex, referred to as spandex)
Spandex's excellent performance: outstanding high elasticity, spandex's high elasticity is currently all elastic fibers can not be compared to its elongation at break is greater than 400%, up to 800%, even in 300% tensile deformation, rebound recovery is still more than 95%; excellent tensile strength, tear strength; weather resistance It has excellent tensile strength, tear strength; strong resistance to weathering and ultraviolet irradiation; resistance to chemicals and washing; and good affinity with dyestuffs.
Spandex has been widely used in textiles, is a high value-added new textile materials, the use of its form there are four main: bare silk, core yarn, coated yarn, co-twisted yarn. Such as stockings, swimsuits, dancewear, Lycra (cotton covered spandex yarn), clothing, etc., in traditional textiles, just add less than 10% of the number of spandex, you can make the traditional textiles grade greatly improved, showing a soft, comfortable, beautiful, elegant style.
8, polyurethane coatings (PU Coatings)
Polyurethane coatings are mainly used in the following areas: aircraft, ships, vehicles, painting; wood, plastic, rubber, leather, surface coating; buildings, painting; anticorrosive coating, and so on.
Waterborne polyurethane coatings - with water as the main medium, featuring low VOC content, low or no environmental pollution, and easy construction - are one of the main substitutes for solventborne coatings. It has been widely used in many fields, such as: (1) wood paint and wood floor paint; (2) paper coating; (3) architectural coatings; (4) leather coating; (5) fabric coating, and so on.
9, polyurethane adhesives (PU Adhesives)
Polyurethane adhesives contain very strong polarity and chemical activity of -NCO- (isocyanate), -NHCOO- (carbamate group), with the substrate containing active hydrogen, such as foam, plastics, wood, leather, fabrics, paper, ceramics, and other porous materials, and metal, glass,
With excellent shear strength and impact resistance, suitable for a variety of structural bonding areas, and has excellent flexibility;
Polyurethane adhesive has excellent rubber properties, can adapt to different coefficients of thermal expansion of the substrate bonding, it is the formation of the substrate with a soft - hard transition layer, not only a strong adhesive, but also a strong adhesion, but also to the substrate, the adhesion is very strong. Not only strong adhesive force, but also has excellent cushioning, shock absorption;
Polyurethane adhesive low temperature and ultra-low temperature performance than all other types of adhesives;
Waterborne polyurethane adhesive - waterborne polyurethane adhesive with low VOC content, low or no environmental pollution, non-flammable and so on, is the focus of the polyurethane adhesive, and is the main focus of the polyurethane adhesive. It is the key development direction of polyurethane adhesives.
10, polyurethane sealant (PU Sealants)
Sealant is used to fill the void (holes, joints, seams, etc.) of the material, both bonding and sealing of two major functions. Polyurethane sealant and silicone sealant, polysulfide sealant constitute the current three varieties of high-grade sealant.
Polyurethane sealant is widely used in civil engineering construction, transportation and other industries:
Application in construction - doors, windows, glass and other filler seals;
Application in civil engineering - highways, bridges, airplane runways, etc.;
Application in automobile - assembly sealing of windows (mainly windshield). (9) Resistant to biological aging; (10) Moderate price