Wide hardness range: products with different hardness can be obtained by changing the proportion of TPU reaction components, and with the increase of hardness, their products still maintain good elasticity and wear resistance.
High mechanical strength: TPU products have outstanding bearing capacity, impact resistance and shock absorption.
Outstanding cold resistance: the glass transition temperature of TPU is relatively low, and it still maintains good physical properties such as elasticity and flexibility at MINUS 35 degrees.
Good processability: TPU can be processed by common processing methods of thermoplastic materials, such as injection molding, extrusion and calendering. At the same time, TPU can be processed with some polymer materials to obtain polymer alloys with complementary properties.
Performance summary ..... It has the characteristics of high strength, good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance and weather resistance that other plastic materials can't match. At the same time, it has many excellent functions such as high waterproof, moisture permeability, wind resistance, cold resistance, antibacterial, mildew resistance, warmth retention, ultraviolet resistance, energy release and so on.
According to the application, TPU is mainly divided into the following categories:
1.TPU is used in shoe materials mainly because of its excellent elasticity and wear resistance. The footwear products containing TPU are far superior to ordinary footwear products in wearing comfort, so they are widely used in high-grade footwear products, especially some sports shoes and casual shoes.
2. Film TPU is becoming more and more popular because of its superior performance and environmental protection concept. At present, TPU can replace PVC wherever it is used. TPU film can not only be attached to various fabrics, but also produce products with clear outline and stable size through vacuum thermoforming. With the continuous improvement of environmental awareness in China, the application of TPU is more and more extensive. Among them, the fields with rapid growth are: vamp lining, thermal underwear, transparent underwear, transparent shoulder strap, elastic band and medical breathable adhesive tape.
3. Adhesive TPU adhesive is a kind of polyurethane adhesive. Polyurethane adhesives have been widely used in Europe and America, especially in the use of footwear adhesives. TPU adhesive used in China is polyurethane adhesive obtained by dissolving TPU. In the use of TPU adhesives, Guangdong, Fujian, Zhejiang and Shanghai are the main areas.
4. Hose TPU hoses are widely used as gas and oil hoses for airplanes, tanks, automobiles, motorcycles, machine tools and other mechanical equipment in China because of their flexibility, good tensile strength and impact strength. The main hose manufacturers of TPU are concentrated in Guangdong, Zhejiang, Jiangsu, Shandong, Hebei and other places.
5.TPU provides tear resistance, wear resistance and bending characteristics for wires, and high and low temperature resistance is the key to cable performance. Therefore, in China market, TPU used for high-grade cables such as control cables and power cables is used to protect coating materials of complex cables, and its application is increasingly extensive.
6. Polyurethane elastomer for roller is widely used in roller because of its high mechanical strength, excellent wear resistance, excellent oil resistance, acid and alkali resistance and outstanding pressure resistance. There are mainly the following kinds of rollers in China: industrial rollers, household rollers, sports equipment wheels, medical equipment wheels and toy wheels.
7. Plastic modification can be used to plasticize PA and ABS, but the cost is high.