TPU composite fabrics and TPU fabric characteristics and application fields
TPU composite fabrics and TPU fabric characteristics and application areas
1. TPU characteristics:
The main characteristics of tpu:
Wide range of hardness: By changing the ratio of each reaction component of TPU, products with different hardness can be obtained, and as the hardness increases, the product still maintains good elasticity and wear resistance.
High mechanical strength: TPU products have outstanding load-bearing capacity, impact resistance and shock absorption performance.
Outstanding cold resistance: TPU has a relatively low glass transition temperature and still maintains good elasticity, flexibility and other physical properties at minus 35 degrees.
Good processing performance: TPU can be processed using common thermoplastic material processing methods, such as injection molding, extrusion, calendering, etc. At the same time, co-processing of TPU with certain polymer materials can produce polymer alloys with complementary properties. Oil, water and mold resistant. Good recyclability.
Uses of tpu materials:
The uses of various TPU molded products:
Automotive parts, ball couplings; dust covers; pedal brakes; door lock strikers; bushings, leaf spring bushings; bearings; anti-vibration parts; interior and exterior decorative parts; anti-skid chains, etc.
Machinery and industrial parts
Various gears; seals (mainly wear-resistant and oil-resistant); shock-proof parts; mold needles; bushings; bearings, covers; connectors; rubber screens; printing rubber rollers, etc.
Clothing accessories
Women’s bra straps, clothing elastic bands, etc.
Footwear
Softball shoes, baseball shoes, golf shoes, football shoe soles and forefoot; women’s shoe heels; ski boots; safety boots, high-end soles, etc.
Others
Self-aligning wheels; handles; watch straps, etc.; pipes and hoses; high-pressure pipes; medical pipes; hydraulic pipes; pneumatic pipes; fuel pipes; coating pipes; delivery pipes; fire hoses, etc.
Film·Plate
Rotating belt (with certain stretching effect); air cushion; diaphragm; keyboard board; composite cloth, etc.
Wires and cables
Power communication cables; computer wiring; automobile wiring; exploration cables, etc.
TPU is thermoplastic polyurethane, which is divided into polyester type and polyether type. It has a wide hardness range (60ha-85hd), wear resistance, oil resistance, transparency and good elasticity. It is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. Application, halogen-free flame retardant TPU can also replace soft PVC to meet environmental protection requirements in more and more fields. There are many TPU brands and grades, and the quality varies. When choosing TPU, it is best to go through detailed evaluation and demonstration, otherwise you will not get a cost-effective result.
Through the above introduction, everyone has got an accurate answer to the question of what kind of material TPU is. TPU is a material that can soften at a certain temperature and remain unchanged at normal temperature. It is used in many shoes for stability and support. Function. TPU, also known as polyurethane rubber, is a type of polyurethane. It is a relatively new product in China and is widely used in the shoemaking industry, pipes… and other industries.
Introduction to the characteristics and application development of polyurethane elastomer plastic
Introduction to the characteristics and application development of polyurethane elastomer plastic
With the development of society and the advancement of technology, the application of new materials has become more and more widespread. Since the early 1980s, polyurethane elastomers have been converted from military use to dual-use, and mainly for civilian use. The variety and grades of polyurethane elastomers have continued to increase. , the scale of production is expanding day by day, and its role in various sectors of the national economy and people’s basic necessities of life is becoming increasingly important. This article intends to talk about the advantages and disadvantages of polyurethane elastomers and the current status and prospects of their application and development from the perspective of practical applications.
1. The main advantages of polyurethane elastomer
1. The performance has a wide adjustable range. A number of physical and mechanical performance indicators can be changed within a certain range through the selection of raw materials and adjustment of the formula, thereby meeting users’ different requirements for product performance. For example, hardness is often an important indicator for users of products. Polyurethane elastomers can be made into soft printing rollers with a Shore A hardness of about 20, or hard steel rolling rollers with a Shore D hardness of over 70. This is difficult to achieve with ordinary elastomer materials. Polyurethane elastomer is a polar polymer material composed of many flexible segments and rigid segments. As the proportion of rigid segments increases and the density of polar groups increases, the original strength and hardness of the elastomer will increase accordingly.
2. Excellent wear resistance. Especially under working conditions in the presence of water, oil and other humidifying media, its wear resistance is often several to dozens of times that of ordinary rubber materials. Although metal materials such as steel are very hard, they are not necessarily wear-resistant. For example, in the large water pumps in the Yellow River irrigation area, the metal orifice rings and protective rings of the flow-passing parts have been washed away by a large amount of sediment, and they will become severely worn and leaky within a few hundred hours. , while the mouth ring and protective ring covered with polyurethane elastomer have not been worn after 1800 hours of continuous operation. Others such as the rubber rollers of rice hullers, vibrating screen plates for coal preparation, track and field tracks in sports fields, dynamic oil seals for cranes and forklifts, elevator wheels and roller skate wheels are also polyurethane elastomers. of use. One thing that needs to be mentioned here is that to increase the friction coefficient of medium and low hardness polyurethane elastomer parts and improve the wear resistance under load, a small amount of aluminum disulfide, graphite or silicone oil can be added to this type of polyurethane elastomer. Lubricant.
3. Diverse processing methods and wide applicability. Polyurethane elastomer can be molded using the same mastication, mixing, and vulcanization processes as general rubber (referred to as MPU); it can also be made into liquid rubber and cast into molds.There are two methods for bonding fabrics. One is called post-adhesive: first make a TPU film and then glue it with the fabric. The other is called online lamination: apply glue on the fabric or not glue it, and directly sew the TPU. Make TPU composite fabric or mesh fabric on the fabric.
Generally, the factories that do post-pasting processing are not large in scale. There are many small factories in China. Most of them purchase TPU films from external film factories and only complete the gluing and laminating process themselves. The post-pasting process requires the TPU film to be subjected to high temperature and high pressure again. Improper process control will cause damage to the film and even small holes.
TPU composite fabric is to use TPU film on various fabrics to form a composite material, and combine the characteristics of the two to obtain a new type of fabric.
TPU composite fabrics are used for: inflatable life jackets, diving BC jackets, life rafts, inflatable boats, inflatable tents, military inflatable self-expanding mattresses, massage air bags, medical anti-decubitus mattresses and professional waterproof backpacks. gd5RiFM
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