3 Polyurethane elastomer
In the application of polyurethane elastomers in automobile manufacturing, they are mainly used as key structures such as shock absorption buffer blocks, because elastic polyurethane materials have good cushioning properties. They are used in combination with high-strength spring devices at the chassis of automobiles to improve the effect of shock absorption buffer blocks and enhance the comfort of automobiles. Most automobiles use such materials and technologies.Polyurethane material with high elasticity is also used in the airbag part, because this structure is the last barrier to protect drivers and plays an important role. The strength and elasticity of the airbag must meet the relevant requirements, and elastic polyurethane is the most suitable choice, and the polyurethane material is relatively light, most airbags are only about 200g.
Tires are a part of the car that cannot be driven. Ordinary rubber tires have a relatively short service life and cannot be used in a high-strength environment, and they also have adverse effects on human health. Therefore, it is necessary to choose better materials, and polyurethane materials can meet these requirements, and there are also the characteristics of less investment and relatively simple technology. Polyurethane tires have general heat resistance when braking sharply. This is also the reason why they are relatively limited in specific applications. Generally, polyurethane tires are cast in a pouring process, which can adapt the tires to different requirements, so that the tires will not produce pollution and are very green. I hope it can be solved in the future. The problem that polyurethane tires are not high temperature resistant can better achieve widespread use.
4 Polyurethane adhesive
The hydrogen bond between the polyurethane and the material to be bonded will enhance the cohesion of the molecules and further make the bonding stronger. The polyurethane adhesive also has good toughness and adjustability. The polyurethane adhesive has excellent shear strength and impact resistance. It is suitable for various structural adhesive fields and has excellent flexibility. The polyurethane adhesive has excellent properties and can adapt to the bonding of different coefficients of thermal expansion. It has strong adhesion and also has excellent cushioning and shock absorption functions. Polyurethane material as the windshield glue of the car can achieve a good sealing effect of the car, which can make the car glass and the body more stable, and can increase the overall rigidity and flexibility of the car. Strength, as well as reducing the weight of the car, is conducive to the driving of the car.Many car interiors also use polyurethane materials, because the water resistance of such materials is particularly good, which can prevent the decoration from being deformed in case of water, and better make the interior of the car beautiful and comfortable.
5 Conclusion
The lightweight of automobile manufacturing has become the main trend of automobile manufacturing, and it is also a means to measure the level of automobile manufacturing. It is a key sign of related technical and technological capabilities. Polyurethane is used in automobiles through different polyurethane materials such as polyurethane foams and polyurethane elastomers. There are different application methods. Only China's polyurethane materials are better used in automobile manufacturing, and research on polyurethane materials has solved related bottlenecks, such as tire heat resistance. This also requires the joint research of corresponding experts in the automobile manufacturing industry and the support of related policies, hoping that the level of domestic automobile manufacturing will continue to improve.