As the main trend of the future development of the automotive field, lightweight polymer materials must be effectively used, so that the lightweight of automobiles can be realized, and it can also have a certain energy-saving and environmental protection effect, and it can also make the manufacturing comprehension of automobiles more perfect, so that the overall performance of automobiles can be improved, and polyurethane materials can be rationally used in the structure and decoration of automobile manufacturing.
1 Polyurethane foam
Polyurethane foams are mainly foamed by the polymerization of isocyanates and hydroxyl compounds. Polyurethane foams can be divided into soft and semi-hard and hard materials. Soft foams are mainly used in automobile manufacturing. Materials that people can come into direct contact with, such as car headrests and car ceilings, can be resilient because of their characteristics, which can effectively protect people's safety and improve the safety factor of automobiles.The semi-hard materials are mainly used in structures such as dashboards, which can effectively save manufacturing time and have relatively high stability.Hard materials are mainly used in the thermal insulation of automobile compartments. Polyurethane foams are usually used to delay combustion, prevent smoke and even extinguish ignition components by adding flame retardant to improve the flame retardant of foams, thereby improving the safety of automobiles.It has a good filling effect, which can prevent the car from being corroded and reduce the noise in the car.
2 Reaction injection molded polyurethane products
The reactive injection molding method has the advantages of low equipment investment and operating costs, beautiful product appearance, good impact resistance, and high design flexibility. This kind of polyurethane product is formed by manufacturing liquid raw materials in molds. The rigidity and strength are almost the same as the strength of steel, but it is 50% lighter than steel, which can better promote the lightweight of automobiles. It is mainly used in parts of the structure such as the body and steering wheel.As the main structure of the car, the steering wheel can effectively ensure the safety of the family cannibal good afternoon, reduce the injury to the driver in the event of an accident, and ensure the stability of the structure.The bumpers of many cars also use such products, and steel bars can also be embedded inside to better ensure that drivers are least threatened.When the body siding is made of polyurethane material, it is mainly because of its good impact force, which can ensure the overall performance of the body and can not be affected by deformation in various environments.