What properties do automotive plastic parts need

The application of automotive plastic parts plays a very important role in the design and production of automobiles. It is precisely because of this demand that automotive plastic parts need to have very good performance to ensure the use of automobiles.
Among automobile plastic parts, the materials with higher molecular weight are more wear-resistant, even more than many metal materials. For example, the service life of PE pipe is 4-6 times that of steel pipe under strong corrosion and high wear conditions, and the conveying efficiency is improved by 20%. It is not easy to corrode in alkali solution. It has a low friction coefficient: the static friction coefficient is 0.07 and has good self-lubricating performance. It is an ideal bearing. In addition to improving the wear life, it can also receive the effect of energy saving. PE material also has anti-aging properties: stable performance, good aging resistance, ground and underground can be buried. Measured according to ASTM method (load 4.6kg/cm) ²） The thermal deformation temperature is 85 ℃ and the service temperature can reach 90 ℃. Under special circumstances, it is allowed to be used at a higher temperature without signs of embrittlement, but the linear expansion coefficient is large and the thermal conductivity is very poor. Therefore, full attention should be paid to the design of products.