What Properties Do Automotive Injection Molding Parts Need To Have

Among all the current automotive injection molding parts, UHMW-PE has the best wear resistance and is the most eye-catching. The higher the molecular weight, the more wear resistance, even more than many metal materials (such as carbon steel, stainless steel, bronze, etc.). For example, UHMW-PE pipe has a service life of 4-6 times that of steel pipe under strong corrosion and high wear conditions, and improves the conveying efficiency by 20%, fully demonstrating the advantages of "energy saving, environmental protection, economy, and high efficiency". It is not easy to corrode in alkaline solution, can be used in concentrated hydrochloric acid at 80°C, and has stable performance in 75% concentrated sulfuric acid and 20% nitric acid, and it is also stable to seawater liquid detergent.

Very low coefficient of friction: the coefficient of static friction is 0.07, and the self-lubricating property is good. It is an ideal bearing. The material options of shaft sleeve, sliding sleeve and lining use UHMW-PE as the friction part of the equipment. In addition to improving the wear-resistant life, Energy saving effect can also be received. Impact resistance ranks first in plastics, and it is difficult to crack it whether it is a strong external impact or fluctuations in internal pressure.

Aging resistance: stable performance, good aging resistance, can be buried on the ground or underground, not aging for 50 years, measured according to ASTM method (load 4.6KG/cm²), the thermal deformation temperature is 85 °C, the service temperature can reach 90 °C, special Under certain circumstances, it is allowed to be used at higher temperatures without signs of embrittlement, but the coefficient of linear expansion is large and the thermal conductivity is very poor, so when designing products, full attention should be paid; hygienic and non-toxic: UHMW-PE is odorless, Non-toxic, odorless, non-corrosive, with physiological inertia and physiological adaptability.