The application, proportion and development of nylon (PA) in the automotive field

Polyamide, commonly known as nylon, has many types of PA in industrial use, and PA6, PA66 and PA610 are commonly used. Due to the influence of thermal expansion and water absorption, the dimensional stability of the part is poor, and the shrinkage rate is 1 to 2%. It is necessary to pay attention to the dimensional change of moisture absorption after molding. The water absorption rate is 100%, and it can absorb 8% when the relative moisture absorption is saturated. The suitable wall thickness is 2～3.5mm.

Which parts of the automotive field are the modified PA suitable for?

Modified PA is mainly used in the automotive field to manufacture hoses (brake hoses, fuel pipes), combustion oil filters, air filters, oil filters, water pump casings, water pump impellers, fans, brake fluid tanks, power steering Liquid tank, white leaf window, headlight shell, seat belt.

What is the proportion of modified PA used in the automotive field?

At present, modified PP is the most widely used category of modified plastics for automobiles, accounting for about 46%; followed by modified nylon PA plastics, about 8%, modified ABS about 6%, and modified PC/ABS about 5%. About 6% of flexible PE, about 5% of modified PVC, about 2% of modified POM, and about 2% of modified PBT.

The development of modified PA in the automotive field

From the perspective of the application of modified nylon PA plastics in automobiles, with the development of modification technology, it has gradually developed from the initial interior parts to peripheral parts such as exterior parts, engines, bumpers, etc. The scope of the application continues to expand. Has been expanded to as many as 14.

Modified nylon PA plastic has played an important role in lightweight and has already accounted for 8% of automobiles. This proportion will increase further, providing greater assistance for automobile lightweighting.