What are the engineering plastics used in automobile parts?
Iglidur (R) the primary requirement of application of engineering plastics in the automotive sector 1 bearing seat system is usually used for low cost, car seat system of sheet metal materials or punching holes, and cold-rolled steel plate has great tolerance. However, in the small gap seat system need to reduce as much as possible in order to noise. To solve this contradiction, now more and more use of engineering plastic sliding bearing.
In the field of automobile manufacturing, PBT is widely used in the production of bumper, carburetor components, fenders, spoiler, spark plug terminal board, fuel system parts, instrument panel, auto ignition, accelerator and clutch pedal etc.. PBT, PC, POM and PA increased in the automobile manufacturing industry is extremely competitive, PA easy to absorb water, heat resistance of PC is less than PBT; take over in car use, because the water resistance of PBT is better than PA, will gradually replace PA,. In the relatively high humidity, very humid circumstances, due to moisture easily lead to plastic reduction, electrical nodes prone to corrosion, often using modified PBT. At 80 and 90% relative humidity, PBT is still in use and works well.
Nylon is mainly used in automotive engines and engine components, the main varieties are GFPA6, GFPA66, enhanced flame retardant, PA6 and other products. (1) in the application of automobile engine peripheral parts, because the engine peripheral parts are mainly heating and vibrating parts, most of the materials used in the parts are glass fiber reinforced nylon. This is because nylon has a good overall performance, nylon modified with glass fiber, the main properties have been greatly improved, such as strength, precision products, dimensional stability have greatly improved. In addition, nylon varieties, easier recycling, recycling, relatively cheap, etc., these factors make nylon become an ideal choice of components around the engine material. The intake manifold is modified nylon in the car is the most typical application, in 1990 the German car company BMW, the first reinforced nylon as raw material to produce the intake manifold application in six cylinder engine with glass fiber; after the United States Ford and DuPont Co, together with glass fiber reinforced PA66 manufacturing application in V6 engine intake manifold, after all the big car companies in the world have followed the modified nylon manifold is widely used. (2) application in automobile engine parts. The engine cover, the engine decoration cover, the cylinder head and so on parts generally use the modified nylon as the first choice material, compared with the metal material, take the cylinder head as an example, the quality reduces 50%, the cost reduces 30%. In addition to engine components, additional nylon components such as oil filters, wipers, radiators, grilles, etc. are also used in other stressed parts of the vehicle.
The main function of engineering plastics for automobiles is to make cars lighter, so as to achieve the purpose of saving oil and high speed. Developed countries use automobile plastic quantity as an important symbol to measure the level of automobile design and manufacture. The largest amount of plastic used in the world is Germany, and the amount of plastic used is 15% of the total material. In recent years, China's rapid development of automobile industry, the automobile annual output of more than 4 million vehicles, according to the prediction of foreign plastic content, the automotive industry using modified plastics in more than 500 thousand tons, of which the engineering plastics accounts for a large proportion of the five engineering plastics, performance characteristics of different purposes, in the car also there is emphasis on.
