The automobile industry is the most widely used industrial category of engineering plastics in developed countries, and it is also one of the most promising fields of engineering plastics in China. The main function of engineering plastics used in automobiles is to lighten the weight of automobiles, so as to achieve the purpose of fuel saving and high speed. With the advancement of technology, the use of plastics in automobiles is an irreversible trend, and it plays an increasingly important role in improving the performance, aesthetics and lightweight requirements of automobiles.
What are the engineering plastics used in automotive plastic parts?
Nylon is mainly used in automobile engines and engine peripheral parts. The main varieties are GFPA6, GFPA66 and enhanced flame retardant PA6.
Since the peripheral parts of the engine are mainly heat-generating and vibrating parts, most of the materials used in the parts are glass fiber reinforced nylon. This is because nylon has better comprehensive properties, and the main properties of nylon modified with glass fiber are greatly improved, such as strength, product accuracy, and dimensional stability. In addition, nylon has many varieties, it is easier to recycle and reuse, and the price is relatively cheap. These factors make nylon an ideal material for engine peripheral parts. The intake manifold is the most typical application of modified nylon materials in the automotive field. In 1990, the German BMW car company first applied the intake manifold made of glass fiber reinforced nylon to the six-cylinder engine. After that, Ford in the United States used the intake manifold made of glass fiber reinforced PA66 to apply to the V6 engine, and then the world's major automobile companies followed, and the modified nylon intake manifold was widely used.
The engine cover, engine decorative cover, and cylinder head cover are generally made of modified nylon as the preferred material. Compared with metal materials, taking the cylinder head cover as an example, the quality is reduced by 50% and the cost is reduced by 30%. In addition to engine parts, reinforced nylon can also be used in other stressed parts of the car, such as oil filters, wipers, radiator grilles, etc.
The automotive industry is the largest potential market for POM materials. POM has the advantages of lightweight, high hardness, wear resistance, creep resistance, chemical corrosion resistance, etc. It is very suitable for the manufacture of automobile pumps, carburetor parts, oil pipes, power valves, joint bearings, motor gears, cranks, handles, instrument panels, car window lifter devices, electric switches, seat belt buckles, etc. These parts have low wear on the metal, reducing the amount of lubricant used and enhancing the life of the part.
Due to its excellent heat resistance, impact resistance, rigidity and good processing fluidity, modified PC is mainly used in automotive for exterior and interior parts, parts around instrument panels, antifreeze panels, door handles, shade flow panels, brackets, steering column sheaths, trim panels, air conditioning system parts, lamp parts and so on.
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