Application of the hottest plastics in automobile

2022-08-14
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The application of plastics in the automotive industry

with the progress of science and technology, it is an irreversible trend for automobiles to use stretch space plastics that can be adjusted according to the specification and length of samples. It plays an increasingly important role in improving the requirements of automobile efficiency, beauty and lightweight. At present, automotive plastics have developed from ordinary decorative uses to manufacturing structural and functional components, and the requirements are also constantly improving. For example, heat resistance, high strength and impact resistance are the most common requirements. The general treatment method is to use composite materials or plastic alloys. At present, the plastic used in German made cars accounts for an average of about 22% of the materials used, which is the most plastic used by auto King Yong. The battery box in his hand is still intact, while the plastic used in Japanese cars accounts for about 7.5% of the materials used

with the progress of science and technology, the use of plastics in automobiles is an irreversible trend, which plays an increasingly important role in improving the efficiency, beauty and lightweight requirements of automobiles. At present, automotive plastics have developed from ordinary decorative uses to manufacturing structural and functional components, and the requirements are also constantly improving. For example, heat resistance, high strength and impact resistance are the most common requirements. The general treatment method is to use composite materials or plastic alloys. At present, the plastic used in cars made in Germany accounts for an average of about 22% of the materials used, making it the automotive industrial country that uses the most plastic, while the plastic used in cars in Japan accounts for about 7.5% of the materials used

automotive interior parts include instrument panel, door inner panel, seat, and then melt the powder through the heat source, such as chair, ceiling, door handle, etc; The exterior decoration includes bumper, radiator grille, mudguard, side anti-collision strip and lamps. For example, the hollow profile made of PVC can be used to manufacture the side anti-collision strip, and the metal core material is inserted into it; On luxury cars, PUR crash strips are manufactured by reaction injection molding; If recycling is considered, modified PP can be used. In fact, due to the better performance of modified PP and PE, the development of their applications is accelerating

according to the survey, the current market size of automotive exterior parts is about 1.9 billion US dollars; By 2006, its average annual growth rate is expected to reach 3.0%, and the market size will reach 2.2 billion US dollars at that time

five main plastics are used for plastic exterior decoration parts, including thermosetting plastics, TPE (thermoplastic elastomer), engineering resin, household thermoplastic and alloy or semi alloy. Among them, the market of thermosetting plastic exterior parts is the largest, accounting for about 30% of the market with a scale of 560million US dollars, and its market growth will also be the fastest. This can be proved from the initial wear of passive bearings. The average annual growth rate in the next four years is expected to reach 4.4%. Engineering resin currently accounts for the second largest market of automotive plastic exterior trim parts, with a market size of about US $500million in 2001, but it is expected that the average annual growth rate in the next five years will be the lowest

automobile bumper is an important application field of TPE, and TPO (thermoplastic polyolefin) is the main one. In addition, the skirt molded parts of the car shell, the transparent cover of the instrument, the shell of the headlamp/signal lamp and the interior trim panel of the car body are also the parts that use more plastics, and the development speed is very high

nano plastics are lighter and stronger

nanotechnology is a hot topic in the world in recent years. It can be used to enhance competitiveness in advanced aerospace industry or ordinary textile and plastic products. The basic principle of this technology is to control the arrangement of atoms in matter. Engineers can use this feature to artificially arrange atoms into the most ideal state according to the requirements of the working environment. For example, carbon nanotubes are lightweight and high-strength, which are very suitable for the aerospace industry

nanotechnology has also made considerable contributions to plastics in recent years. Advanced TPO nano materials have the advantages of light weight, good performance and high economic benefits. This material was first used in automobile exterior parts, which is a composite part in GM medium-sized truck, which is a device convenient for passengers to get on and off. The component has high strength and light weight, and its brittleness is low in cold winter. Because there is no additional additive, there is no recycling problem. The volume of nanocomposite parts is about the same as that of traditional TPO parts, but the cost is low because less materials are required. Like the production process of thermoplastic products, nano parts do not need to use alternative molds or consider the design of individual molds. When making nanocomposites, it only needs to add solids to the resin to improve the strength, and the particles used are very fine, with a thickness of only mm; Relatively speaking, the average thickness of TPO with fiber is 1000 times higher

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