The hottest automotive engineering plastics will r

2022-09-23
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Automotive engineering plastics will replace more metal parts

Chery, Land Rover and Range Rover evoque are models with better lightweight design of SUVs. It is light among SUVs of the same level. Many parts of its 4. Panels (control boxes, namely monitors) please use dry cloth to wipe the parts with engineering plastics. " On March 3, Zheng Kai, Secretary General of China Engineering Plastics Industry Association, said in an interview with China Automotive News that range rover evoque used a series of advanced lightweight materials in its manufacturing, such as pa/ppo alloy applied to the front fender, pc/pbt alloy applied to the pedestrian protection energy absorption block, and long glass fiber reinforced polypropylene applied to the instrument panel and inner door module, making its self weight less than 1.6 tons, 35% lighter than the range rover sports version, Carbon dioxide emissions are less than 130 g/km

automotive engineering plastics will replace more metal parts

developed countries regard the amount of automotive plastics as an important symbol to measure the level of automotive design and manufacturing. At present, Germany has the largest amount of automotive materials, accounting for more than 15% of the total vehicle materials. In addition to British Land Rover, Lamborghini, Mercedes Benz SLR, BMW I series and many other models use more advanced automotive engineering plastics. Some experts even predict that the innovative application of new materials in the future may overturn traditional cars

with haze, energy conservation and emission reduction and stricter fuel consumption regulations, domestic car companies have spared no effort to develop vehicle lightweight technology. As we all know, automobile lightweight is mainly reflected in the optimization of automobile design, the application of alloy materials and non-metallic materials, which in turn is the lightweight weight reduction of automobile by 10% - 15%, 30% - 40%, 45% - 55%. Zheng Kai told that the "weight reduction" effect of non-metallic materials such as engineering plastics is obvious, and its main role in cars is to make cars lightweight. At present, more and more automobile parts begin to use engineering plastics to replace metal parts

the application of automotive engineering plastics is increasing year by year

"the proportion of general plastics is 0.9 ~ 1.6, and the proportion of glass fiber reinforced composites will not exceed 2.0, while the proportion of A3 steel is 7.6, brass is 8.4, and aluminum is 2.7. This makes plastics the preferred material for automotive lightweight. Using plastics can reduce the weight of parts by about 40%, and its cost can be greatly reduced." On March 4, Gao Song, an engineer from the Institute of material engineering of Foton Engineering Research Institute, said in an interview

Qian Zhiguo, chief engineer of the R & D center of Beijing Research Institute of chemical industry, said that replacing metal parts with plastic parts can not only reduce the vehicle weight, reduce fuel consumption and emissions, but also improve the power, comfort and safety of vehicles. Therefore, it is widely used in automotive power and chassis systems, internal and external decorative parts, automotive electronics and other components

according to Gao Song, polyamide (PA) materials are mainly used in power, chassis parts and structural parts, accounting for about 20% of the plastic of the whole vehicle; Polycarbonate, POM, modified polyphenylene oxide, thermoplastic polyester and other materials are mainly used in electronic and electrical components and structural parts, accounting for about 15% of the vehicle plastic. Modified polyphenylene oxide (PP) and ABS engineering plastics and their alloy materials are mainly used in interior and exterior decoration parts. With the improvement of vehicle grade, the application of engineering plastics increases, and the application proportion of ABS and its alloy increases. She also introduced some advantages of engineering plastics in automotive applications, such as the use of long glass fiber reinforced composites instead of metal exterior trim, which can reduce the impact of external objects (including pedestrians) on the body; Plastic products also have the ability to absorb and attenuate vibration and noise, which can improve the comfort of riding; Using plastic as body covering parts is very suitable for use in heavily polluted areas; Steel products are easy to rust and corrode metals if the paint surface is damaged or the early anti-corrosion is not well done, but automotive plastics have strong corrosion resistance. The corrosion resistance of plastics to acid, alkali and salt is greater than that of steel plates. In addition, the cost of replacing metal parts with plastic parts can be reduced by 30% - 40%

domestic research on automotive engineering plastics should be accelerated

engineering plastics have many advantages, which are deeply valued by European and American automobile enterprises and are widely used. It is reported that in developed countries, the consumption of plastic per vehicle has increased from 100 ~ 130kg in the 1990s to 152kg in 2004 and 174kg in 2006, and now the consumption is 230kg. Therefore, according to Gao Song, plastic composites (mainly glass fiber reinforced composites such as long fiber reinforced thermoplastic (LFT)) and high-performance engineering plastics have been widely used by foreign automobile brands, while the application of domestic independent brand automobiles in plastic composites (and the weight proportion in addition to the above configuration) is relatively small. This also reflects the gap in our vehicle lightweight technology

ZHENG Kai believes that engineering plastics should be more widely used in automobiles, but at present, China does not pay enough attention to the research on the application of automotive engineering plastics

Gao Song introduced that every application of plastics in automobiles involves solving problems in structural design, manufacturing technology and equipment, material selection and modification. In addition, the problems of surface or coating, connection, test and evaluation of products must be solved. She believes that vehicle enterprises should, according to the needs of independent development, require plastic parts manufacturers, material suppliers and vehicle enterprises to jointly carry out research on the application technology of parts for the development of new models in the future. BASF related personnel said in an interview: "to make the car lighter and more energy-saving, BASF automotive plastics are widely used in automotive interior and exterior trim parts, power transmission and chassis, plastic wheel hubs and other components. Some components can replace aluminum alloy materials, and its weight and cost reduction effect is obvious."

engineering plastics begin to replace some aluminum alloy parts

by 2020, the average plastic consumption of vehicles will probably reach more than 500kg/vehicle, accounting for more than 1/3 of the total vehicle materials. With the widespread use of new energy vehicles, coupled with the high cost of aluminum and magnesium alloys, and mainly imported. In the future, engineering plastics may be used for the roof, doors, seat components, wheel hubs, surrounding structural parts of cars, and even the body of cars. In fact, some components such as doors of some foreign high-end models have begun to use engineering plastics

smartforvision concept car adopts BASF's all plastic wheel hub, and its weight can be reduced by more than 30% compared with ordinary wheel hubs (12 ~ 20kg per vehicle), which not only improves fuel economy, but also enhances aerodynamics and crash safety. All plastic wheel hubs use LFT, which has excellent comprehensive performance compared with those made of metal. Each wheel not only reduces 3kg, but also has important significance for improving ride comfort and fuel economy. The outstanding advantages of LFT are: high stiffness and strength, good vibration damping resilience, heat resistance, creep resistance, dimensional stability, and long service life

Volkswagen has also selected Dow's glass fiber reinforced pc/abs alloy to produce Phaeton's American version of the instrument panel bracket. This is because the energy absorption of this material in the simulated impact test is 50% higher than that of traditional materials; Passengers sitting in front without safety belts are protected from impact injury. It is reported that Volkswagen's 7th generation Golf front-end bracket adopts BASF's automotive engineering plastic. Because there is no need for metal support, the weight, assembly time and cost of components are greatly reduced

at present, the body made of plastic in the world has been widely used in small batch production vehicles or some high-end models, such as BMW I series products. Compared with the steel body, the body made of fiber reinforced composite plastic can achieve the goal of 35% weight reduction; If carbon fiber reinforced composites are used, the weight can be reduced by more than 60%. At present, due to the high cost of carbon fiber plastic, it is only used in high-end models such as BMW and Mercedes Benz

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