Domestic car with plastic applications increased year by year

Date：2015/3/20 10:52:35

Chery Land Rover Range Rover Aurora, lightweight design is a good SUV models, it is considered in the same light level SUV in its many plastic components are adopted. "March 3, Secretary-General of Engineering Plastics Industry Association, Zheng Kai stand, Land Rover Range Rover Aurora adopted a series of advanced lightweight materials in the manufacture of such columns as PA / PPO alloy to be used in the front fenders, PC / PBT alloy to be used for pedestrian protection energy absorber block and long glass fiber reinforced polypropylene to be used for the instrument panel and inner door modules, making weight less than 1.6 tons, 35 percent lighter than the Range Rover Sport, the carbon dioxide emissions of less than 130 g / km.

Developed countries as a measure of the amount of automotive plastics manufacturing automotive design with the level of an important symbol, up to the moment the German car usage, accounting for over 15% of the materials used in the vehicle. In addition to the British Land Rover, but many models Lamborghini, Mercedes SLR, BMW i is a wide range of places, such as the adoption of more advanced vehicle engineering. Some experts even predict that the future of innovation and application of new materials may overturn conventional cars.

Haze, energy conservation and more stringent fuel economy regulations, domestic car prices have spared no effort to develop lightweight automotive technologies. As we all know, the main body of the current automotive automotive lightweight design optimization, application of alloy materials and non-metallic materials, which in turn is 10% of the car's lighter weight --15%, 30% - 40%, 45% - 55% . Zheng Kai said, engineering plastics and other non-metallic materials, "weight loss" significant effect on the car with its main role is to make the car lighter. Moment, more cars began to adopt plastic parts to replace metal parts.

"Share in the 0.9--1.6 general plastic, glass fiber reinforced composites share does not exceed 2.0, and 7.6 A3 steel, brass, 8.4, 2.7 aluminum. This makes the plastic material of choice for automotive lightweight . the use of plastics can reduce about 40% of the weight of components, while its cost can be greatly reduced. "March 4, when the Institute of Materials Engineering Foton project engineer Gao Song of the position statement.

Beijing Research Institute of Chemical Industry R & D center chief engineer Qian Zhiguo instructions to replace the metal pieces of plastic material parts, not only can reduce vehicle weight, reduce fuel consumption with emissions, but also to enhance the power, comfort and safety of the car, so the widely used in the automotive power and chassis systems, interior and exterior parts, automotive electronics and other components.

Gao Song explained, polyamide (PA) materials are mainly to be used for power, chassis parts and structural components, accounting for about 20% of vehicle plastic; polycarbonate, polyacetal, modified polyphenylene ether with thermoplastic polyester and other materials primarily used in electrical and electronic components and structural parts, accounting for about 15% of the vehicle plastics. Modified polyphenylene ether (PP) with ABS plastic and alloy materials primarily used in interior and exterior parts, with the models they upgrade, engineering plastics applications increase, increasing the proportion of ABS and alloy applications. She also describes some of the advantages of engineering plastics in automotive applications, such as the adoption of a long row of glass fiber reinforced composite materials instead of metal decorative pieces, can reduce the external objects (including pedestrians) impact on the body; plastic products also have absorbed with attenuation ability with vibration noise, can enhance ride comfort; made of plastic body panels are very suitable for use in areas of severe infection; steel parts damaged or if the paint does not do well in advance, it is easy to rust corrosion of metal corrosion, But automotive plastic corrosion resistance. Plastics for corrosion resistance acid, alkali and salt greater than steel. In addition, with the plastic parts to replace metal parts, the cost can be reduced by 30% - 40%.

Domestic vehicle engineering study should be accelerated

Many engineering advantages, by European and American auto companies pay attention, and widely used. It is said that in developed countries, the amount of plastic per vehicle from the 1990s up to the 2004 100--130 kg of 152 kg with 174 kg in 2006, the current amount is 230 kg. Gao Song explained, foreign car brands now large-scale use of plastic composite materials (glass fiber reinforced composite primary if materials such as: long-fiber reinforced thermoplastic material (LFT), etc.) with a high-performance engineering plastics, while domestic brands cars in plastic Application (weight proportion) of composite material is relatively small. It also reflects the gap between the level of our lightweight vehicle technology.

Zheng Kai believes that plastics in the car should have a wider range of applications, but the moment the car is not enough emphasis in the study of domestic use on plastics applications.

Gao Song explained, plastics in the car are included with each application to solve the structural design, manufacturing processes with the equipment, material selection problem with modification angle. In addition, it must be resolved surface or coating products, couplings, test and evaluation issues. She believes that the car companies should be developed according to the needs, requirements for plastic parts manufacturers, material suppliers together with the automobile companies, the need for future development of new models, expand the research component applications technology. BASF related personnel, said: "Let the car lighter and more energy-efficient, BASF automotive plastics are widely used in automotive interior trim, power transmission with the chassis, wheels and other plastic parts, some parts can be replaced by aluminum alloy material, weight reduction and its effect significant. "

Plastic began to replace part of the aluminum alloy pieces

By 2020, the average amount of plastic car could reach more than 500 kg / vehicle, accounting for more than one-third of the materials used in the vehicle. With the widespread use of new energy vehicles, combined with the cost of aluminum, magnesium alloy is too high, and mainly imported. Future car roof, doors, seats parts, wheels and automotive peripheral structures, even the body are likely to switch to plastic. In fact, some foreign high-end models and some parts have been the beginning of the door instead of plastic.

smartforvision concept adopted by BASF's all-plastic wheels, its weight comparison with ordinary wheels can reduce more than 30% (per vehicle alleviate 12--20 kg), in improving fuel economy while also enhancing aerodynamics with crash safety performance. Plastic wheels using LFT, comparing with metal has excellent overall performance. Each wheel is not only to reduce the three kilograms, but also to enhance comfort with the fuel economy of great significance. LFT prominent advantages are: high rigidity with strength, damping good elasticity, heat, creep resistance, dimensional stability, the use of long life.

Volkswagen has chosen Dow glass fiber reinforced PC / ABS alloy, production Phaeton US version of the dashboard bracket. Since this material is simulated crash tests, the energy absorption, 50% higher than traditional materials; so do not sit in the front passenger seat belt from impact damage. It is said that the seventh generation Volkswagen Golf car the front bracket adoption BASF engineering plastics. Since no metal supports and greatly reduces the weight of the components, with the cost of assembly time.

The moment, made from plastic body into the international community has been widely used in small batch production of cars or on some high-end models such as the BMW i series. Adoption of fiber-reinforced composite body with a steel body plastic material compare, to be completed by 35% weight reduction purposes; if the adoption of carbon fiber reinforced composites, can reach more than 60% weight reduction effect. Because the current cost of carbon fiber-reinforced plastic is too high, and therefore but only on BMW, Mercedes and other high-end models to adopt.

【Return】