Application of Carbon Fiber in Automobile Industry

Time:2019-3-7 14:06:36 Click:

Carbon fiber reinforced composites (CFRP) have excellent physical properties: 30% lighter than aluminium, 50% lighter than steel, and 7-9 times stronger than steel. They were first used in high-tech and sophisticated fields such as aviation, aerospace and military industry. The industry acknowledges that CFRP (carbon fiber reinforced composites) is the best way to solve the problem of weight loss of new energy vehicles at present. The application of carbon fiber can reduce the weight of vehicles by 30%~60%. It is known as the "King of Lightweight". It is the leader of the "lean revolution" of new energy vehicles and plays a key role in vehicle lightweight.

I. Lightweight

Carbon fiber composites have incomparable strength and specific modulus of other materials. The density of carbon fiber composites is only about 1.6g/cm, which is much lower than that of steel and aluminium. The application of carbon fiber composites in the design of automobile body and other parts can reduce the quality of the whole vehicle by about 35% and fuel consumption. For example, Volkswagen's XL1 vehicle, which uses carbon fiber composite materials and components, has a total mass of 795 kg. Combined with hybrid technology, the fuel consumption of 100 kilometers is only 0.9 liters.


Carbon fiber composites are mainly composed of carbon fiber bundles and resin materials. The chemical properties of carbon elements are stable, and no surface anti-corrosion treatment is needed. Their weatherability and aging resistance are excellent, and their service life is generally 2-3 times that of steel. The fatigue strength of functional parts made of CFRP material is also much higher than that of steel.

III. Safety

The tensile strength of CFRP is generally more than 3500 Mpa, which is five times that of ordinary steel. The cockpit made of CFRP has little deformation in collision, which can effectively protect the driver's living space. The special braided crash energy absorbing structure can effectively improve vehicle passive safety by breaking into smaller fragments in high-speed crash and absorbing a large amount of impact energy (energy absorption is more than three times that of ordinary steel).

4. Beauty

Only one layer of varnish is sprayed on the surface, and the inner carbon fiber bundles can be clearly seen in the warp and weft or diagonal cross-alignment, which is compact and regular. Carbon fiber composite material is applied to the rear spoiler, rearview mirror, roof, dashboard, auxiliary dashboard, door core board and steering wheel and other visualized parts to create the visual effect of vehicle science and technology movement.

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