Carbon fiber has many high-quality characteristics. Carbon fiber has high axial compressive strength and strain rate, low relative density, high specificity, no stress relaxation, high temperature and high pressure resistance under non-air oxidation natural environment, good fatigue resistance, constant pressure specific heat and The electrical conductivity is close to the middle of non-metallic materials and metallic materials, the linear expansion coefficient is small and various, the corrosion resistance is good, and the X-ray passability is good. Good electrical conductivity and heat transfer performance, good magnetic shielding material properties, etc. Carbon fiber has better corrosion resistance than FRP, lighter net weight, higher compressive strength and stronger ductility. Compared with the traditional glass fiber, the Young's modulus of carbon fiber is more than three times that of it; compared with Kevlar fiber, the Young's modulus is about twice as much as that of carbon fiber. It does not dissolve or swell in solvents, acids and alkalis, and is corrosion resistant. Sexually prominent.
Natural carbon fiber raw materials not only have the advantage of high toughness, but the lightweight of the car is another advantage. At this stage, steel raw materials account for about 3/4 of the net weight of the car body. If the stainless steel sheet components of the car are replaced by carbon fiber polymer materials, the net weight of the car body can be reduced by 300kg, the high efficiency of gasoline and diesel can be increased by 36%, and the carbon dioxide consumption can be reduced by 17%. It is a great development of new energy for automobiles. It is necessary to understand that even if only one kilogram is lost on the car, very hard work is required in many cases. In addition, the polymer material of carbon fiber also has heat resistance and strong aging resistance. , The feature of strong design scheme.
Car carbon fiber (car carbonized chemical fiber): specifically refers to some raw materials made of carbon fiber hand-woven or double-layer composite, because it is light and hard, and it is the fundamental reason why its main purpose is very common. Generally, the relative density of carbon fiber is 1750kg/cubic (water density is 1005kg/cubic). Such a low relative density allows it to be widely used in large aircraft, such as the A350 and A380 of the upper air passenger aircraft, and the Boeing 787. Molecular materials to ease fuel consumption.
However, it must be noted that there are many fake CarbonFiber aerodynamic parts on the market today, most of which are covered with a layer of CarbonFiber outside of the FiberGlass, so they are actually heavier. One of the major drawbacks of carbon fiber raw materials is its poor ductility. We know that the car body at this stage can recover after an impact in many cases. The key is that metal composite materials such as steel are plastic and can produce large deformations. Not destroyed. And the car body of carbon fiber polymer material is not like that. If the car shell uses carbon fiber polymer material, it cannot be recovered after the impact. Only the overall replacement is carried out, so the recyclability and cost will be lower. No raw materials such as steel.