In recent years, the application of carbon fiber in the automotive industry has caused widespread concern in the industry. “If Ford creates pipeline production is the first revolution in the automotive industry, then carbon fiber + new energy may be the second automobile revolution.” There have been such feelings in the market.
It is understood that vehicle carbon fiber composite materials can be used as automobile drive shaft, plate spring, frame and brake pads, which can reduce the weight of the car and save the source of energy saving. The following set of data is sufficient to illustrate the advantages of carbon fiber applications in the automotive industry. Relevant research data show that at present, steel material accounts for about 3/4 of body weight. If the steel parts of the car are completely replaced by carbon fiber composites, the weight of the car body can be reduced by 300kg, the fuel efficiency is increased by 36%, and the carbon dioxide emissions can be cut. Minus 17%.
Since 2009, China has reelected the world’s largest automobile producer and the largest auto market for 7 consecutive years, ranking the first automobile power in the world. The booming automobile industry has also brought opportunities for development of carbon fiber materials.
In 2001, BMW and Volkswagen almost simultaneously found a consulting firm to do research on what technology will subvert the existing automotive industry in the next 20 years. The conclusion is consistent, that is, the cost of carbon fiber products will be flat with the aluminum alloy by 2020, thus subverting the existing automobile industry structure.
In fact, excellent performance or carbon fiber materials attract important factors such as BMW, Volkswagen, etc. Industry analysts say that the proportion of carbon fiber is less than 1/4 of the steel material, and the tensile strength of carbon fiber resin composite is generally above 3500Mpa, seven to nine times the steel material, and the tensile modulus of 23000~43000Mpa is much higher than that of steel.
For traditional vehicles, facing increasingly stringent emission regulations, body weight is an inevitable trend. “Light weight is a very urgent requirement for the automobile industry. The automobile industry used high strength steel, aluminum alloy, magnesium alloy and so on. In weight reduction, high strength steel can reduce weight by 5-25% compared to steel. Aluminum alloy can reduce weight by 40% compared with steel, and the weight of multi direction carbon fiber can be reduced by 20% compared with aluminum alloy, if it is one way carbon fiber compared with aluminum alloy. The weight can be reduced by 60%. ” It is easy to see that carbon fiber materials with low density and light weight have become the first choice for automotive manufacturers who are in urgent need of technological change.
BMW I3 and I8, which are all carbon fiber body, can be regarded as the representative works of carbon fiber in the automotive industry. More professionals call BMW I3 and I8 a revolution in the automotive industry. As a car giant, BMW established a joint venture with the world’s leading carbon maker SGL in 2009 to produce carbon fiber for car use and supply carbon fiber to BMW. In fact, not only has BMW achieved a breakthrough, Mercedes Benz and Audi have already laid out the layout of carbon fiber body and parts product lines. And this trend has spread all over the world.
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