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Carbon fiber, which is familiar and unfamiliar, is often heard. It is a high-performance material. It has both the hard inherent characteristics of carbon materials and the soft processing characteristics of textile fibers. It is known as the king of materials.

High end materials often used in aircraft, rockets and bulletproof vehicles. The application of carbon fiber in cars was first used in F1 racing cars. Now it is also used in civil cars. It is painted with black paint and deliberately exposes the carbon fiber components with black woven patterns. When it is turned on, it is pulling the wind.

Fiber material is super light and soft. How can it be made into solid auto parts? How to reduce the cost of carbon fiber used in cars?

The best carbon fiber technologies are Japan and the United States. Japan is the country with the largest carbon fiber production in the century, and Japan's carbon fiber production capacity accounts for half of the world.

In 1880, Edison invented carbon fiber. Yes, Edison invented the light bulb. Carbon fiber was found when testing the filament. After more than 100 years of development, BMW used carbon fiber on I3 and I8 in 2010, opening the application of carbon fiber in cars.

Manufacturing process of carbon fiber

Wire drawing: the raw material is heated. It is a reinforcing material.

The reinforcing materials used for winding are mainly various fiber yarns: such as alkali free glass fiber yarn, medium alkali glass fiber yarn, carbon fiber yarn, high-strength glass fiber yarn, aramid fiber yarn and surface felt. Resin matrix, and various fillers. Extruded into gel shaped filaments, plastic fibers are composed of thousands of filaments.

Stability: after 400 degrees of heating and oxidation, the thermoplastic macromolecules are converted into heat-resistant structure. Make it incombustible at high temperature, keep the fiber shape, and carbonize in a stable state. Heat 1000-2000 degrees to drive away non carbon atoms, turn black with high-temperature oxidation, and then combine the carbon atoms on the fiber through the carbonization furnace.

Graphitization: parallel filaments pass through the charged corrosion surface to better absorb the resin. Hundreds of fibers are used to form a fiber net. The resin coating and the fiber net enter the machine at the same time to heat the resin and adsorb it on the fiber net. The resin infiltrates into the fiber net through extrusion. After cooling, the liquid resin becomes a gel.

The principle is like pasting a piece of paper completely into a thick pile of paper, and the pile of paper will become strong.

When it comes to carbon fiber, I will think that it is strong, lightweight and expensive (compared with steel and aluminum products). For example, it is used in high-end products such as F1 racing cars, but now it is used in civil cars. In fact, carbon fiber is a general term of materials in a broad sense, and there are many derived composite materials.

The cost of high-temperature heat treatment is also different for different composites according to the carbonization rate, so the price of different carbon fiber materials will vary greatly. With the development of technology, the scope of application becomes larger, more capital investment and the maturity of recycling technology, the cost of carbon fiber will be further reduced. Carbon fiber composites will be more and more used in automobiles.

Therefore, carbon fiber will be more and more widely used in the field of automobile. In the future, the emission of automobile will be lower and lower, and the automobile itself will be more and more "high carbon". Two technologies that will subvert cars in the future are carbon fiber, new materials and intelligence.