What is car carbon fiber

Posted by hw on November 30th, 2020

Carbon fiber has the inherent characteristics of hard carbon materials and the processing characteristics of soft textile fibers, so it is called the king of materials. Often used in airplanes, rockets, and bulletproof vehicles. The application of carbon fiber in automobiles was first in F1 racing cars, and now it is also used in civilian cars. Various auto parts, such as carbon fiber bodies, carbon fiber bumpers, carbon fiber side skirts, and so on.

In 1880, Edison discovered carbon fiber when he was experimenting with filaments. After more than 100 years of development, BMW used carbon fiber on i3 and i8 in 2010, opening the application of carbon fiber in automobiles. Carbon fiber for automobiles has several advantages:

Lightweight: Carbon fiber composite material is 3/4 lighter than steel and 1/3 lighter than aluminum, which is more energy-efficient.

Comfort: The soft tensile properties of carbon fiber can improve the noise and vibration control of the vehicle, and will greatly improve the comfort of the car.

Reliability: Carbon fiber has higher fatigue strength and good collision energy absorption. It can reduce the weight of the vehicle while maintaining strength and safety, reducing the safety risk factor brought by lightweight.

Improve life: Carbon fiber does not have corrosion and rust problems, which enhances the life of auto parts.

How exactly is carbon fiber made?

Wire drawing: The raw material is heated. It is the reinforcing material: the reinforcing material for winding molding, 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, etc. Resin matrix, and various fillers. , Extrusion to form filaments in the shape of a gel, plastic fibers are composed of thousands of filaments.

Stability: After 400 degrees of heating and oxidation, the thermoplastic macromolecules are converted into heat-resistant structures. Make it non-meltable and incombustible at high temperature, maintain the shape of the fiber, and carbonize in a stable state of heat: heat the non-carbon atoms away from 1 to 2 thousand degrees, and become black with high temperature oxidation, and then the carbon atoms are combined in the carbonization furnace Fiber.

Graphitization: The parallel filaments are charged and corroded on the surface in order to better absorb the resin. Hundreds of fibers are used to form a fiber web. The resin coating enters the machine at the same time as the fiber web. The resin is heated and adsorbed on the fiber web by extruding the resin. Into the fiber mesh, the liquid resin becomes a gel after cooling.


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