Carbon fiber is a fibrous carbon material with a carbon content of more than 90%. It is prepared by carbonizing various organic fibers at high temperature in an inert gas. It has excellent mechanical properties. Especially in the high temperature inert environment above 2000 ℃, it is the only substance whose strength does not decrease. Carbon fiber coiled tube and carbon fiber reinforced polymer (CFRP), as new materials in the 21st century, are widely used in automobiles due to their high strength, high modulus of elasticity and low specific gravity.
Carbon fiber coil forming technology is a forming method of composite material products formed by hot rolls of carbon fiber prepreg on a coiler.
The principle is to use hot rollers on a carbon fiber winding machine to soften the prepreg and melt the resin binder on the prepreg. Under a certain tension, during the rotating operation of the roller, the prepreg is continuously wound onto the tube core through the friction between the roller and the mandrel until it reaches the desired thickness, and then cooled and shaped by the cold roller, from Remove from the winder and cure in a curing oven. After the tube has cured, a tube wound with composite material can be obtained by removing the core former. According to the feeding method of prepreg in the molding process, it can be divided into manual feeding method and continuous mechanical feeding method. The basic process is as follows: First, the drum is cleaned, then the hot drum is heated to the set temperature, and the tension of the prepreg is adjusted. No pressure on the roller, wrap the lead cloth on the mold coated with release agent for 1 turn, then lower the pressure roller, put the print head cloth on the hot roller, pull out the prepreg, and stick the prepreg on the The heated part of the head cloth overlaps with the lead cloth. The length of the lead cloth is about 800 ~ 1200 mm, depending on the diameter of the pipe, the overlapping length of the lead cloth and the tape is generally 150 ~ 250 mm. When coiling a thick-walled pipe, during normal operation, moderately speed up the mandrel speed and slow down. Design close to the thickness of the wall, reach the design thickness, cut the tape. Then, under the condition of maintaining the pressure of the pressure roller, the mandrel rotates continuously for 1-2 circles. Finally, lift the pressure roller to measure the outer diameter of the tube blank. After passing the test, it is taken out from the carbon fiber coiler and sent to a curing furnace for curing and molding.
Seat heating pad
Carbon fiber auto sheet heating pad is a breakthrough in the application of carbon fiber heating in the automotive industry. Carbon fiber heating element technology is becoming more and more popular in the automotive auxiliary market, completely replacing the traditional sheet heating system. At present, almost all the high-end and luxury cars of the car manufacturers in the world are equipped with such seat heating devices, such as Mercedes-Benz, BMW, Audi, Volkswagen, Honda, Nissan and so on. Carbon fiber heat load Carbon fiber is a relatively high-performance heat-conducting material with a thermal efficiency of up to 96%, evenly distributed in the heating pad
Uniform distribution ensures uniform heat release in the seat heating area, carbon fiber filaments and uniform temperature distribution, and long-term use of the heating pad ensures that the leather on the seat surface is smooth and complete. No line marks and localized discoloration. If the temperature exceeds the set range, the power will be cut off automatically. If the temperature cannot meet the requirements, the power will be turned on automatically to adjust the temperature. Carbon fiber is suitable for infrared wavelengths absorbed by the human body and has health care effects. It can fully reduce driving fatigue and improve comfort.
Automobile body, chassis
Since carbon fiber reinforced polymer composites have sufficient strength and stiffness, they are suitable for making lighter materials for main structural components such as body and chassis. The application of carbon fiber composite materials is expected to reduce the weight of the car body and chassis by 40% to 60%, which is equivalent to 1/3 to 1/6 of the weight of the steel structure. The Materials Systems Laboratory in the UK studied the weight loss effects of carbon fiber composites. The results showed that the weight of the carbon fiber reinforced polymer material was only 172 kg, while the weight of the steel body was 368 kg, about 50% of the weight reduction. When the production capacity is below 20,000 vehicles, the cost of producing a composite body using the RTM process is lower than that of a steel body. Toray has established a technology for molding an automobile chassis (front floor) within 10 minutes using carbon fiber reinforced plastic (CFRP). However, due to the high cost of carbon fiber, the application of carbon fiber composite materials in automobiles is limited, and it is only used in some F1 racing cars, high-end cars, and small-volume models, such as the bodies of BMW’s Z-9 and Z-22, M3 series Roof and body, G&M’s Ultralite body, Ford’s GT40 body, Porsche 911 GT3 load-bearing body, etc.
Fuel storage tank
The use of CFRP can achieve lightweight pressure vessels while meeting this requirement. With the development of ecological vehicles, the use of CFRP materials to make fuel tanks for hydrogen fuel cell vehicles has been accepted by the market. According to information from the Fuel Cell Seminar of the Japan Energy Agency, 5 million vehicles in Japan will use fuel cells in 2020. The American Ford Humerhh2h off-road vehicle has also begun to use hydrogen fuel cells, and it is expected that hydrogen fuel cell vehicles will reach a certain market size.
The above is the main application content of carbon fiber auto parts introduced to you. If you don’t know anything about it, please come to consult our website, and we will have professional people to explain it to you.
Post time: Mar-21-2023