Carbon fiber has the characteristics of light weight, high tensile strength, wear resistance, corrosion resistance, creep resistance, electrical conductivity, heat transfer, etc. Excellent reinforcement for high strength nylon material. Carbon fiber composite materials can be divided into two categories: long (continuous) fiber reinforced and short fiber reinforced. From prepreg resin to molding processing, from short fiber blended plastic injection processing to lamination molding, we have accumulated a lot of successful experience in the production of carbon fiber composite materials and products. It is generally believed that long (continuous) fibers have the advantages of high strength and high toughness, and chopped fibers have the characteristics of good processability. Therefore, it is the development direction of carbon fiber composite materials to improve the molding process of long carbon fiber composite materials and further improve the mechanical properties of short carbon fiber composite materials.
According to the length of carbon fiber, surface treatment method and dosage, conductive materials with excellent comprehensive properties and different conductive properties can also be prepared, such as antistatic materials, electromagnetic shielding materials, planar heating element materials, electrode materials, etc. Carbon fiber reinforced nylon materials have developed rapidly in recent years, because nylon and carbon fiber are materials with excellent performance in their respective fields, and their composite materials comprehensively reflect the advantages of the two. The strength and rigidity are much higher than those of unreinforced nylon, and the high temperature creep is small. , The thermal stability is significantly improved, the dimensional accuracy is good, the wear resistance is excellent, and the damping is excellent. Compared with glass fiber reinforced nylon, it has better comprehensive performance.
Carbon fiber/nylon composite material has excellent performance of replacing metal, and is light in weight, high toughness, easy to process, and its application range covers almost all fields of the national economy.
1. Automobile industry
Carbon fiber reinforced nylon composite materials are widely used in the automotive industry, mainly because of the excellent oil resistance, wear resistance and creep resistance of the above materials, and they have the advantage of light weight when replacing traditional metal materials. A variety of engineering plastics, including PA66, are gradually replacing the metal die-casting components of earlier automobiles, such as fuel tanks, after being reinforced by carbon fibers. In the United States, Western Europe and Japan, nylon is used in almost all parts of the car, such as engine parts, electrical parts and body parts. Carbon fiber reinforced nylon composites have strong fatigue resistance, which makes them suitable for the manufacture of synchronous drive gears for automobile internal combustion engines. German heavy-duty diesel engines use this material to manufacture gears, pipe joints and other parts.
2. Defense industry
The American Indiana Company has developed a PA66 composite material containing 40% carbon fiber, whose performance exceeds that of other high-strength materials currently used. This material can replace metals and is mainly used in the defense and aerospace fields. The US MX missile uses 40% carbon fiber reinforced PA66 instead of aluminum alloy to make missile engine components. Most of the barrels of the rocket launchers developed by the British Hunting Company are made of carbon fiber reinforced nylon.
3. Stationery
Japan's Osaka company plans to use reactive injection to produce nylon / long carbon fiber composite materials to meet the requirements of the production of stationery. The specific method is as follows: firstly, the nylon monomer is mixed with the pre-placed continuous fibers, and then polymerization is initiated during injection molding to form it. This method is suitable for manufacturing thin-walled products. The company plans to use it to make tennis rackets and golf clubs, as well as helmets, car bumpers and robotic arms.
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