Nylon and carbon fiber are both excellent materials in the field of engineering plastics. The composite material comprehensively reflects the advantages of the two. For example, the strength and rigidity are much higher than that of unreinforced nylon, the high temperature creep is small, and the thermal stability is significantly improved. , Good dimensional accuracy and wear resistance. It has excellent damping and has better performance compared with glass fiber reinforced.
Therefore, carbon fiber reinforced nylon (CF/PA) composite materials have developed rapidly in recent years. At present, CF/PA composite materials at home and abroad are mainly made of short-cut or long carbon fiber reinforced PA6, PA66 and other matrixes. Short carbon fiber composite materials have good processability, while long carbon fiber composite materials have better mechanical properties.
Carbon fiber has the characteristics of light weight, high tensile strength, abrasion resistance, corrosion resistance, creep resistance, electrical conductivity, heat transfer, etc. Compared with glass fiber, the modulus is 3 to 5 times higher, so it is a way to obtain high rigidity and Excellent reinforcement material for high-strength nylon material. Carbon fiber composite materials can be divided into two categories: long (continuous) fiber reinforced and short fiber reinforced. The fiber length can vary from 300~400m to several millimeters. At present, it is generally believed that long (continuous) fibers have the advantages of high strength and high toughness, and chopped fibers have 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 to 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 performance and different conductivity 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 that of unreinforced nylon, and the high temperature creep is small. , The thermal stability is significantly improved, the dimensional accuracy is good, the abrasion resistance is excellent, and the damping property is excellent. Compared with the glass fiber reinforced nylon, it has a better overall performance
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