Polyamide 12 filling long carbon fiber compounds high impact resistance for car parts

Long Carbon Fiber

Carbon fiber has many excellent properties: high axial strength and modulus, low density, high specific performance, no creep, super high temperature resistance in non-oxidizing environments, good fatigue resistance, thermal and electrical conductivity, small coefficient of thermal expansion and anisotropy, corrosion resistance, and good X-ray transmission. It also offers excellent electromagnetic shielding. Compared with traditional glass fiber, carbon fiber has over 3 times the Young's modulus, and about 2 times that of Kevlar fiber. Insoluble in organic solvents, acids, and alkalis, it exhibits outstanding corrosion resistance.

To reduce costs, carbon fiber can be mixed with relatively inexpensive nylon to form composite materials with good performance. This ensures carbon fiber reinforced nylon will occupy a significant place in composite material applications.

Nylon itself is an engineering plastic with excellent performance, but suffers from moisture absorption and poor dimensional stability. Early research, even before the 1970s, introduced carbon fiber or other fibers to reinforce nylon, improving its strength, hardness, heat resistance, dimensional accuracy, wear resistance, and damping performance. Compared with glass fiber reinforcement, carbon fiber reinforced nylon (CF/PA) performs better. For 3D printing, SLS technology is the most suitable method for producing CF/PA composites.

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