Effect of injection process on mechanical performance of carbon-fiber-reinforced polyamide 10T composites

Abstract

Abstract: Carbon-fiber （CF）-reinforced polyamide 10T （PA10T） composites were prepared by using PA10T as a matrix， and the effect of parameters for injection molding process on the mechanical properties of the composites were investigated. Based on the analysis of the average fiber-retention length of each samples， the optimal fiber-retention length for the PA10T/CF composites was about 295 μm. The optimized injection parameters were determined to be an injection temperature 330 oC， an injection pressure of 50 % corresponding to the maximum injection pressure， an injection rate of 70 % corresponding to the maximum injection rate， a maintaining pressure of 50 MPa， and a module temperature of 30 oC. Scanning electron microscopy showed that the cross-section of the composites with different contents of CF presented ductile fracture， and the carbon fibers were uniformly dispersed in the matrix when the optimized process parameters were adopted.

Key words: polyamide 10T, carbon fiber, injection molding process, fiber length

References

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