【摘要】 采用超细聚四氟乙烯(PTFE)粉末作为减摩功能填料,碳纤维(CF)作为增强材料,制备了CF-PTFE/PA6复合材料;利用60Co-γ射线对该复合材料进行了辐射改性,对复合材料的力学性能和摩擦学性能进行了研究,并采用SEM观察了该复合材料冲击断面的表面形貌。结果表明:添加8%的PTFE和13%的CF的CF-PTFE/PA6复合材料不仅具有较好的力学强度和摩擦学性能,而且经过120 kGy辐射处理后,其弯曲强度、拉伸强度和冲击强度分别提高了9.9%、7.9%和11.7%。更多还原

【Abstract】 Carbon fiber-polytetrafluoroethylene/polyamide 6(CF-PTFE/PA6) composites were prepared using ultrafine PTFE powder as a friction-reducing function filler,and CF as a reinforcement.The CF-PTFE/PA6 composites were irradiated by 60Co-γ rays.The mechanical and tribological properties of the composites were studied,and the impact fracture surface morphology of the composites was observed by SEM.The results show that CF-PTFE/PA6 composites with mass fraction of 8% PTFE and 13% CF not only exhibited better mechanical strength and tribological properties,but also possessed higher bending strength,tensile strength and impact strength,which increased by 9.9%,7.9% and 11.7%,respectively,after optimum adsorbed dose of 120kGy.更多还原