γ射线辐射对CF-PTFE/PA6复合材料性能的影响  

γ-ray radiation effect on properties of CF-PTFE/PA6 composites

作　　者：杨明成[1,2,3] 钟磊 朱德荣 李召朋[3] 吴国忠[1,2] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]浙江中科辐射高分子材料研发中心,嘉善314100 [3]河南省科学院同位素研究所有限责任公司,郑州450015

出　　处：《复合材料学报》2011年第4期7-11,共5页Acta Materiae Compositae Sinica

基　　金：嘉善县科技创新种子资金(2009B15);郑州市二七区科技局攻关项目(20095123)

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%。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.

关 键 词：PA6 PTFE 碳纤维 复合材料 辐射 

分 类 号：TB332[一般工业技术—材料科学与工程] TL99[核科学技术—核技术及应用]