γ射线辐射对CF PTFE/PA6复合材料性能的影响

基金项目: 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)

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

1.
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
2.
Zhejiang Sinco Radiation Polymer Research Center, Jiashan 314100, China;
3.
Isotope Institute Co. Ltd., Henan Academy of Sciences, Zhengzhou 450015, China

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%。
- PA6 /
- PTFE /
- 碳纤维 /
- 复合材料 /
- 辐射
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 120 kGy.
- polyamide 6 /
- PTFE /
- carbon fiber /
- composites /
- radiation