摘要
利用高能射线共辐照接枝,在环氧树脂/丙酮溶液中对腰形截面碳纤维表面进行了处理.通过扫描电子显微镜（SEM）观察了纤维的表面及复合材料断口形貌的变化;利用浸润性测试方法分析了纤维表面能的变化;采用X射线光电子能谱（XPS）方法分析了纤维表面化学元素及官能团的组成;通过层间剪切强度（ILSS）表征了纤维增强环氧树脂复合材料的界面性能.结果表明,处理后碳纤维表面沟槽变深,氧元素和碳元素百分含量比（O/C）提高,表面能极性分量增加,ILSS最大可提高18.3%,达到91.3MPa.
The high efficient, energy-saving and environment-friendly technology of simultaneous γ-ray radiation grafting was used to improve the surface property of carbon fibers （CF） which were treated in epoxy/acetone solutions of different concentrations. The CF samples treated were irradiated by ^60Co γ-rays to 300kGy at a dose rate of 4.8kGy/h. The scanning electron m/croscopy （SEM） measurement revealed an obvious morphology change in the surface of grafted CF. The X-ray photoelectron spectroscopy （XPS） analysis showed that the O/C ratio and quantity of oxygen functional groups were enhanced efficiently by the radiation graft epoxy. The wettability test indicated that the surface energy of CF was improved. The inter-laminar shear strength （ILSS） testing showed that the ILSS of the composites reinforced by grafted CF increased approximately by 18.3 %.
出处
《高技术通讯》
CAS
CSCD
北大核心
2007年第9期938-942,共5页
Chinese High Technology Letters
基金
国家自然科学基金重点项目（50333030）资助.
关键词
腰形截面碳纤维
环氧树脂
辐照接枝
表面改性
kidney section carbon fiber, epoxy, irradiation grafting, surface modification
