摘要
本文对气相表面处理碳纤维的新工艺进行了系统研究。处理后的碳纤维强度、模量不下降,且其表面能、表面化学官能团含量明显增加;表面微晶结构变小,与环氧树脂复合后,层间剪切强度(LLSS)提高47%左右。本文还对复合材料断口的形态结构进行了分析,说明这种表面处理方法能有效改善碳纤维增强环氧树脂复合材料(CFRP)的界面粘结。
This paper has systematiclly studied the new technology of gaseous surfacetreatment of carbon fibers.After treatment,the tensile strength and tensile modulus do not de-crease,but its surface free energy and functional groups increase obviously and surfacecrystallites get smaller and the LLSS of composites increase by 47%.The morphology offractural section is studied by SEM and the results indicate that the new technology of surfacetreatment is effective in strengthening the adhesion of fibers and matrix.
关键词
碳纤维
表面处理
复合材料
界面
carbon fiber
surface treatment
composite
interface
