摘要
采用真空辅助RTM工艺制备了三维编织碳纤维增强环氧树脂 (C3D EP)复合材料 ,通过对树脂的粘度特性和固化特性的分析 ,确定了最佳的工艺参数。金相显微镜对复合材料微观结构的观察表明树脂对纤维的浸润良好。同时 ,还研究了该工艺制备的C3D EP复合材料的力学性能 ,结果表明随着纤维体积比的增加 ,复合材料的硬度、弯曲强度和冲击强度均提高 ,断口的扫描电镜观察表明复合材料的破坏方式是以脆性断裂为主。
A three-dimensionally braided carbon fiber reinforced epoxy resin(C_ 3D /EP) comosite was prepared by RTM with vacuum assistance process.The optimum processing parameters were determined with analysis on viscosity and curing characteristics of epoxy resin.The microstructures of C_ 3D /EP composites were observed by means of an optical microscope.It was found that epoxy had a good impregnation with carbon fibers.The mechanical properties of C_ 3D /EP composite were also studied,and the fracture surfaces were observed with a scanning electron microscope(SEM).The results show that the hardness,flexural strength,flexural modulus,and impact strength of C_ 3D /EP composite increase with carbon fiber volume fraction.Moreover,the C_ 3D /EP composites show a brittle fracture mode.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2004年第3期344-346,共3页
Journal of Materials Science and Engineering
基金
天津市重大科技攻关资助项目(0 1 31 1 1 71 1 )
