Study of Modified Wollastonite Toughening Epoxy Resin
Epoxy resin is an important and widely used thermosetting material, but its toughness and fatigue resistance is limited. In order to improve the toughness of epoxy resin the surface modified wollastonite was used as toughening agent. The modification effect of stearic acid and two silane coagents on wollastonite were compared and then the contents of modified wollastonite on mechanical properties were studied. The results indicated that the stearic acid has best modification effect on wollastonite, the maximum contact angle of modified surface is 140 degree. The toughness of epoxy resin composite was enhanced significantly. While the content of wollastonite modified by stearic acid is 10wt％ of epoxy resin, the tensile strength and impact strength increased by 47.79％ and 47.95％ respectively. SEM morphology of impact fracture suggests the compatibility of modified wollastonite with epoxy resin was improved.
epoxy resin wollastonite surface modification touchening
WANG XiLin YI HongLing LIN Heng ZHENG BaiCun
Advanced Sports Materias R&D Center of East China University of Science and Technology,Shanghai,200237
国际会议
天津
英文
1-9
2011-10-26（万方平台首次上网日期，不代表论文的发表时间）