Pre-PET Graft Modification of Nano-ZrO_2 and Its Effect on Mechanical Property of PC Composites  

作　　者：李立 施利毅 曹绍梅 冯欣 张雨 

机构地区：[1]College of Sciences,Shanghai University [2]College of Material Science and Engineering,Shanghai University [3]College of Environmental and Chemical Engineering,Shanghai University

出　　处：《Journal of Donghua University(English Edition)》2009年第1期40-45,共6页东华大学学报（英文版）

基　　金：Innovative Team Project of Science and Technology Commission of Shanghai, China(No.06DZ05902)

摘　　要：Nano-ZrO2 particles were modified by poly(ethylene terephalate) prepolymer(pre-PET) via polycondensation.FT-IR,TEM,and TGA results showed that pre-PET was successfully grafted on the surface of nano-ZrO2particles.Compared to the original nano-ZrO2,the grafted nano-ZrO2 had better compatibility with the polycarbonate(PC) matrix and could be dispersed more homogeneously in PC.Hence,interfacial adhesion between ZrO2 and PC was enhanced.The mechanical properties of the resultant PC/nano-ZrO2 composite like tensile strength and notched impact strength were greatly improved.Calculated respectively from tensile yield stress PC/nano-ZrO2 composites,the interfacial interaction parameter B was employed to quantitatively characterize the effective interfacial interaction between the nano-ZrO2 and PC matrix.Nano-ZrO2 particles were modified by poly（ethylene terephalate） prepolymer（pre-PET） via polycondensation.FT-IR,TEM,and TGA results showed that pre-PET was successfully grafted on the surface of nano-ZrO2particles.Compared to the original nano-ZrO2,the grafted nano-ZrO2 had better compatibility with the polycarbonate（PC） matrix and could be dispersed more homogeneously in PC.Hence,interfacial adhesion between ZrO2 and PC was enhanced.The mechanical properties of the resultant PC/nano-ZrO2 composite like tensile strength and notched impact strength were greatly improved.Calculated respectively from tensile yield stress PC/nano-ZrO2 composites,the interfacial interaction parameter B was employed to quantitatively characterize the effective interfacial interaction between the nano-ZrO2 and PC matrix.

关 键 词：NANO-ZRO2 composite-particles mechanical property GRAFT poly （ethylene terephalate ） prepolymer 

分 类 号：TQ342.2[化学工程—化纤工业] TB383[一般工业技术—材料科学与工程]