PBT冲击断口弧形形貌研究  

Study on Arc Fractography of PBT Impact Fracture

作　　者：都佩华[1] 于杰[1] 鲁圣军[1] 蒋冠森[1] 薛斌[1] 

机构地区：[1]国家复合改性聚合物材料工程技术研究中心

出　　处：《塑料科技》2008年第2期90-93,共4页Plastics Science and Technology

基　　金：贵州火炬计划项目(黔科合20008005);贵州省科学基金项目(黔科基合2003072)

摘　　要：分析了不同温度下聚对苯二甲酸丁二醇酯(PBT)的断口形貌,总结了PBT断口弧形条纹的形貌特征,定量研究了弧形条纹数量、特征区尺寸及表面粗糙度的变化规律,并对其形成机理进行了探讨。结果表明:PBT断口弧形条纹可分为脆性弧形条纹和韧性弧形条纹;随温度的升高,PBT断口弧形条纹的数量越来越少,弧形条纹间的平均距离越来越大,弧形形貌的平均粗糙度逐渐减小。The fractography of PBT at different temperatures was analyzed, the fractography features Of PBT fracture arc stripe were concluded, the total number, dimension of feature zone and roughness of arc stripe were studied in quantification, the mechanism of arc pattern was also discussed. The results show： PET fracture arc stripe can be divided into brittle and ductile stripe; with the increase of temperature, the number and the average roughness of PBT fracture arc stripe decrease gradually, but the average distance of it increases.

关 键 词：聚对苯二甲酸丁二醇酯 冲击断裂 断口形貌 弧形条纹 粗糙度 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]