UHMWPE/Kaolin复合材料的物性研究——机械性能、耐磨性及其相关关系  

Investigation of mechanical and wear properties of kaolin filled UHMWPE composites

作　　者：龚国芳[1] 杨华勇[1] 傅新[1] 漆宗能[2] 

机构地区：[1]浙江大学流体传动与控制国家重点实验室,浙江杭州310027 [2]中国科学院化学研究所工程塑料国家重点实验室,北京100080

出　　处：《浙江大学学报（工学版）》2003年第3期299-302,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(50005019);固体润滑国家重点实验室开放基金资助项目(9905).

摘　　要：按ASTM标准进行拉伸和缺口冲击强度试验,分析釜内聚合和机械混合两种方法制备的高岭土填充超高分子量聚乙烯基(UHMWPE/Kaolin)复合材料的机械性能,分别用MM200磨损试验机和MSH型腐蚀磨损试验机研究这两类复合材料的耐磨性.讨论UHMWPE/Kaolin的机械性能和耐磨性与制备方法和高岭土含量的关系.结果表明:UHMWPE/Kaolin的机械性能与制备方法显著相关,由于高度细化和均匀分散的高岭土颗粒的增强作用及较强的界面结合强度,釜内聚合方法制备的UHMWPE/Kaolin的综合性能比熔融机械混合方法制备的成分相同的复合材料的明显要好.进一步的数据分析发现,UHMWPE/Kaolin的耐磨性与机械强度综合指标有显著的相关关系.The tensilestrength and the notch impact strength of two kinds of kaolin filled UHMWPE based composites, which were prepared by melt mixing and polymerization respectively, were tested according to the ASTM standards. The mechanical performance of the composites was analyzed.An MM200 abrasion tester and an MSH erosionwear tester were employed to test the sliding and erosion wear resisting properties of the composites respectively.The relationships among the mechanical properties, the wear behaviors,the filling methods of kaolin,and the content of filled kaolin particles were discussed thoroughly.It was found that the filling method obviously affected the properties of the composites.UHMWPE/Kaolin composites prepared by polymerization had much better properties than the ones prepared by melt mixing due to the reinforcement of the kaolin particles which were highly broken and evenly dispersed during the polymerization.There very remarkable dependency relation between the mechanical property indexes and the wear rate.

关 键 词：UHMWPE/Kao1in复合材料 物理性能 机械性能 耐磨性 相关关系 高岭土 超高分子量聚乙烯 

分 类 号：TB332[一般工业技术—材料科学与工程]