ZnCl_2改性低熔点PA6的结晶及力学性能研究  

Crystallization and Mechanical Properties of ZnCl_2 Modified PA6

作　　者：罗小艳[1] 雷文彬[2] 唐青[1] 周龙芬[1] 鲁圣军[1,3] 

机构地区：[1]贵州大学材料科学与冶金工程学院,贵州贵阳550025 [2]贵州大学农学院,贵州贵阳550025 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《现代塑料加工应用》2017年第2期22-24,共3页Modern Plastics Processing and Applications

基　　金：贵州省教育厅自然科学研究项目(黔教合KY字[2013]158);贵州省教育厅研究生卓越人才计划项目(黔教研ZYRC字[2013]006号);贵州大学SRT字(2015)148号

摘　　要：利用熔融共混法制备了不同氯化锌(ZnCl_2)用量下的聚酰胺6(PA6)/ZnCl_2复合材料,分别采用差示扫描量热仪(DSC)、动态力学分析仪(DMA)、电子拉伸机等对不同ZnCl_2用量下PA6/ZnCl_2复合材料的结晶行为及力学性能进行了研究。结果表明:随着ZnCl_2用量的增加,PA6/ZnCl_2复合材料的拉伸强度和弯曲强度均呈现先增大后减小的趋势,当ZnCl_2质量分数为5%时,复合材料的拉伸强度和弯曲强度分别达到最大值70.39 MPa和64.71 MPa,较纯PA6分别增加了7.5%和降低了28%;随着ZnCl_2用量的增加,PA6/ZnCl_2复合材料的玻璃化转变温度逐渐增大,结晶能力下降,结晶度减小,结晶度由原来的34%变为13%。PA6/ZnCl2 composites with different ZnCl2 contents were prepared by melt blending method. PA6/ZnCl2 composites were characterized by differential scanning calorimetry （DSC）, Dynamic mechanical analyzer（DMA）and electronic tensile machine. The crystallization behavior and mechanical properties of PA6 / ZnCl2 composites with different ZnClz contents were studied. The results show that tensile strength and flexural strength of PA6/ZnCl2 composites increase first and then decrease with the increase of ZnCl2 content. When the mass fraction of ZnCl2 is 5% ,the tensile strength and flexural strength of PA6/ZnCl2 composites respectively reach the maximum value of 70. 39 MPa and 64. 71 MPa, compared with pure PA6 increased by 7. 50/oo and decreased by 28%. With the increasing of ZnCl2 content,the glass transition temperature of PA6/ZnCl2 composite gradually increases,while crystallization ability and the crystallinity decreases. The erystallinity decreases from 34% to 13%.

关 键 词：聚酰胺 氯化锌 结晶 力学性能 

分 类 号：O633.22[理学—高分子化学] TB332[理学—化学]