混合液晶与尼龙1010三元共混物的研究  

Studies on Combined Liquid Crystalline Polymers/Nylon1010Ternary Blends

作　　者：王尚尔[1] 张宏放[1] 莫志深[1] 竺朝山 卢丽云 

机构地区：[1]中国科学院长春应用化学研究所高分子物理开放实验室,北京市化工研究院

出　　处：《应用化学》1995年第4期27-31,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金和高分子材料工程国家重点实验室资助项目

摘　　要：采用ＤＳＣ、ＰＯＭ、ＳＥＭ及力学性能测试，研究了不同对羟基苯甲酸（ＰＨＢ）和对苯二甲酸乙二醇酯（ＰＥＴ）含量的液晶共聚酯ＰＥＴ４０／ＰＨＢ６０（ＬＣＰＩ）和ＰＥＴ３０／ＰＨＢ７０（ＬＣＰ２）的共混物与尼龙１０１０为基体的三元共混体系，结果表明，液晶共混物的力学性能比单组分有明显提高，通过改变混合液晶中两种组分的含量可调节其加工温度与粘度，从而满足了与尼龙１０１０共混的加工窗口要求。混合液晶的加入对尼龙１０１０的结晶与熔融行为无多大的影响。因缺乏必要的拉伸流动，共混物中液晶相取向较差，力学性能提高不明显．Blends of two liquid crystalline copolyesters(LCP:for LCP1 PET/PHB=40/60,for LCP2 PET/PHB=30/70)and its ternary blends containing nylon1010 as the matrix werestudied by using DSC,POM,SEM and mechanical tests. The results indicated that the me-chanical properties of LCP blends were improved substantially and their melt viscosity andflow temperature could be modified by changing the composition of individual LCP so as tornatch the“processing window”of the matrix in making in-situ composites.Neither a signifi-cant improvement in mechanical properties nor the melting and crystallization behavior of ny-lon1010 was observed after blending, which was explained in terms of poor miscibility andorientational deformation of LCP.

关 键 词：液晶 尼龙 三元共混物 结晶 力学性能 

分 类 号：O753.2[理学—晶体学]