液晶嵌段共聚物对PC/TLCP共混体系相容作用的研究  

STUDY ON THE COMPATIBILITY OF LIQUID CRYSTALLINE BLOCK COPOLYMER IN PC/TLCP BLENDS

作　　者：杜新宇[1] 李斌[1] 刘德山[1] 周其庠[1] 

机构地区：[1]清华大学化工系高分子研究所

出　　处：《高分子材料科学与工程》1999年第4期154-157,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金;国家教委博士点基金

摘　　要：利用热致液晶高分子（ＴＬＣＰ）ＰＥＴ／６０ＰＨＢ与聚碳酸酯（ＰＣ）的多嵌段共聚物作为相容剂，研究了ＰＣ与该ＴＬＣＰ共混体系的力学性能、热性能、形貌及织构。研究表明，ＰＣ／ＴＬＣＰ二元共混物的相容性很差，ＴＬＣＰ在加工条件下不能形成分散于基体中的具有一定长径比的微纤，得到材料的力学性能较ＰＣ基体有所下降。相容剂的加入明显的改进了体系的相容性，表现在三元共混物的力学性能提高、微观ＴＬＣＰ粒子的直径变小，两相界面模糊。In this paper, the morphology, the mechanical properties and thermal properties of PC/TLCP blends were studied. There are not good LCP fibrils in the PC matrix, and the mechanical properties of blends are lower than PC when blend the two materials. Adding the PC b TLCP block copolymer into the system can improve the mechanical properties. The diameters of LCP spheres become small and the inter face between PC and TLCP become blurred. These mean that the compatibility of PC with the TLCP is improved by the liquid crystalline block copolymer.

关 键 词：聚碳酸酯 液晶 共聚物 相容性 热致液晶高分子 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业] O631.31[理学—高分子化学]