高介电聚氨酯基复合材料的制备与性能研究  

Preparation and Properties of Polyurethane Based Composite with High Dielectric Constant

作　　者：陈涛[1] 王经文[1] 魏楠[1] 吴聪聪[1] 李淑琴[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院材料科学与工程系,江苏南京211100

出　　处：《广州化工》2010年第4期45-47,共3页GuangZhou Chemical Industry

基　　金：江苏省自然科学基金(BK2009380);航空科学基金(2006ZF52060)

摘　　要：以聚氨酯弹性体(Polyurethane Elastomers,PUE)为基体,以具有高介电常数的铜酞菁齐聚物(Copper phthalocyanine oligomer,CuPc)为填料,并且为改善两者的相容性,通过化学方法将部分CuPc接枝到聚合物链上,制备了具有高介电常数的聚合物基纳米复合材料。在100Hz时,CuPc含量为15wt%的纳米复合材料的介电常数高达440左右,是PUE与CuPc简单共混物的8倍多。介电常数的迅速提高归功于CuPc粒子在纳米复合材料中分散性的改善与粒径的大大减小导致的复合体系中界面交换耦合效应的显著增加。High dielectric constant polymer- based nanocomposites consisting of polyurethane elastomer （PUE） and copper phthalocyauine oligomer （CuPc） were fabricated which was partially grafted onto the polyurethane chains to improve the compatibility between two components of the nanocomposites. At 100 Hz, the dielectric constant of the nanocomposite with 15wt% CuPc was as high as 440, which was 8 times larger than that of the simple blend of PUE and CuPc. The significant enhancement of the dielectric constant can be attributed to the remarkably strengthened exchange coupling effect which was caused by the improved dispersibility and greatly reduced the particle size of CuPc in the nanocomposite.

关 键 词：高介电常数 聚氨酯弹性体 铜酞菁齐聚物 纳米复合材料 

分 类 号：TQ433.432[化学工程]