Rheological, dynamic mechanical and thermal properties of reactive thermotropic liquid crystalline polymer/unsaturated polyester/glass fiber hybrid composites

摘要：

Unsaturated polyester (UP) reinforced with self-synthesized reactive thermotropic liquid crystalline polymer (TLCP)-methacryloyl copolymer (LCMC) and glass fiber (GF), the hybrid composites of UP/GF/LCMC are prepared by molding technology. The dynamic mechanical analysis (DMA) indicate that storage modulus and glass transition temperature (Tg) of hybrid composites increase significantly because of the addition of LCMC. The thermal expansion coefficient of composites containing 5％ LCMC decrease by about 30％ than that of composites without LCMC. Rheological performance analysis show that the composites under melting stage are non-Newton liquid of shear thinning, and the processability of composites with 5％ LCMC can be improved effectively. The crystal behavior analysis of LCMC/ UP blend is investigated by X-ray diffraction (XRD) and polarizing optical microscope (POM). The results show that the crystal phase and texture structure of LCMC still exist in the blends after blending with UP.

关键词： thermotropic liquid crystalline polymer unsaturated polyester hybrid composites dynamic mechanical and thermal property rheological property

作者: C.Wei X.B.Yu J.Lv

作者单位: Key laboratory of new processing technology for nonferrous metals and materials，Guilin University of Technology, ministry of education, 541004, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Physical and Numerical Simulation of Materials Processing(第五届材料与热加工物理模拟及数值模拟国际会议)

会议地点: 郑州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）