热致液晶聚合物微纤与碳纤维对聚醚砜的混杂增强

A HYBRID POLYETHERSULFONE COMPOSITE REINFORCED BY CARBON FIBERS AND LCP FIBRILS

热致液晶聚合物微纤与碳纤维对聚醚砜的混杂增强张洪志王育立何嘉松（中国科学院化学研究所工程塑料国家重点实验室北京１０００８０）关键词热致液晶聚合物，碳纤维，混杂复合材料由两种或两种以上纤维增强同一种基体所得到的混杂纤维复合材料，不仅保留了单一纤维...

Based on factors favoring the fibrillation of thermotropic LCP(TLCP) in resin melts,the spinnability of TLCP and the viscosity ratio of TLCP to matrix resins,a hybrid polyethersulfone composite has been injection molded.This composite is reinforced by CF with diameters of microns and TLCP fibrils with diameters of 50～300 nanometer and aspect ratios up to 30.All the decreased apparent viscosity of melts,the increased CF aspect ratios in the matrix and the enhanced tensile properties of molded samples show that the processability,the reinforcing effect and the performances of this composite have been improved by the added TLCP.These results indicate that a combination of the concept of in situ composite and the principle of hybrid reinforcing with reinforcements of different diameters is effective for the processing and application of advanced engineering plastics.