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合成了含４，４＇－二羟基联苯和４，４＇－二羟基二苯基甲烷结构的两种液晶共聚酯ＢＰ－ＬＣＰ和ＢＰＭ－ＬＣＰ，将其与聚砜共混制备原位复合材料。探讨了共混物在Ｈａａｋｅ转矩流变仪中密炼时转矩的变化；通过毛细管挤出考察了液晶共聚酯分子结构、分子量及含量变化对原位复合材料流变性能的影响，由流动曲线获得这一类原位复合材料熔体大部分表现为假塑料性非牛顿型流体，但含低分子量ＢＰ－ＬＣＰ２０％和ＢＰＭ－ＬＣＰ３０％的两种原位复合熔体均表现出特殊的流变性：较低剪切速率时为胀塑性流体，较高剪切速率时为假塑性流体。分析了这种现象与液晶共聚酯结构形态的关系。并讨论了增强组份和基体的相容性对原位复合材料流变性的影响。
Two kinds of liquid crystal copolyester BP-LCP and BPM-LCP containing 4,4’-dihydroxybiphenyl and 4,4’-dihydroxydiphenylmethane were synthesized and blended with polysulfone to prepare in situ Composites. The change of torque of the in-situ composites was investigated. The influence of the molecular structure, molecular weight and content of the liquid crystal copolyester on the rheological properties of the in-situ composites was investigated by capillary extrusion. Flow curves The in-situ composite melts obtained for this type are mostly pseudoplastic non-Newtonian fluids, but both in-situ composite melts containing low molecular weight BP-LCP 20% and BPM-LCP 30% Rheology: Expanded plastic fluid at lower shear rates and pseudoplastic fluid at higher shear rates. The relationship between this phenomenon and the structure of liquid crystal copolyester was analyzed. The influence of the compatibility of reinforcing components and matrix on the rheological properties of in-situ composites was also discussed.