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本文分析了TLPC与PES及其共混物的流变特性和相容性,通过注塑和双螺杆共混物挤出拉伸来研究上述共混物的原位增强特性。结果表明,共混物粘度比TLCP和PES的粘度要低,液晶的加入有效地改善了加工性能;共混体系中液晶与PES几乎不相容;PES及其共混物的粘度较高,注塑性能较差,而比较适合于双螺杆共混挤出拉伸加工;液晶含量的增大使共混物熔体粘度下降,拉伸强度提高,脆性增大;随着熔体拉伸比的增大,复合丝拉伸强度大幅度提高,达到了良好的原位增强效果。
In this paper, the rheological properties and compatibility of TLPC and PES and their blends were analyzed. The in-situ reinforced properties of the blends were investigated by extrusion and extrusion of twin-screw blends. The results show that the viscosity of blends is lower than that of TLCP and PES. The addition of liquid crystal effectively improves the processing performance. The liquid crystal of PES is almost incompatible with PES. The viscosity of PES and its blends is high, Poor performance, and more suitable for twin-screw extrusion extrusion drawing processing; increased liquid crystal content of the blend melt viscosity decreased, tensile strength increased brittleness; as the melt draw ratio increases , The tensile strength of the composite yarn increased significantly, reaching a good in situ enhancement effect.