本文研究了两种热致液晶高聚物（ＴＬＣＰ）及与聚碳酸酯（ＰＣ）和聚醚砜（ＰＥＳ）原位复合材料的拉伸与弯曲性能。ＴＬＣＰ在基体中形成微纤增强相，使材料的性能成倍提高。增强效果依赖于工艺条件如料温、剪切速率、粘度等，它们强烈地影响原位复合材料的刚度和强度，傅里叶杠外光谱结果表明，ＴＬＣＰ与基体非完全相容，界面结合不佳，导致弯曲强度提高不明显。 In this paper, the tensile and flexural properties of two thermotropic liquid crystalline polymers (TLCP) and in situ composites with polycarbonate (PC) and polyethersulfone (PES) were investigated. TLCP in the matrix to form a micro-fiber reinforced phase, the performance of the material doubled. The enhancement effect depends on the process conditions such as material temperature, shear rate, viscosity, etc., which strongly affect the stiffness and strength of the in-situ composite. Fourier Fourier transform infrared spectroscopy results show that TLCP is not completely compatible with the matrix, Good, resulting in increased bending strength is not obvious.