本文用扫描电镜分析复合材料断口形貌的方法,研究了基体性能、固化过程中的加压时机对复合材料力学性能的影响。并分析了断口形貌与力学性能的内在联系。研究结果可供设计复合材料参考。 In this paper, the fracture morphology of the composite was analyzed by SEM, and the effect of the timing of pressurization on the mechanical properties of the composites was studied. The internal relations between fracture morphology and mechanical properties were analyzed. The results of the study can be used as a reference for the design of composite materials.