在拉应力条件下,测试了聚合物基体和单向玻璃纤维增强聚合物基复合材料的介电强度,探索了聚合物基体和玻璃纤维/聚合物复合材料的介电强度与拉应力的关系,提出并证明了聚合物基体的介电强度与拉应力呈负指数关系,复合材料中纤维与基体的界面是影响材料介电强度的主要因素。 Under tensile stress, the dielectric strength of polymer matrix and unidirectional glass fiber reinforced polymer matrix composites was tested. The relationship between dielectric strength and tensile stress of polymer matrix and glass fiber / polymer composites was investigated. It is proposed and proved that the dielectric strength and the tensile stress of the polymer matrix have a negative exponential relationship, and the interface between the fiber and the matrix in the composite material is the main factor affecting the dielectric strength of the material.