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本文着重研究了纤维含量和排列方向对环氧/单向玻璃纤维复合层板介电性能的影响。结果表明,纤维与施加电场方向的改变,将导致复合层板电击穿强度发生变化,其夹角越大层板承受电击穿强度越高.纤维含量增加,其单向纤维复合层板的介电性能下降。本文对单向纤维复合层板建立了亚微观介电模型,且在此基础上,对其电击穿强度,介电常数与纤维方向和纤维含量的关系进行了理论预测,其理论值与实验值有较好的吻合性。
This article focuses on the influence of fiber content and orientation on the dielectric properties of epoxy / unidirectional fiberglass laminates. The results show that the change of the direction of the fibers and the applied electric field will lead to the change of the electric breakdown strength of the composite laminate, and the larger the included angle is, the higher the breakdown withstand strength of the laminate is and the higher the fiber content is. The unidirectional fiber composite laminate Dielectric properties decline. In this paper, a submicroscopic dielectric model has been established for unidirectional fiber composite laminates. On the basis of this, theoretical predictions have been made on the relationship between the electric breakdown strength, dielectric constant and fiber orientation and fiber content. The theoretical values and experimental results Value has good agreement.