Relationship Between Porosity and Dielectric Constant and Tensile Strength of Insulating Paper

Abstract

It is found that when the structural properties of insulating paper are changed, its electrical properties also change significantly, but the mechanism is not clear, which makes us unable to choose the best structural parameters. Therefore, this paper starts from the porosity structure parameter to explore its influence on the dielectric constant and tensile strength of insulating paper. The results show that with the increase of the porosity of the insulating paper, the fiber content in the insulating paper decreases, so the dielectric constant and tensile strength decrease. In addition, the smaller the average pore size of the insulation paper and the smaller the matrix density of the fiber, the smaller the dielectric constant will be even the porosity is close; The higher the matrix density of insulation paper is, the higher the tensile strength is.