Development and Performance Analysis of High Thermal Conductivity Epoxy Resin for Dry-type Transformer Casting

Abstract

The purpose of this paper is to provide a preparation method of epoxy resin with high thermal conductivity transformer casting. Adding metal oxide and nitride such as silicon nitride, boron nitride, aluminum nitride and so on into epoxy resin, so that the interface structure of the epoxy resin can be effectively changed, the thermal conductivity of the filling material is greatly improved. It greatly avoids the influence of temperature on its internal parameters, so that the transformer can works smoothly. However, the addition of thermal conductive fillers will affect its dielectric properties (such as Insulation strength, dielectric loss and conductivity characteristics) and mechanical stability. This paper solves the problem of how to improve the thermal conductivity and ensure the dielectric and mechanical properties.