Preparation of Aramid Mica Composite Insulation Material

While mica papers are used as insulation material binders and reinforcement materials are needed to enhance the mechanical strength which might reduce insulation property of mica paper materials. In this paper aramid fibers and mica flakes are mixed to make composite paper insulation, both have the high strength, heat resistance of aramid fibers and high dielectric strength, corona resistance of mica flakes. When this composite material is preparing, process of mix pulp papermaking was chosen, combined with mica flake and aramid fiber modification. Prepared composite material has properties of high tensile strength, dielectric strength, heat resistance, softness, can be used as high quality insulation.