Regulation Method and Mechanism of Functionalized Modified Nano Filler on Electrical Properties of Epoxy Resin

The intrinsic properties of nanofillers and the properties of the filler-matrix interface layer are key factors affecting the electrical properties of epoxy composites. Functional modification of nanofillers can effectively regulate the interfacial interaction between the filler and the matrix, improve the modification effect of nanofillers on epoxy composites, and then achieve electrical properties such as dielectric, conductivity, and charge transport of epoxy composites. This chapter takes coupling agent modification, fluorination modification, and amination modification as examples to introduce the methods of functional modification of nanofillers, and studies the influence of functionalized nanofillers on the electrical properties of epoxy composites. The mechanism of filler functional modification to improve the insulation performance of epoxy composites was analyzed by combining microscopic characterization and molecular simulation. It provides new ideas and methods to improve the electrical properties of epoxy composites and expand the application of nano-modification technology in the field of insulating materials.