Nanocomposite material for inhibiting space charge by regulating and controlling micro scale structure through electric field

The invention discloses a preparation method of a nanocomposite material for inhibiting a space charge by regulating and controlling a micro scale structure through an electric field and relates to preparation and modification of a nano/polymer composite material. The invention aims at solving the problems that the migration of a trapped charge is retarded and the attenuation rate is low after short circuit due to randomness of arrangement of lamellar montmorillonite (MMT) in low density polyethylene (LDPE) in an MMT/LDPE composite material. The method comprises the following steps: firstly, drying the MMT/LDPE composite material, then putting the dried MMT/LDPE composite material in a plate vulcanizing machine and carrying out compression molding to obtain a lamellar sample; secondly, setting up an electrical field regulation and control experimental platform; thirdly, carrying out temperature rise on the sample, and regulating and controlling the sample in a molten state by applying pressure intensity; four