Method for preparing high-performance inorganic/organic composite multilayer dielectric film by surface coating process and application thereof

Abstract

The invention relates to a method for preparing a high-performance inorganic / organic composite multilayer dielectric film by a surface coating process. According to the process, bonding agents, functional particles, dispersing agents, anti-foaming agents and the like are used and are proportioned; an obtained material is coated onto the surface of various high-molecular polymer films; the coatinglayer thickness is controllable; the functional inorganic particles comprise barium titanate, zirconium doped barium titanate, lead zirconate titanate, titanium dioxide, aluminum oxide, silicon dioxide, boron nitride, copper calcium titanate and the like; the particle size is from the nanometer grade to the micrometer grade. The multilayer film can be formed by two layers or three layers; one layer is a pure polymer film; the other one layer or two layers are inorganic / organic composite layers; the composite layers are positioned on the surface of the pure polymer layer. The high-performance multilayer dielectric film obtained by using the method has excellent dielectric performance, polarization energy storage characteristics, heat conduction performance, heat resistant performance and the like; a novel material is provided for the high-performance energy storage film capacitor; the method can be widely applied to the fields of strong current and weak current products, new energy source automobiles, electromagnetic ejection pulse devices and the like.

Description

technical field [0001] The invention belongs to the field of new energy materials for high-performance capacitor energy storage, and relates to a method for preparing a high-performance inorganic / organic composite multilayer dielectric film by a surface coating process and its application. Specifically, it refers to new multilayer dielectric thin film materials prepared by polymer thin film layers and composite material coating layers and the wide application of such multilayer thin film materials in the field of capacitor energy storage new energy. Background technique [0002] With the continuous increase of energy demand and the continuous consumption of fossil fuels, the problems of improving the efficiency of traditional energy utilization and expanding the use of new energy have become increasingly prominent. Energy storage capacitors have the advantages of high energy storage density, fast charge and discharge speed, anti-cycle aging, suitable for extreme environments...

AI Technical Summary

Problems solved by technology

At present, polypropylene roll film is usually used to pour epoxy insulating resin directly as an energy storage capacitor, but this has certain limitations, and the dielectric constant of polypropylene film is about 2.2, although its breakdown strength is relatively high, about More than 500kV / mm, but in the case of such a low dielectric coefficient, it affects its application range as a capacitor to a certain extent

Therefore, the current preparation of thin film materials with high dielectric constant, high breakdown strength (500kV / mm), high thermal conductivity and heat resistance is a huge challenge in this field

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