Method for preparing fully organic high-dielectric copolymers with side chains containing polyaniline chain segments

Abstract

The invention provides a method for preparing a series of fully organic high-dielectric copolymer materials with side chains containing polyaniline chain segments, which is simple and has strong operability. A method for radical polymerization is used to solve the problem of separation existing between fillers and polymer substances and caused by a simple physical blending method, thereby improving the dielectric constants of the materials. Toluene is used as a reactive solvent, polyaniline mixed with phenylethylene and phenylethylene sulfoacid is used as a monomer for radical polymerization reaction, and then a series of copolymers containing different polyaniline mass fractions can be prepared through regulating the mass ratio of the polymerized monomer, thereby obtaining a series of copolymers with different dielectric constants. The obtained copolymers are configured into tetrahydrofuran solutions with the mass fractions of 10%-15%, and then copolymer films can be prepared by using a casting film-formation method. The copolymers obtained by the method have high dielectric constants and small density and is beneficial to the development of high-dielectric materials to small-size light materials.

Description

technical field

[0001] The invention belongs to the technical field of high dielectric materials, and in particular relates to an all-organic high dielectric copolymer material whose side chain contains polyaniline segments and a preparation method thereof. Background technique

[0002] High dielectric material is a kind of insulating material with broad application prospects. Because of its good performance of storing electric energy and uniform electric field, it has very important applications in electronics, motors and cable industries. With the rapid development of electronics, information and power industries, there is an urgent need for capacitor devices to develop in the direction of high energy storage, miniaturization and low energy consumption. For capacitors, in order to obtain capacitors with small size, light weight and high energy storage density, dielectric materials with low density and high dielectric constant must be used as capacitor dielectrics. Therefo...

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