Method for preparing graphene/polystyrene conductive composite material

Abstract

The invention aims to propose a preparation method of a graphene / polystyrene conductive composite material. A kind of preparation method of graphene / polystyrene conductive composite material, adopt following steps: Step 1: the preparation of graphene oxide (GO) powder; Step 2: dispersion polymerization prepares cationic polystyrene (PS+) microsphere; Step 3 : Preparation of GNS / PS composites. The invention can inhibit the self-aggregation and induction of GNs and the selective distribution of graphene on the surface of polymer particles, forming a perfect three-dimensional graphene network skeleton; the relatively ordered three-dimensional structure of GNs constitutes a free electron conduction path, and GNs / The PS composite material exhibited extremely low conductive percolation value and high conductivity; the addition of graphene improved the thermal stability of PS, and the decomposition temperature of PS increased by 13.5 °C. This facile method provides a new idea for the construction of ordered inorganic filler microstructures in high-viscosity polymer systems, which is conducive to further expanding the application field of graphene-based conductive composites.

Description

technical field [0001] The invention relates to the technical field of material chemical preparation, in particular to a preparation method of a graphene / polystyrene conductive composite material. Background technique [0002] As a new type of carbon-based material, graphene has attracted extensive research in scientific and application fields due to its unique two-dimensional structure, good chemical stability, and excellent mechanical, optical, thermal, and electrical properties, and is considered to be the next-generation material. A generation of the most ideal structural and functional reinforcement materials. In recent years, the research on adding graphene nanosheets (GNs) as a conductive medium to polymers to prepare conductive composites has made rapid progress, and graphene-based conductive composites are also widely used in antistatic, sensors, capacitors, etc. field. [0003] The performance of graphene-based conductive composites not only depends on the degree...

AI Technical Summary

Problems solved by technology

However, these studies are mainly limited to graphene-based inorganic hybrid materials. In view of the high viscosity of polymers, there are still relatively few studies on the construction of high-dimensional graphene assemblies in polymers.