Graphene phenolic resin composite material and application thereof

Abstract

The invention relates to the technical field of phenolic resin composite materials, in particular to a graphene phenolic resin composite material. Oxidized graphene, hydrazine hydrate, a surfactant and a formaldehyde solution are added into a reactor, stirred and heated up to 80-100 DEG C for reaction; the obtained liquid reactant is cooled down to 60-80 DEG C, then an acid catalyst and phenol are added, the temperature is increased to 85-100 DEG C for reaction, and then heating dehydration is performed. The graphene phenolic resin composite material can be applied to bakelite powder. As the proper surfactant is adopted, the problem of dispersion of graphene in resin is solved, and uniformly mixed graphene modified phenolic resin is obtained; the oxidized graphene which is not reduced can further react with phenolic resin to obtain graphene modified phenolic resin of an inorganic complexing structure; the bakelite powder prepared by resin has relatively high impact resistance and low forming shrinkage ratio.

Description

technical field [0001] The invention relates to the technical field of phenolic resin composite materials, in particular to a graphene phenolic resin composite material, and also relates to the application of the graphene phenolic resin composite material. Background technique [0002] Phenolic resin is the earliest industrialized synthetic resin in the world. It has a history of nearly a hundred years. Due to its easy-to-obtain raw materials, low price, simple production process and equipment, and more importantly, its excellent mechanical properties, heat resistance, and Ablation performance, electrical insulation performance, formability and flame retardancy have become indispensable materials in the bakelite industry. The traditional unmodified phenolic resin has high brittleness, poor toughness and shrinkage during molding, which limit its application in high-end bakelite products. [0003] Patent CN101974199A introduces a low-shrinkage phenolic molding compound, whi...

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Problems solved by technology

[0006] In order to solve the problem that graphene is not uniformly dispersed in the preparation of graphene phenolic resin in the above prior art and causes performance to be limited, the invention provides a graphite Graphene is more evenly distributed in the phenolic resin, and the resulting graphene-phenolic resin composite material has high resin impact strength and low molding shrinkage.

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