Method for preparing graphene polyvinyl chloride resin compound material

Abstract

The invention discloses a method for preparing a graphene polyvinyl chloride resin compound material. The method comprises the following steps: firstly, synthesizing graphite oxide by utilizing graphite, and preparing a graphene oxide solution with stable dispersibility from the graphite oxide; then, reacting the graphene oxide solution with copper lysine, adding sodium borohydride for primary reduction; removing residual copper in the system through sulfonation reaction and hydrazine hydrate reduction, filtering, washing and drying to obtain functional graphene; dissolving the functional graphene in acetone, performing ultrasonic treatment, adding dispersant, initiator and surfactant, stirring and mixing in the presence of nitrogen; and adding chloroethylene monomer, magnetically stirringto react, and pouring the product into a die for curing and molding after the reaction is completed. According to the preparation method, the preparation process is scientific and reasonable, the dispersibility of the material is effectively improved by functionalizing graphene, the compound performance of graphene and high-molecular resin can be promoted, and the tensile strength and impact resistance of the material can be enhanced.

Description

technical field [0001] The invention relates to the technical field of graphene materials, in particular to a method for preparing a graphene polyvinyl chloride resin composite material. Background technique [0002] Graphene is composed of a two-dimensional honeycomb lattice composed of flat single-layer carbon atoms, which is considered to be the basic unit of other carbon materials. It can be wrapped into zero-dimensional fullerene and curled into one-dimensional carbon. Nanotubes and stacking into three-dimensional graphite. Graphene has excellent mechanical properties due to its special structure, and has become a research hotspot in many fields such as physics, chemistry, biology, and materials. Because graphene has many advantages, it is widely used as an inorganic filler to fill polymers, so as to obtain composite materials with excellent performance. According to research by Gao Dengzheng and others, the large specific surface area of ​​graphene and the dispersion...

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Problems solved by technology

However, the composite material formed by graphene and resin has greatly improved the overall performance of the resin. In addition, the graphene modified resin can also endow the material with new functions and expand the application field of the material; but the process of mixing graphene and resin Among them, graphene sheets are easy to agglomerate, and it is easy to pile up again to form graphite. Therefore, it is necessary to carry out surface treatment on graphene, and graphene does not contain any active groups, and its surface is inert, so it is difficult to modify it. Therefore, in order to improve the dispersion of graphene in polymer resin, how to introduce different functional groups on the surface of graphene is a research hotspot of many relevant scientific researchers.

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