Graphene aluminum composite conductive coating and preparation method thereof

Abstract

The invention provides a graphene aluminum composite conductive coating. The graphene aluminum composite conductive coating is prepared from the following components in parts by mass through reaction: 30-60 parts of resin, 5-10 parts of modified graphene composite aluminum powder, 20-40 parts of an organic solvent, 1.5-3 parts of a catalyst and 10-20 parts of a cross-linking agent. The graphene-aluminum composite material is adopted as a conductive agent, firstly, aluminum has good conductivity and low density, after graphene is subjected to hot press molding, due to the fact that a small amount of interface layer of Al4C3 is formed, the performance of the material is improved, and due to the fact that the hot press temperature and time are controlled, no more Al4C3 is formed, and the performance of the material is lowered; the specific surface of the machine is selected from materials, and the electric conduction and heat dissipation performance is excellent. The overall mechanical strength is further improved through the viscosity of the resin and the cross-linking effect of the cross-linking agent, and the modified graphene is hydroxyl-rich graphene oxide and can be partially cross-linked with the resin to form an organic whole, so that the overall material performance is further improved, and finally, the conductive coating with good conductivity, high heat dissipation capability and high mechanical strength is obtained.

Description

technical field [0001] The invention belongs to the field of polymer coatings, in particular to a graphene-aluminum composite conductive coating and a preparation method thereof. Background technique [0002] Conductive coating is a special functional coating developed rapidly along with modern science and technology, with a development history of about half a century. In 1948, the United States published a patent for making conductive adhesive from silver and epoxy resin, which was the earliest disclosed conductive paint. my country also began to study and apply conductive coatings in the 1950s. In recent decades, conductive coatings have been applied in various military and civilian industrial fields such as electronics, electrical appliances, aviation, chemical industry, and printing. Correspondingly, the theoretical research on conductive coatings has also developed rapidly, and has promoted the increasingly mature and perfect application technology. Conductive paint ...

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