Graphene powder metallic topcoat and preparation method thereof

Abstract

The application discloses graphene powder metallic topcoat, comprising a base, a filling material, a gaseous corrosion inhibitor and an aid, wherein the base comprises, by weight, 30-50 parts of polyester powder resin, 5-15 parts of polytetrafluoroethylene resin, 3-5 parts of curing agent (TGIC) and 5-15 parts of fluorocarbon powder resin; the filling material includes, by weight, 1-5 parts of flaky aluminum powder or pearl powder, 20-40 parts of barium sulfate, and 0.05-1 part of graphene. The aluminum power or pearl powder is added by means of binding, so that a coating layer of the graphenepowder metallic topcoat has better appearance and better decorating property. By adding the flaky aluminum powder, the coating layer has better light reflecting effect; weatherability of the graphenepowder metallic topcoat is improved to certain degree. Conductivity of graphene helps transfer photo-cured electrons in time, which are generated by coating pigment-filler exposed to ultraviolet; damage to resin macromolecular chains due to the photo-cured electrons is prevented; aging resistance of the coating layer is effectively improved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a graphene-containing powder metal topcoat coating and a preparation method thereof. Background technique [0002] In recent years, the environmental friendliness and energy saving and emission reduction advantages of powder coatings have become increasingly prominent, and the industry is facing good development opportunities. As a solvent-free coating, powder coating conforms to the internationally popular "four E" principles (economy, environmental protection, high efficiency, and excellent performance), and is welcomed by people. Its characteristics are as follows: [0003] Simple process: powder coating is a technology that uses an electrostatic generator to charge powder particles, evenly adsorbs them on the metal substrate, and then transforms them into a hard protective coating through high-temperature melting and curing. The investment is small and the coating process is simple a...

AI Technical Summary

Problems solved by technology

However, the UV aging resistance of ordinary powder topcoats currently on the market is about 300-500h, and its weather resistance is limited, which cannot meet the growing needs of customers, making powder coatings unable to be used in areas with strong light and harsh environments , must be combined with other protective measures, which not only increases the project cost but also causes a great waste of resources

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