A kind of superhydrophobic high heat dissipation coating and preparation method thereof

Abstract

The invention provides super-hydrophobic and high-heat-dissipation paint and a preparation method thereof. The paint comprises two parts: a component A super-hydrophobic material and a component B paint composition; the component A super-hydrophobic material is prepared from the following components in parts by mass: 35 to 50 parts of graphene, 2.5 to 6 parts of ethyl silicate, 5 to 12 parts of a silane coupling agent, 55 to 75 parts of absolute ethyl alcohol, 0.8 to 2 parts of ammonia water and 8 to 15 parts of de-ionized water; the surface of the graphene is subjected to silanization treatment through a sol-gel method to obtain the super-hydrophobic material; the component B paint composition is prepared from the following components in parts by mass: 20 to 30 parts of lignin, 20 to 30 parts of starch, 16 to 18 parts of diatomite, 10 to 12 parts of ash calcium, 11 to 15 parts of calcium triple superphosphate, 0.5 to 1 part of a de-foaming agent, 0.8 to 1 part of a dispersant and 15 to 30 parts of de-ionized water; the component A super-hydrophobic material and the component B paint composition are mixed to prepare waterproof paint. By adopting biomass raw materials including the starch, the lignin, the diatomite and the like, the comprehensive air permeability is better that of common macromolecular polymer paint; the added super-hydrophobic material has high coefficient of heat conductivity and high specific surface area, so that a paint layer has more uniform and better waterproof performance and the heat dissipation of the paint is also greatly improved.

Description

technical field [0001] The patent of the invention belongs to the technical field of coatings, and in particular relates to a super-hydrophobic high heat dissipation coating and a preparation method thereof. Background technique [0002] Heat dissipation material is a special coating that improves the heat dissipation efficiency of the surface of the object and reduces the temperature of the system. It can be divided into three categories: organic solvent-based heat dissipation coatings, water-based heat dissipation coatings, and (solvent-free) powder heat dissipation coatings. The organic solvent type is not friendly to the environment, and the solvent-free type has stricter requirements on the spraying process. Therefore, water-based heat-dissipating coatings are more respected at present, and water-based heat-dissipating coatings not only have high drying costs, but also the waterproofness of the coating needs to be improved. . Contents of the invention [0003] In vie...

AI Technical Summary

Problems solved by technology

The organic solvent type is not friendly to the environment, and the solvent-free type has stricter requirements on the spraying process. Therefore, water-based heat-dissipating coatings are more respected at present, and water-based heat-dissipating coatings not only have high drying costs, but also the waterproofness of the coating needs to be improved.