A kind of uv curing paint, coating and graphite heat dissipation material

Abstract

The invention relates to an ultraviolet (UV)-curable paint, a coating and a graphite heat dissipation material. The UV-curable paint is prepared from 50-75% of a polyurethane acrylate (PUA) oligomer, 0.5-20% of an active diluent (1), 0.2-10% of an active diluent (2), 0.05-10% of an active diluent (3), 1-10% of a photoinitiator and 0.05-0.4% of an auxiliary agent, wherein the active diluent (1) is prepared from ethoxyethoxyethyl acrylate, the active diluent (2) is prepared from ethylene glycol diacrylate, and the active diluent (3) is prepared from hydroxyl acrylate and / or tetrahydrofurfuryl acrylate. The paint can be subjected to ultraviolet curing, heating does not need to be carried out in the curing process, and a solvent is not evaporated in the curing process; after a graphite sheet substrate is coated with the paint and the paint is cured, the coating is low in shrinkage rate; the graphite heat dissipation material has excellent bending resistance, voltage breakdown resistance, wear resistance and flexibility; the coating has better adhesion force with substrates such as the graphite sheet substrate, and is an environment-friendly material.

Description

technical field [0001] The invention relates to the field of heat dissipation, in particular to a coating and a heat dissipation material. Background technique [0002] With the rapid development of the microelectronics industry, electronic components and electronic equipment are increasingly miniaturized, integrated and high-density. The heating problem of electronic products has become a bottleneck restricting its development. Manufacturers usually use heat dissipation materials to accelerate the heat dissipation of electronic products. . Graphite sheet heat dissipation materials have the advantages of high thermal conductivity and low density, and have been widely used in recent years. However, graphite flakes are fragile, have poor wear resistance and strong conductivity, and the tiny debris falling off from graphite flakes may cause short circuits in electronic products. Applying glue to the surface of the graphite sheet can solve the above problems to a certain exten...

AI Technical Summary

Problems solved by technology

However, the coatings prepared by ordinary UV-curable coatings are difficult to have good bending resistance, voltage breakdown resistance, wear resistance, flexibility or adhesion, which cannot meet the requirements of the heat dissipation field.

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