A kind of photothermal dual curing water-based radiation heat dissipation coating and preparation method thereof

Abstract

The invention provides a photo-thermal dual curing water-based thermal radiating coating and a preparation method thereof. A capsule core of a photosensitive microcapsule comprises the following components in parts by weight: a basic metal oxide and an epoxy hardener. The photo-thermal dual curing water-based thermal radiating coating provided by the invention is capable of quickly and simultaneously performing photo-thermal dual curing, requires no preheating treatment, is capable of solving the problem of incapability of deep curing caused by light scattering, refraction and absorption effects of the filler and the problem of incapability of fully curing, is capable of greatly reducing curing cost and energy consumption and has high adhesive power, high hardness, high salt mist resistance, low volume shrinkage rate and excellent wear-resisting property. The invention also provides the preparation method of the photo-thermal dual curing water-based thermal radiating coating. The method is simple and the efficiency is high.

Description

technical field [0001] The invention relates to the field of polymer coatings, in particular to a photothermal dual curing water-based radiation heat dissipation coating and a preparation method thereof. Background technique [0002] For radiation heat dissipation coatings, thermally conductive fillers are essential additives. At present, graphene and carbon nanotubes have been widely used in the preparation of water-based radiation heat dissipation coatings as a new type of high thermal conductivity filler. However, due to the use of graphite When colored substances such as alkene or carbon nanotubes are used as radiation fillers, the dark fillers will scatter, refract, and absorb light so that the light cannot penetrate, which has a great impact on UV curing. The surface of the component is used for curing, and there are many shadow areas that cannot be illuminated by UV light, so it is difficult to achieve UV curing, which greatly limits the application of UV curing in co...

AI Technical Summary

Problems solved by technology

However, the photothermal dual curing method not only needs to go through the UV irradiation process, but also needs to go through the heat treatment process to achieve complete curing. In addition, the UV coating of the traditional environmental protection water-based system, because the system contains water, generally needs to be cured before UV curing. Heating and baking process to speed up water evaporation

Therefore, the traditional water-based photothermal dual-curing coatings undergo a three-step curing process of pre-curing, photo-curing, and thermal curing, which makes the entire curing process of water-based UV-curing coatings lengthy, increases energy consumption, and reduces production efficiency.

At the same time, after the UV-curable water-based coating is first heat-treated, the photoinitiator will be fixed in the coating film, and then irradiated by ultraviolet light to further react and cross-link, which will generate internal stress and deteriorate the performance of the coating film.

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