Heat dissipation hydrophilic coating and preparation method thereof

Abstract

The invention relates to a heat dissipation hydrophilic coating and a preparation method thereof. The heat dissipation hydrophilic coating is prepared from, by weight, 10-40% of modified waterborne epoxy resin, 1-20% of water soluble acrylic resin, 1-10% of acrylic resin, 0.1-5% of hydrophilic surfactant, 1-5% of a carbon nanomaterial, 0.1-5% of a wetting agent, 0.1-5% of a flatting agent, 2-10% of cosolvent and the balance deionized water. Good compatible dispersion to the carbon nanomaterial is obtained through epoxy resin modification, a good film-forming property is obtained, the carbon nanomaterial can exert the characteristics of high thermal conductivity, high infrared radiance and the like, the hydrophilic coating can have the radiation and heat dissipation functions, heat dissipation and anti-corrosion performance of air conditioner aluminum foil, an aluminum foil heat exchanger and other equipment can be remarkably improved, the energy efficiency ratio is raised, and important business value is achieved.

Description

technical field [0001] The invention relates to a water-based paint and a preparation method thereof, in particular to a heat-dissipating hydrophilic paint and a preparation method thereof. Background technique [0002] Traditional hydrophilic coating is a water-based coating used to improve the surface properties of substances, mainly used for aluminum and aluminum alloy products, especially the hydrophilic and hydrophobic properties of air-conditioning heat exchanger fins. When the air conditioner and refrigerator are working, the water vapor in the air is easy to condense on the surface, and a water bridge is formed between the fins, which hinders the air circulation and increases the noise. At present, the mainstream products on the market are coated with a layer of organic hydrophilic paint on the surface, so that the condensed water spreads on the surface and evaporates quickly. However, organic coatings generally have low thermal conductivity, which hinders effective...

AI Technical Summary

Problems solved by technology

However, due to the huge specific surface area of ​​nano-carbon materials, it is difficult to disperse, and the compatibility of general-purpose resins with them is poor, and it is difficult to obtain uniform composites with high volume content.

The addition of high-volume inorganic fillers often leads to a sharp decline in the film-forming properties of coatings. How to overcome the addition of high-volume inorganic fillers and maintain good film-forming properties is a long-term difficulty faced by the coatings industry

In particular, the viscosity of the resin matrix rises sharply after the nano-carbon material is compounded, and it is difficult to control the film-forming properties of the coating

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