A kind of preparation method of water-based low solar absorption ratio antistatic coating

Abstract

The invention relates to a method for preparing a water-based low solar absorption ratio antistatic coating, the method comprising: (1) 15-30 parts of deionized water, 0.1-0.8 parts of a neutralizing agent, 0.2-2 parts of a thickener, 0.5 ‑3 parts of wetting and dispersing agent, 0.1‑1 part of surfactant, 0.1‑2 part of defoamer, 0.1‑0.5 part of antibacterial agent and 1‑10 part of pigment are prepared into a pigment slurry, and stirred at 2000‑3000r / min for 20 ‑30min to uniform dispersion; (2), 30‑50 parts of water-based hydroxyl resin, 25‑50 parts of conductive filler, 0.1‑1 part of defoamer and 0.2‑1.5 parts of rheology modifier are added to the pigment slurry and stirred evenly; ( 3), the mill base is carried out high-speed dispersion 20-40min, and the dispersion speed is 1500-2500r / min; (4), add 10-20 mass parts of aliphatic isocyanate or alicyclic isocyanate in the mill base; (5), carry out Multiple spraying, the thickness of each spraying is 10-25 μm, and the total thickness of the control coating is 80-150 μm; this method improves the environmental performance of the product, and the prepared coating has high infrared emissivity and low solar absorption ratio, and It has excellent antistatic, salt spray resistance, heat and humidity resistance and aging resistance.

Description

technical field [0001] The invention relates to a preparation method of a water-based low solar absorption ratio antistatic coating and a low solar absorption ratio antistatic coating formed by the coating, belonging to the technical field of functional coatings. Background technique [0002] With the advancement of science and technology and economic development, people's awareness of environmental protection is increasing day by day, environmental protection laws and regulations are becoming more and more perfect, saving money and energy, and protecting the environment have become the main problems faced by the global coatings industry. Emissions of volatile organic compounds (VOC), such as EU Directive.99 / 13 / CE regulation, US CAAA (Clean Air Act Amendment, 1990), my country has also introduced a series of regulations to limit the emission of harmful substances in paint. Compared with traditional solvent-based coatings, water-based coatings use water as the dispersion mediu...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a method for preparing a water-based low solar absorption ratio antistatic coating. The water-based antistatic coating prepared by the method can replace the solvent-based coating and improve the environmental protection of the product. At the same time, it overcomes the problem of poor thermal control performance of traditional antistatic coatings. The prepared coating has high infrared emissivity and low solar absorption ratio, and has excellent antistatic, salt spray resistance, heat and humidity resistance and aging resistance.

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