Weather-resistant water-based sand-textured paint and preparation method thereof

Abstract

The invention discloses a weather-resistant water-based sand-textured paint and a preparation method thereof. The weather-resistant water-based sand-textured paint is composed of a component A and a component B. When the weather-resistant water-based sand-textured paint is used, the component A and the component B are mixed according to the mass ratio of (4-8):1, and the component A is composed ofwater-based hydroxyl fluorocarbon emulsion, carbon black, sand-textured powder, water-based auxiliary agents and deionized water; the component B comprises the components in parts by mass: a hydrophilic isocyanate curing agent, an anhydrous diluent and a dehydrating agent. The product water-based sand-textured paint is convenient to construct, capable of being self-dried at normal temperature, low in VOC content and more environmentally friendly; the paint has excellent adhesive force on the surface of an aluminum profile, a paint film is resistant to boiling, the weather resistance is outstanding, and the self-cleaning effect is remarkable.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a weather-resistant water-based sand texture paint and a preparation method thereof. Background technique [0002] As we all know, in the construction industry, metal profiles are widely used due to their excellent decoration, durability and easy processing and formability. The aluminum profile has many advantages such as light weight, high strength, and anti-corrosion, and its consumption accounts for more than 80% of the metal profile consumption. [0003] The surface treatment of aluminum profiles is indispensable in its processing, the purpose is to improve the protection, decoration and functionality of aluminum profiles. For aluminum profiles in the construction industry, leveling powder coatings are widely used at present. Their weather resistance is average, and their curing temperature is usually higher than 180°C. The energy consumption is large and the cost is relatively high....

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Problems solved by technology

[0005] The Chinese patent with publication number CN 107418337A discloses a water-based sand texture paint and its preparation method. The water-based sand texture paint uses transparent glass sand and precipitated barium sulfate. The water-based sand texture paint is prepared by adding fillers, which affects the mechanical properties of the paint film. , its adhesion is level 1, which cannot meet the standard requirements of some customers

[0006] The Chinese patent with publication number CN103146292A discloses a kind of water-boiling-resistant polyester powder coating and its preparation method and application. The coating adopts a mixed curing agent system of polyester resin, HAA and isocyanate, and relies on adding hydrophobic fillers to improve water-boiling resistance. The water boiling resistance is equivalent to the general TGIC system, and the weather resistance of this coating is average, it is not a sand texture paint specially developed for aluminum profiles

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