Aggregates for coatings, coatings as well as preparation method and application thereof

Abstract

The invention provides aggregates for coatings, coatings as well as a preparation method and application thereof. The aggregates are prepared from sand grains and reflective heat insulation pigments.The coatings are prepared from 65 percent to 75 percent of aggregates, 12 percent to 20 percent of emulsion and 100 percent of water. The coatings are used for external-wall decoration or internal-wall decoration. The aggregates provided by the invention have excellent heat insulation performance, and the aggregates with varied colors can be customized, the colors are bright and the color difference is small. The coatings have the advantages of excellent color retention property, reflective heat insulation performance and adhesive force, and the preparation method of the coatings are simple, green and environment-friendly.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an aggregate for coatings, coatings and a preparation method and application thereof. Background technique [0002] With the development of the industry, changes in market demand, and changes in building decoration materials, real stone paint has been extensively studied. Among them, the pottery crystal coating is a coating formulated with colored sand of the same particle size as the main aggregate, synthetic resin or synthetic resin emulsion as the main binder, and several additives. Batch coating is the main method of construction for ceramic stone coatings. Ceramic stone coating has the decorative effect of granite, marble, natural stone and other stone materials, and has a flat and smooth surface, natural and realistic texture, rich colors and a hard stone-like finish. [0003] The colored sand as the aggregate is the main raw material of the ceramic crystal coating, and the colore...

AI Technical Summary

Problems solved by technology

Colored sand is divided into natural colored sand and artificial colored sand. Natural colored sand is processed by various natural colored rock slices through crushing, screening and other processes. It is characterized by natural and soft colors and easy processing. The supply situation of mineral sources is tightening, the color is relatively monotonous, the hue is unstable, and it does not conform to the concept of environmental protection. Artificial colored sand can be divided into general dyed colored sand and advanced dyed colored sand

The general dyed colored sand is characterized by bright colors and easy to fade; the advanced dyed colored sand is characterized by beautiful dyeing, bright colors, and not easy to fade, but the cost is high. Many reasons lead to the poor color retention, poor heat insulation, and poor adhesion of ceramic stone coatings. Disadvantages, these problems restrict the development of ceramic crystal coatings

[0004] CN105153854A discloses a high temperature-resistant and aging-resistant real stone paint reinforced by alumina fiber-aramid nanofiber composite and its preparation method. The real stone paint uses silicon-acrylic emulsion and elastic emulsion in combination, and has excellent water resistance, weather resistance and stain resistance. At the same time, the coating is mixed with alumina fibers coated with aramid nanofibers. This composite fiber body can greatly improve the strength and toughness of the coating, and greatly improve the tolerance to temperature, ultraviolet rays and weather; The real stone paint shows good construction performance and use performance in practical application. The surface of the coating is not easy to pulverize and crack, the color texture is durable, safe and environmentally friendly, and durable. However, the real stone paint has a strong heat absorption capacity. When the paint is applied When clad on the exterior wall of the building, the indoor temperature will be higher and the color will be monotonous

[0005] CN104876470B discloses a waterproof inorganic dry powder real stone paint, said real stone paint is composed of the following components in parts by weight: 0.6-1.4 parts of auxiliary agent, 70-106 parts of filler, 2.2-4.4 parts of thickener, 2-2 parts of preservative 4 parts, 5.75-22.5 parts of binder, 0-5 parts of colorant, said binder consists of 5-15 parts of dispersible latex powder, 0.5-5 parts of methyl silicate, 0.25-2.5 parts of ash calcium powder Composition, the methyl silicate is composed of potassium methyl silicate and sodium methyl silicate in a ratio of 1:1. The real stone paint is not easy to return to alkali and white, healthy and environmentally friendly, and has outstanding waterproof effect, but the heat insulation The ability is poor, and it is prone to discoloration and other phenomena

The anti-cracking and pollution-resistant real stone paint film prepared by the invention has a hardness of ≥2HB, is not easy to deform and produce cracks, prolongs its service life, and ensures its beauty; and the surface of the paint film is not easy to be contaminated with dust, has strong anti-pollution ability, and the contaminated dust is easy to clean , but its heat insulation is poor, and the color is monotonous

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