Anti-adhesion rock slice and preparation method thereof

Abstract

The invention discloses an anti-adhesion rock slice, which is prepared from the following components in percentage by weight: 30 to 50 parts of waterborne acrylic resin, 5 to 20 parts of chitin, 0.1 to 2 parts of mixed acid, 0.05 to 1 part of accelerant, 15 to 45 parts of filler and the balance of water, wherein the mixed acid comprises boric acid and at least one organic acid, the molar ratio of the boric acid to the organic acid is (1: 10)-(10: 1), the deacetylation degree of the chitin is lower than 50%, and the water-based acrylate is selected from one or more of hydroxyethyl acrylate, hydroxypropyl acrylate and glycidyl methacrylate. The rock slice can be mixed, stirred and dispersed in natural colored sand or sintered colored sand, can also be prevented from being ground, and after being stored at high temperature and high humidity, the rock slice can keep stable quality, the flexibility is not obviously changed, adhesion is avoided, and the rock slice has excellent anti-adhesion performance.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an anti-adhesion rock slice. Background technique [0002] Real stone paint is a kind of architectural coating made of natural colored sand and other colored materials, combined with special resin and advanced raw materials. It can be sprayed on stone samples, and the painted surface is colorful and bright. In order to ensure the real effect and quality of its spraying, it is often necessary to spray a large amount of real stone paint on the stone sample plate. The general spraying amount is 2-10 kg per square meter. Therefore, it will cause the wall to bear too much weight, accelerate the fatigue of the building, and slowly cause the wall to crack, deform and fall off, which will affect the appearance. [0003] Chitin is a linear polysaccharide linked by N-acetyl-D-glucosamine through β(1-4) glycoside bonds. Chitin, its English name is Chitin. The molecular formula of chitin is (C8H1...

AI Technical Summary

Problems solved by technology

Rock flakes are the product of paint film formation, but the difference from ordinary paint film formation is that, on the one hand, rock flakes are not like ordinary paints, which require uniform coating and no holes. The coating of rock flakes can be uneven, which can produce certain Holes, secondly, rock flakes are generally mixed with natural colored sand or sintered colored sand, and the stirring time is generally 20 minutes to 1 hour, which needs to be able to disperse in time and not be ground; Thinner rock flakes have been developed, but rock flakes are used in engineering, and are generally mixed with natural colored sand or sintered colored sand. The stirring time is generally 20 minutes to 1 hour. The purpose is to disperse the rock flakes in the real stone paint, but the rock flakes The selected water-based acrylic resin is generally a thermosetting resin, which gradually hardens and forms after heating. It has high heat resistance and is not easy to deform under pressure. However, the disadvantage is that the mechanical properties are poor, and the thinner the rock slice, the worse the flexibility. Therefore, the prior art, such as Chinese patent CN105907213A and Chinese patent CN105505221A, all use the raw materials of the rock flakes to be mixed evenly, without heating up and solidified, and then dried and molded after direct roller coating, so that the water-based acrylic resin in the formed rock flakes is only partially cured. Many acrylic resins are not cured and molded, so on the one hand, the rock slices are easy to absorb water, causing mildew; Because it is brittle and not resistant to stirring, the higher the degree of heat curing, the more brittle the rock slices, and it is easy to stick without heat curing. It is not easy to disperse in real stone paint coatings. Natural colored sand or sintered colored sand is ground, which limits qualified rock slices to a very limited range. Since rock slices are generally controlled by drying to control the curing degree of acrylic resin, the quality difference between product batches is large, and the rock slices produced Finally, it takes an uncertain time and various spraying processes to spray on the exterior wall of the building at last, which makes it difficult to control the quality of the stone-like effect finally presented on the building.

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