Bright-colored non-discoloring inorganic coating and preparation method thereof

Abstract

The invention discloses a brilliant-color non-discoloring inorganic coating which comprises the following components in percentage by weight: 25-35% of pure water; 0.1%-0.2% of a thickening agent; 0.1%-0.2% of a multifunctional auxiliary agent; 0.6%-0.8% of a dispersing agent; 0.2%-0.3% of a defoaming agent; 0%-1% of rutile titanium dioxide; 10%-15% of a filler; 10%-15% of aluminum hydroxide sol; 20%-30% of a composite inorganic emulsion; 0.06%-0.1% of a bactericidal preservative; 0.1%-0.15% of a mildew preventive; 0.1%-0.5% of a rheology modifier; 0.1%-0.2% of a wetting agent; 0.05%-0.1% of a light stabilizer; and 15%-20% of organic color paste. Two film-forming substances, namely the composite inorganic emulsion and the aluminum hydroxide sol, are used, so that the alkali resistance, breathability, durability and artificial aging resistance I level of a coating film are met, and the two film-forming substances are the basis of non-discoloring film forming; and the non-alkaline amino ether hindered amine light stabilizer is adopted, so that the photooxidation of the adhesive can be inhibited, and the resistance of the coating to gloss loss, pulverization, cracking, layering and color change is improved.

Description

technical field [0001] The invention relates to the technical field of architectural coatings, in particular to a brightly colored and non-discoloring inorganic coating and a preparation method thereof. Background technique [0002] Architectural coatings are an important part of coatings, which play a decisive role in beautifying the urban environment. Architectural coatings are classified according to the composition of the film-forming matrix, and can be divided into two categories: organic architectural coatings and inorganic architectural coatings. Organic architectural coatings have excellent adhesion strength, flexibility, gloss and decorative properties, but they are not as superior as inorganic architectural coatings in terms of thermal stability, environmental protection, aging resistance and surface hardness. Inorganic architectural coatings are a type of architectural coatings that use inorganic materials as the main film-forming substance or binder, and are an ...

AI Technical Summary

Problems solved by technology

[0003] However, most of the inorganic coatings on the market today are usually composed of inorganic film-forming substances and emulsion physical machinery. For example, silicates in coatings directly contact with water, pigments and fillers, etc. The polyvalent metal ions contained in it react to form insoluble silicate, which has a great impact on the stability of the product, and has strong restrictions on the combination of powder and the metal ions of the powder, which is not conducive to storage and use.

And the use of emulsion physical and mechanical mixing will bring about the generation of peculiar smell and the risk of excessive non-volatile content (VOC)

[0004] In addition, most of the inorganic paints on the market have problems with storage and stability of the paint film (colored paint) when adding organic colorants, and cannot last, so this is a technical difficulty for bright color inorganic paints.

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