Wall coating composition capable of realizing inorganic film formation by using composite hydraulic-anhydraulic gel structure

Abstract

The invention relates to a wall surface coating composition capable of realizing inorganic film formation by using a composite hydraulic-anhydraulic gel structure, belonging to the technical field ofcoatings. According to a technical scheme in the invention, a degradable inorganic material is used as a raw material, a high-molecular polymer is not used as an adhesive, hydraulic and anhydraulic inorganic gels are compounded to form a film, excitation and reinforcement substances are used as auxiliary materials, and chemical and physical composite retarding schemes are preferably selected for different retarding mechanisms, so the problem of difficulty in balancing environmental protection, degradation and construction performance, coating strength, alkali efflorescence inhibition, frost efflorescence inhibition and preparation cost in the prior art is solved. According to an overall technical scheme in the invention, multiple purposes including a thick bottom layer coating material anda thin surface layer coating material can be derived from the wall surface coating composition, so market requirements for substrate leveling, surface layer covering, color matching decoration and the like are met, the unique ventilation and moisture absorption functions of a dry powder coating are kept, and the wall surface coating composition is suitable for being widely applied and popularizedin the market.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a wall surface coating composition which forms an inorganic film with a composite water-aerohard gel structure. Background technique [0002] With the development of domestic building materials and coatings industry, architectural wall decoration coatings have developed into three main forms: solvent-based coatings, water-based coatings, and powder coatings. The ingredients are mainly composed of four parts: film-forming substances, fillers, additives and dispersion media. [0003] The dispersion medium of solvent-based paint is an organic solvent, which plays the role of dissolving and dispersing its organic film-forming substance. The film-forming substance is a synthetic resin, and the emission of volatile organic compounds (VOC) in the paint is relatively high, such as traditional latex paint and decorative paint. [0004] The dispersion medium of water-based paint is water...

AI Technical Summary

Problems solved by technology

[0025] This kind of wall coating compound putty based on alkaline cement-based film-forming substances has made great progress in environmental protection, strength, crack resistance, mildew resistance, and cost, but there are still problems of easy seepage of alkali and alkali return during construction. The technical problems of short window period, low early strength, and unsatisfactory curing effect under normal temperature and anhydrous curing conditions; in addition, in terms of construction, strength, color consistency, hand feeling, etc., it is obviously impossible to use thin wipe construction technology for wall surface coating decorate

[0026] Based on the above, solvent-based coatings and water-based coatings belong to thin decorative coatings due to their shape and construction characteristics. Although they can achieve decorative effects in various colors or superficial textures, their VOC value depends on the quality of organic solvents, polymer emulsions and The environmental protection characteristics of other water-based additives still affect the health of the living environment, and the film-forming substances are not breathable and hygroscopic. It is water or other liquid solvents, at least half of the transportation cost is used to transport the water or solvents that will eventually be volatilized, and the emissions generated during the production and preparation process will pollute the environment

The environmental friendliness of solvent-based coatings is low, and they are gradually being phased out; water-based coatings are only suitable for wall surface coating due to their thin coatings, and are not suitable for use as wall base leveling coatings

[0027] Although powder coatings have high environmental protection characteristics and good air permeability and moisture absorption, the construction performance, adhesion strength and weather resistance still need to be improved; while the existing technology is trying to get rid of the dependence on organic polymers as bonding materials, it has brought about to varying degrees Increased preparation costs, short construction window period, self-inhibiting alkali return and alkali resistance and other prominent problems; and in the face of different usage scenarios for the bottom and surface coatings, different technical routes and technical solutions need to be used to solve them respectively

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