Environment-friendly single liquid aqueous mixed coating and double liquid aqueous mixed coating

Abstract

The invention discloses an environment-friendly single liquid aqueous mixed coating which comprises an agent A: an aqueous resin dispersion liquid and a selected bridging agent as an agent B, whereinthe aqueous resin dispersion liquid comprises a group composed of tertiary amine (for example aqueous resin neutralized by triethylamine) and at least one aqueous resin which is selected from water-borne epoxy resin, water-borne polyurethane and water-borne acrylic-based resin, wherein the at least one aqueous solution contains carboxyl and other reactive functional groups; when the agents A and Bare mixed to form the single liquid aqueous mixed coating, sprayed and dried, the bridging agent is bridged with the at least one aqueous resin to form a reciprocal crossed netty structure. The single liquid aqueous mixed coating can be coated to various materials to form non-permanent material protecting films. After the materials are processed, the materials are only soaked in water, and the protecting films can be peeled, recovered and centrally processed from the surfaces of the materials easily without using any organic solvents in the full course. The invention also discloses a double liquid aqueous mixed coating.

Description

technical field [0001] The invention relates to an environment-friendly one-component water-based hybrid coating, more particularly to a one-component water-based hybrid coating comprising a hybrid resin and a bridging agent. The invention also relates to a two-component water-based hybrid paint. Background technique [0002] Whether it is the processing or reprocessing of organic or inorganic materials, it is often exposed to dusty environments with a hardness of 7.0 Mohs scale; generally, inorganic materials (metals and non-metals) have higher hardness than organic materials , but the hardness of inorganic materials is still less than 7.0; inorganic materials include metals and non-metals, such as: [0003] 1. Metal: iron, steel, aluminum, copper, metal alloy, metal plated (nickel, chromium) film, etc.; [0004] 2. Non-metal: wafers, glass (optics, solar panels, ITO, lenses, mirrors), stone. [0005] During the polishing surface, material transportation and processing o...

AI Technical Summary

Problems solved by technology

[0024] Disadvantages: When applied to a large area with a curved or 3D surface, the film cannot achieve full protection; the film only relies on static electricity or the adhesion of the pressure-sensitive adhesive to the surface of the material is not good; the hardness of the film is not good; there may be residual glue (sensitive) Lamination); poor resistance to processing chemicals

[0027] Disadvantages: In the process of manufacturing, transportation and coating processing and drying, a large amount of organic solvents (usually >75% solvent) will volatilize, which is not only flammable but also causes air pollution; the final coating film is not easy to peel off, and it needs to rely on a large amount of organic solvents, so cleaning The final coating film contains a large amount of solvent and is difficult to handle

[0030] Disadvantages: During the coating process, there are volatile organic substances (including plasticizers), which cause concerns about industrial safety and hygiene; and it is not easy to remove the film after processing, and it needs to be destructively treated with strong alkali

[0033] Disadvantages: the existence of organic solvents that cause VOC troubles; the emulsifier added to the surface of the protective material is displaced, causing surface contamination; emulsions, additives, and additives often cause paint instability (emulsions are subject to critical cell concentration (CMC, critical micelle concentration), temperature and mechanical stirring will cause the emulsion to be unstable); the final protective film is not easy to peel off, and more organic solvents need to be used for cleaning

[0034] In view of the above, the traditional method of material surface protection not only causes environmental protection, sanitation, and safety problems and hidden worries, but also has the limitation of material processing methods and the difficulty of peeling off the final protective film that needs to be overcome; It is becoming more and more stringent, so it is imperative to seek products that meet environmental protection requirements, especially for the industry to respond to the social responsibility of protecting the earth

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