A kind of thick film anti-cracking inorganic zinc silicate antirust paint and preparation method thereof
An inorganic zinc silicate, anti-cracking technology, used in anti-corrosion coatings, fire-retardant coatings, coatings, etc., can solve the problem of poor temperature resistance and chemical corrosion resistance of thick films, and inorganic zinc silicate anti-rust paint is easy to crack or fall off. problem, to achieve the effect of excellent high temperature resistance, excellent corrosion resistance and simple preparation process
Active Publication Date: 2022-04-19
XIAMEN SUNRUI SHIP COATING
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Problems solved by technology
[0008] In order to solve the problems mentioned in the above-mentioned background technology: the existing inorganic zinc silicate antirust paint is easy to crack or fall off, and the existing inorganic zinc silicate paint that can improve the problem of thick film cracking has poor temperature resistance and chemical corrosion resistance. good question
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[0038] The present invention also provides a method for preparing the above-mentioned thick-film anti-cracking inorganic zinc silicate antirust paint, wherein the preparation method of component B includes the following steps: S100, adding ethyl silicate or / or With ethyl silicate prepolymer and solvent, under stirring conditions, slowly add acidic solution dropwise and react for 50-70 minutes; S200, add toughening resin and continue stirring for 90-120 minutes; S300, under stirring conditions, obtained in S200 Add glass fiber to the reaction product, and disperse at a high speed until it is evenly distributed to obtain component B.
[0039] Preferably, in S100, the acidic solution is added dropwise within 30-60 minutes.
[0040]Preferably, in S300, the reaction product obtained in S200 is transferred to a high-speed dispersant, and then glass fibers are added under stirring conditions, and dispersed at a high speed until uniform.
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The invention relates to the technical field of coatings, in particular to a thick-film anti-cracking inorganic zinc silicate antirust paint and a preparation method thereof. The thick film anti-cracking inorganic zinc silicate antirust paint comprises A component and B component, and described A component comprises zinc powder; Described B component comprises ethyl silicate or / and ethyl silicate prepolymer, Toughening resin, glass fiber, solvent and acid solution; the toughening resin is one or more combination of isocyanate and isocyanate adduct. The thick-film anti-cracking inorganic zinc silicate antirust paint has a coating film thickness of 180 μm without cracking, which is suitable for thick-film spraying construction. At the same time, it can maintain the characteristics of inorganic film-forming and excellent high-temperature resistance. It can achieve heat resistance above 400°C and has excellent corrosion resistance, which can meet the long-term heavy-duty anti-corrosion application requirements of various steel structures in the marine environment; in addition, its raw materials are easy to obtain and the preparation process is simple, and it is suitable for large-scale production.
Description
technical field [0001] The invention relates to the technical field of coatings, in particular to a thick-film anti-cracking inorganic zinc silicate antirust paint and a preparation method thereof. Background technique [0002] The existing alcohol-soluble inorganic zinc silicate antirust paint is composed of ethyl silicate prepolymer as the main raw material, adding ultrafine zinc powder, thickener, antirust pigments and fillers, solvents, and additives. Good corrosion resistance, as a heavy-duty anti-corrosion coating, it has been successfully applied to steel structures such as bridges and storage tanks. [0003] However, because the film-forming substance in the existing alcohol-soluble inorganic zinc silicate antirust paint is an inorganic Si-O three-dimensional network, the flexibility of the paint film is relatively poor, and the coating is prone to cracking or cracking when subjected to an external force that deforms it. Falling off; even in the absence of external ...
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IPC IPC(8): C09D1/00C09D5/10C09D7/61
CPCC09D1/00C09D5/106C09D5/18C09D7/61C09D7/70
Inventor 苏雅丽杨名亮彭毛来宋志生
Owner XIAMEN SUNRUI SHIP COATING