Scale-like coating composition, preparation method of scale-like coating composition, scale-like coating and preparation method of scale-like coating
A coating composition and scaly technology, applied in the field of special functional materials, can solve the problems of difficulty in meeting, high cost, unsatisfactory heat resistance, etc., and achieve the effects of improving service life, improving adhesion, and preventing high-temperature corrosion
Active Publication Date: 2022-03-15
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology
Although some progress has been made in the research of the above-mentioned materials, it is still difficult to meet the use under this specific harsh condition due to the high cost or the inability to meet the above-mentioned requirements for heat resistance.
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preparation example Construction
[0033] In this scheme, the specific preparation steps of the preparation method of the scaly coating composition are as follows:
[0034] Preparation steps before feeding: Accurately weigh the above-mentioned pigments and fillers according to the production volume requirements, place them in dry and clean trays, put them in an electric oven for drying, and pack the pigments and fillers into bags and seal them for later use after natural cooling. and identify accordingly.
[0035] The preparation steps of the primer layer: weigh the silica sol with a particle size of 8-15nm, the solvent and the first additive according to the above ratio and add them to the mixing container, stir with a high-speed disperser at 300r / min-600r / min for more than 20min, and disperse Uniform discharge and packaging;
[0036] The preparation steps of the outer coating: weigh the silica sol with a particle size of 20-40nm, the solvent and the second additive according to the above proportions and add ...
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Abstract
The invention provides a scaly coating composition and a preparation method thereof, and a scaly coating and a preparation method thereof. The scaly coating composition comprises a bottom coating material comprising 12-18% of silica sol, 80-88% of a solvent and 0.5-1% of a first auxiliary agent, and an outer coating material comprising 30-42% of silica sol, 12-17% of boron / bismuthate glass powder, 10-15% of iron oxide ash, 5-8% of aluminum oxide, 6-8% of ceramic microbeads, 10-15% of other fillers, 5-20% of a solvent and 1-2% of a second auxiliary agent. The method comprises the following steps: coating a metal base material with the prime coating material, naturally drying to obtain a prime coating, coating the outer surface of the prime coating with the outer coating material, naturally drying to form microcracks, and heating and curing to obtain a rigid scaly outer coating. The coating system developed by the scheme can bear multiple high-temperature cyclic impacts, and has good high-temperature resistance and corrosion resistance.
Description
technical field [0001] The invention belongs to the technical field of special functional materials, and in particular relates to a scaly coating composition and a preparation method thereof, a scaly coating and a preparation method thereof. Background technique [0002] The inner wall of the sea-based launcher needs to withstand high-temperature gas erosion, and the highest instantaneous high temperature can reach more than 1000°C. After the high-temperature gas erosion, seawater is immediately poured in, and metal materials are prone to obvious high-temperature oxidation and corrosion forms such as immersion in seawater. [0003] For the high temperature resistant anti-corrosion coating system, foreign countries have carried out many years of research. The heat-resistant paint of Narmco company in the United States named Imidifel850 is based on polybenzimidazole. This product has excellent high-temperature strength and can withstand 539°C in the short term, but it is more ...
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IPC IPC(8): C09D1/00C09D7/61C09D7/20C09D5/28C09D5/08
CPCC09D1/00C09D7/61C09D7/70C09D7/20C09D5/18C09D5/28C09D5/08
Inventor 陈翔庄海燕叶志民
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP