High-temperature-resistance anti-corrosion coating and application thereof in outer wall of industrial boiler
A technology for anti-corrosion coatings and industrial boilers, applied in the direction of anti-corrosion coatings, coatings, outer covers/linings, etc., can solve problems such as being easily corroded, achieve strong adhesion and improve service life
Inactive Publication Date: 2014-09-10
黄中坤
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Problems solved by technology
[0004] Aiming at the shortcoming that the inner wall of the industrial boiler is easily corroded in the prior art, the present invention provides a high temperature resistant anti-corrosion coating and its application on the outer wall of the industrial boiler, the coating can form a protective layer on the outer wall of the industrial furnace, thereby To achieve the purpose of prolonging the service life of industrial furnaces
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Embodiment 1
[0018] One, prepare the high temperature resistant anti-corrosion coating of the present invention
[0019] The high temperature resistant anticorrosion coating of the present invention comprises the following components: bauxite, silicon powder, aluminum sesquioxide, curing agent, suspending agent, adhesive agent, and described curing agent is phenolic resin, and described suspending agent is bentonite, so The adhesive is sodium silicate. The ratio (mass ratio) of various components in this embodiment is: bauxite 20%; silicon powder 8%; Al 2 o 3 5%; phenolic resin 2%; sodium silicate 60%; bentonite 5%. The components are mixed to form a mixture, and the mixture is passed through a high-speed mixer (batches can also be fed) at a speed of 500-1000 rpm for 1 hour, and stirred evenly to make the molecules reach affinity. Then pack into finished containers. The coating can be free from cracks, peel off and resistant to acid and alkali at -20-1500°C.
[0020] 2. Application in...
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The invention provides a high-temperature-resistance anti-corrosion coating and application thereof in an outer wall of an industrial boiler. The coating comprises the following components: bauxite, silicon powder, aluminum sesquioxide, a curing agent, a suspending agent and an adhesive. The coating can exert the advantages of matched materials, and has the advantages of durability, strong adhesion, impact resistance, anti-corrosion property and the like. In practical use, the coating needs to be sprayed mechanically layer by layer, and sundries on the surface of an object to be sprayed must be cleaned completely before spraying. With the adoption of the coating material provided by the invention, the anti-corrosion and anti-oxidation problems of the surfaces of the tube wall and the surface of the fireproof lining inside a combustion chamber cavity of a high-temperature vapor boiler can be solved, so the service life is greatly prolonged.
Description
technical field [0001] The invention relates to a coating material and its application, in particular to a high temperature resistant anti-corrosion coating and its application on the outer wall of an industrial boiler. Background technique [0002] In the prior art, most of the high-temperature-resistant coatings commonly used on the inner wall of boilers are formed by manual brushing. The film layer is relatively thin, and most of the products painted are water-soluble mixed liquids. Afterwards, the surface affinity with the protected object is small, the gap between molecules is large, and the strength is low, and it will fall off after repeated heating and cooling. However, if the artificial coating is thicker and the cracking is more serious, the shedding will be more serious and the adhesion will be smaller; and if the cracking and cracking are serious, it will lead to thermal radiation intrusion, which cannot protect the protective object well, and cannot achieve the ...
Claims
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Inventor 黄中坤
Owner 黄中坤