High-temperature-resistant inorganic hole sealing agent for thermal spraying coating and preparation method of high-temperature-resistant inorganic hole sealing agent

A thermal spraying, high temperature resistant technology, used in coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of poor penetration of the sealing agent, insufficient sealing depth, and poor adhesion, and achieve good UV resistance and resistance. High temperature performance, avoidance of brittle failure, effect of excellent permeability

Inactive Publication Date: 2021-04-23
王维伦
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing sealing agent has problems such as insufficient sealing depth, high temperature resistance, and easy embrittlement.
Use inorganic sol to replace the solid fun

Method used

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  • High-temperature-resistant inorganic hole sealing agent for thermal spraying coating and preparation method of high-temperature-resistant inorganic hole sealing agent

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Effect test

Example Embodiment

[0036]The present invention also provides a method for preparing a high temperature-resistant inorganic sealing agent for thermal spray coating, including the following steps:

[0037]Take the equivalent inorganic functional sol and rare earth sol, heated to 50 to 80 ° C, after this temperature is completely dissolved, the inorganic film forming agent is added, stirred and uniform, and then add the stabilizer, fully mixed, adjust the pH To 2.5 ~ 5, the hot spray coating was obtained with high temperature inorganic sealing agents.

[0038]The present invention also provides a method of using a high temperature-resistant inorganic sealing agent for a thermal spray coating, including the following steps:

[0039]A. The workpiece of the heat spray coating is 30 to 60 min at 50 to 60 ° C, and the mixed inorganic sealing agent is uniformly applied to the surface of the workpiece, the coating method is atmospheric spray, brush or impregnation;

[0040]B, stand for 30 ~ 60min, so that the sealing agent...

Example Embodiment

[0044]EXAMPLES Preparation of Heat Temperature Inorganic Sealing Dissipings for the thermal spray coating of the present invention

[0045]The specific steps are as follows:

[0046](1) Preparation of inorganic film films, 300 g of phosphoric acid, 80 g of aluminum hydroxide, 3GB2O3, Magnesium oxide 200g, 465GH2O, the reaction generates 1000 g colorless transparent solution A;

[0047](2) Add 500 g of Al Sol, 500 g of Zr sol, 250g TiO in order to the container2Sol, 125 g of a phosphate sol, 125 g of a phosphate sol, heated to 50 ° C, uniformly stirred, and slowly add solution A to solution B, and 125 g of chromic anhydride, stir until the solution is uniform.

[0048]The plasma sprayed Al2O3 ceramic coating is performed by the above-described sealing agent, the steps are as follows:

[0049]Step 1, the workpiece of the heat spray coating is preheated at 60 ° C for 30 min, and the mixing of the inorganic sealing agent is uniformly applied to the surface of the workpiece surface, the coating method ...

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Abstract

The invention belongs to the technical field of thermal spraying corrosion prevention, and particularly relates to a high-temperature-resistant inorganic hole sealing agent for a thermal spraying coating and a preparation method of the high-temperature-resistant inorganic hole sealing agent. Aiming at the problems of insufficient hole sealing depth, no high-temperature resistance, easiness in embrittlement and the like of an existing hole sealing agent, the invention provides the high-temperature-resistant inorganic hole sealing agent for the thermal spraying coating. The high-temperature-resistant inorganic hole sealing agent comprises the following components in percentage by weight: 30-40 percent of inorganic film-forming agent, 40-60 percent of inorganic functional sol, 1-10 percent of rare earth sol and 1-10 percent of stabilizer. The invention further provides a preparation method and a use method of the hole sealing agent. The hole sealing agent has better permeability, the hole sealing effect can be achieved more quickly, and the hole sealing depth can be increased; and meanwhile, the adhesive force is better, the toughness of the coating is better, and brittle failure after hole sealing is avoided. The invention provides a hole sealing agent with more excellent performance for the industry, and the hole sealing agent has very good economic benefits.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion thermal spraying, and in particular relates to a high-temperature-resistant inorganic sealing agent for thermal spraying coatings and a preparation method thereof. Background technique [0002] Thermal spraying coating is to heat the thermal spraying material to a plastic or molten state, and then undergo the acceleration of compressed air, so that the restricted particle beam impacts on the surface of the substrate, adheres to the surface of the substrate, and then cools and accumulates to form a Layered coating. The characteristics of the thermal spraying process determine that there are more or less pores in the coating, and the corrosive medium reaches the surface of the protected substrate through the pores, causing chemical or electrochemical corrosion between the coating and the substrate, resulting in cracking, peeling off of the coating, and eventually Coating fails. Therefore, r...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/61C09D5/34C09D5/08
CPCC09D1/00C09D5/08C09D5/18C09D5/34C09D7/61
Inventor 王维伦
Owner 王维伦
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