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Preparation method of high-temperature resistant coating containing sulfur, silicon and nitrogen

A high-temperature-resistant coating technology, which is applied in the field of high-temperature-resistant coating preparation, can solve the problems of coating damage, large electronegativity difference of carbon elements, limited improvement of protective performance, etc., and achieve excellent anti-corrosion performance.

Inactive Publication Date: 2014-11-12
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic elements that are usually introduced include sulfur, silicon, nitrogen, boron, molybdenum, titanium, etc. After titanium, molybdenum and other metal elements are introduced into the coating resin molecules, the heat resistance of the coating can be greatly improved, but its protective performance is improved. This is because the electronegativity difference between metal elements and carbon elements in organic molecules is large, mainly forming ionic bonds, or the chemical bonds are mainly ionic, which makes the coating more susceptible to external corrosive media (acid alkali) damage

Method used

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  • Preparation method of high-temperature resistant coating containing sulfur, silicon and nitrogen

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of Coating A Component:

[0026] In a four-neck flask equipped with a stirrer, a thermometer and a reflux condenser, add 200 grams of xylene and 1.5 moles of ethylenediamine that have been dewatered in advance and stir evenly, then slowly add 0.5 moles of dimethyldichlorosilane and For a solution of 0.5 moles of dichlorodiphenyl sulfone, the rate of addition is based on the fact that the reaction temperature does not exceed 30°C. After the dropwise addition, react freely for 30-45 minutes, then raise the temperature to 100 degrees Celsius at a rate of 1 degree Celsius per minute, and react after 2 hours, neutralize the reaction product with 160 grams of 50% sodium hydroxide solution, and separate the water layer. After washing the resin layer twice with 200 grams of water, reflux and dehydrate the resin layer for 30 minutes at 120 degrees Celsius and a vacuum greater than 0.5 atmospheres to obtain coating component A.

[0027] Preparation of coating compone...

Embodiment 2

[0031] Preparation of Coating A Component:

[0032] In a four-necked flask equipped with a stirrer, a thermometer and a reflux condenser, add 300 grams of xylene and 2.5 moles of m-xylylenediamine that have been dehydrated in advance and stir evenly, then slowly add 0.5 moles of methyltrichlorosilane and 0.5 mole of dichlorodiphenyl sulfone solution, the rate of addition is based on the fact that the reaction temperature does not exceed 30°C. After the dropwise addition, react freely for 30-45 minutes, then raise the temperature to 100 degrees Celsius at a rate of 1 degree Celsius per minute, and react after 2 hours, neutralize the reaction product with 200 grams of 50% sodium hydroxide solution, and separate the water layer. After washing the resin layer twice with 300 grams of water, reflux and dehydrate the resin layer for 30 minutes at 120 degrees Celsius and a vacuum greater than 0.5 atmospheres to obtain coating component A.

[0033] Preparation of coating component B: ...

Embodiment 3

[0037] Preparation of Coating A Component:

[0038] In a four-neck flask equipped with a stirrer, a thermometer and a reflux condenser, add 150 grams of xylene and 1.6 moles of m-xylylenediamine, which have been dehydrated in advance, and stir evenly, then slowly add 0.2 moles of phenyltrichlorosilane and 0.5 mole of dichlorodiphenyl sulfone solution, the rate of addition is based on the fact that the reaction temperature does not exceed 70°C. After the dropwise addition, react freely for 30-45 minutes, then raise the temperature to 120 degrees Celsius at a rate of 1 degree Celsius per minute, and react after 2 hours, neutralize the reaction product with 128 grams of 50% sodium hydroxide solution, and separate the water layer. After washing the resin layer twice with 200 grams of water, reflux and dehydrate the resin layer for 30 minutes at 120 degrees Celsius and a vacuum greater than 0.5 atmospheres to obtain the coating component A.

[0039] Preparation of coating componen...

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Abstract

The invention provides a preparation method of a high-temperature resistant coating containing sulfur, silicon and nitrogen and relates to a method for preparing a high-temperature resistant coating. The method comprises the following processes: step 1: 4,4-dichloro diphenylsulfone, a polybasic amine, a silane, a solvent and a neutralizing agent react for 2-3 hours at 0 DEG C-50 DEG C, and then by-products are removed to obtain a component A containing sulfur, silicon and nitrogen; step 2: a glycidyl amine type epoxy resin, a pigment, a filler, a leveling agent, a defoaming agent, a dispersing agent and a solvent are mixed and grinded to obtain a component B; step 3: component A and component B are mixed in proportion to obtain a mixture, and then the mixture is coated onto the protected metal surface and cured by heating for 2-3 hours at 100 DEG C and 1-2 hours at 200 DEG C to obtain the high-temperature resistant protecting coating. The invention uses an organic and inorganic hybrid technology to produce the novel coating, and the coating can not only resist high temperature, but also show excellent anti-corrosion property at high temperature.

Description

technical field [0001] The invention relates to a preparation method of a high temperature resistant coating, in particular to a preparation method of a high temperature resistant coating containing sulfur, silicon and nitrogen. Background technique [0002] As a protective material, coating is widely used in machinery, electronics, aerospace, chemical industry, construction and other fields. Even in our daily life, coating is used all the time. The functionality and decoration of coatings span a wide range of fields, and many sciences and technologies are supporting the improvement of coating performance and the expansion of application fields. [0003] With the expansion of the application field of coatings, some conventional coatings gradually cannot meet the new application requirements, including the temperature resistance of coatings. The vast majority of coatings we use are organic because they are simple to make and easy to use. But because it is an organic coating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D183/16C09D183/14C08G77/62C08G77/54
Inventor 毕文军
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY