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Steel surface composite coating and preparation method thereof

A composite coating and steel surface technology, applied in the field of steel anti-corrosion, can solve the problems of weak bonding force of steel substrate, lower tribological performance and corrosion resistance of epoxy resin coating, coating erosion, etc., and achieve excellent corrosion resistance Excellent performance and performance

Inactive Publication Date: 2020-03-27
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, coating epoxy resin on the surface of steel is the main way to solve this problem at present, but in practical application, epoxy resin coating has problems such as weak bonding force with steel substrate and poor wear resistance.
These problems will cause the coating to be eroded and destroyed under some extreme working conditions, reducing the tribological properties and corrosion resistance of epoxy resin coatings

Method used

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  • Steel surface composite coating and preparation method thereof
  • Steel surface composite coating and preparation method thereof
  • Steel surface composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A composite coating on a steel surface, comprising the following raw materials: 2g of 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine, 1.3g of graphene oxide, water-based acrylic modified 30 g of epoxy resin, 2 g of methyl tetrahydrophthalic anhydride, 2 g of methyl nadic anhydride, 1 g of pyromellitic anhydride.

[0032] The preparation method of above-mentioned composite coating on steel surface, comprises the following steps:

[0033] S1. Weigh 2 g of 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine, dissolve it in an appropriate amount of isopropanol and stir until completely dissolved;

[0034] S2. Weigh 1.3 g of graphene oxide and dissolve it in an appropriate amount of deionized water, heat in a water bath at 40° C. and perform magnetic stirring until the graphene oxide is completely dissolved;

[0035] S3. Slowly drop the graphene aqueous solution in step S2 into the 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine isopropanol sol...

Embodiment 2

[0040] A composite coating on steel surface, comprising the following raw materials: 3g of 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine, 1.7g of graphene oxide, water-based acrylic modified 40 g of epoxy resin, 3 g of methyl tetrahydrophthalic anhydride, 3 g of methyl nadic anhydride, 2 g of pyromellitic anhydride.

[0041] The preparation method of above-mentioned composite coating on steel surface, comprises the following steps:

[0042] S1. Weigh 3 g of 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine, dissolve it in an appropriate amount of isopropanol and stir until completely dissolved;

[0043] S2. Weigh 1.7 g of graphene oxide and dissolve it in an appropriate amount of deionized water, heat in a water bath at 40°C and perform magnetic stirring until the graphene oxide is completely dissolved;

[0044] S3. Slowly drop the graphene aqueous solution in step S2 into the 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine isopropanol solutio...

Embodiment 3

[0049] A composite coating on steel surface, comprising the following raw materials: 2.5 g of 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine, 1.5 g of graphene oxide, water-based acrylic modified 35 g of permanent epoxy resin, 2.5 g of methyl tetrahydrophthalic anhydride, 2.5 g of methyl nadic anhydride, and 1.5 g of pyromellitic anhydride.

[0050] The preparation method of above-mentioned composite coating on steel surface, comprises the following steps:

[0051] S1. Weigh 2.5 g of 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-triazine, dissolve it in an appropriate amount of isopropanol and stir until completely dissolved;

[0052] S2. Weigh 1.5 g of graphene oxide and dissolve it in an appropriate amount of deionized water, heat in a water bath at 40° C. and perform magnetic stirring until the graphene oxide is completely dissolved;

[0053] S3. Slowly drop the graphene aqueous solution in step S2 into the 2-tert-butylamino-4-ethylamino-6-methylthio-1,3,5-...

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Abstract

The invention discloses a steel surface composite coating, and belongs to the technical field of steel corrosion prevention. The steel surface composite coating comprises the following raw materials in parts by weight: 20 to 30 parts of 2-tert-butylamino-4-ethylamino-6-methylthio-1, 3, 5-triazine, 13 to 17 parts of graphene oxide, 300 to 400 parts of water-borne acrylic acid modified epoxy resin,20 to 30 parts of methyl tetrahydrophthalic anhydride, 20 to 30 parts of methyl nadic anhydride and 10 to 20 parts of pyromellitic dianhydride. The steel surface composite coating disclosed by the invention is excellent in corrosion resistance, capable of effectively preventing seawater from corroding steel materials, excellent in friction resistance, also excellent in blue-green algae resistance,and suitable for coating the surfaces of pipelines and ships in the ocean.

Description

technical field [0001] The invention relates to the technical field of steel anticorrosion, in particular to a composite coating on the surface of steel and a preparation method thereof. Background technique [0002] Steel is the most widely used metal material in the manufacturing industry. As an important metal material in industry, it can be processed into various friction parts. When steel materials are used as friction parts, they are prone to surface corrosion and wear during operation, which reduces the service life of steel parts. Especially with the development of my country's marine engineering, various cross-sea bridges, port construction, offshore oil and gas field development, marine engineering equipment, ship engineering, submarine pipelines, etc. have sprung up like mushrooms, and steel structure materials have also played an important role in the marine economy. playing an increasingly important role. However, due to the corrosion of seawater and the adhesi...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D7/62C09D5/08C09D5/16C08G59/42
CPCC08G59/4215C08G59/4223C09D5/08C09D5/1687C09D163/10C09D7/62C08K9/04C08K3/042
Inventor 李俊琛
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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