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Conjugate anticorrosive waterborne epoxy coating and preparation method thereof

A water-based epoxy coating and conjugation technology, applied in the field of coatings, can solve the problems of poor mechanical properties, easy to fall off, low surface toughness of the coating film, etc. Effect

Inactive Publication Date: 2017-09-26
董艺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a conjugated anti-corrosion water-based epoxy coating and a preparation method thereof for the coating film formed by traditional water-based epoxy coatings in the prior art with low surface toughness, poor mechanical properties and easy to fall off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of conjugated anticorrosion waterborne epoxy paint, it is made up of the raw material of following weight part:

[0022] Tetramethyldisiloxane 14, acrylic acid 20, catalyst 0.0.8, epoxy resin E44 130, dodecyltrimethylammonium chloride 4, diacetone acrylamide 2, pentaerythritol 15, 2-mercaptobenzimidazole 0.6, 1 octylisothiazolinone, 1 sodium benzoate, 12 diatomaceous earth, 7 diacetone alcohol, 0.2 ethylene thiourea, 0.4 aluminum ammonium sulfate.

[0023] The catalyst is lithium oxide.

[0024] A kind of preparation method of conjugated anticorrosion waterborne epoxy paint, comprises the following steps:

[0025] (1) Take diacetone alcohol, raise the temperature to 70°C, add 2-mercaptobenzimidazole, keep stirring for 20 minutes, and obtain the alcohol solution;

[0026] (2) Take diatomite, calcinate at 800°C for 2 hours, discharge and cool, grind into fine powder, mix with octylisothiazolinone, add to the above-mentioned pentaerythritol, stir evenly, add tetra...

Embodiment 2

[0033] A kind of conjugated anticorrosion waterborne epoxy paint, it is made up of the raw material of following weight part:

[0034] Tetramethyldisiloxane 10, acrylic acid 15, catalyst 0.06, epoxy resin E44 100, dodecyltrimethylammonium chloride 3, diacetone acrylamide 1, pentaerythritol 10, 2-mercaptobenzimidazole 0.3, Octylisothiazolinone 0.4, Sodium Benzoate 0.8, Diatomaceous Earth 10, Diacetone Alcohol 5, Ethylene Thiourea 0.1, Aluminum Ammonium Sulfate 0.3.

[0035] The catalyst is lithium oxide.

[0036] A kind of preparation method of conjugated anticorrosion waterborne epoxy paint, comprises the following steps:

[0037] (1) Take diacetone alcohol, raise the temperature to 65°C, add 2-mercaptobenzimidazole, keep stirring for 10-20 minutes, and obtain an alcohol solution;

[0038] (2) Take diatomaceous earth, calcinate at 700-800°C for 1 hour, discharge and cool, grind into fine powder, mix with octylisothiazolinone, add to the above-mentioned pentaerythritol, stir ...

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Abstract

The invention discloses a conjugate anticorrosive waterborne epoxy coating which is prepared from the following raw materials in parts by weight: 10-14 parts of tetramethyldisiloxane, 15-20 parts of acrylic acid, 0.06-0.08 part of catalyst, 100-130 parts of epoxy resin E44, 3-4 parts of dodecyl trimethyl ammonium chloride, 1-2 parts of diacetone acrylamide, 10-15 parts of pentaerythritol, 0.3-0.6 part of 2-mercapto benzimidazole, 0.4-1 part of octyl isothiazolinone, 0.8-1 part of sodium benzoate, 10-12 parts of kieselguhr, 5-7 parts of diacetone alcohol, 0.1-0.2 part of ethylene thiourea and 0.3-0.4 part of ammonium aluminum sulfate. The coating disclosed by the invention can form a stable film on the surface of a metal substrate and can realize a perfect anticorrosive property and has the advantages of strong adhesion, good film surface toughness, excellent mechanical properties and high peel resistance strength.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a conjugated anti-corrosion water-based epoxy coating and a preparation method thereof. Background technique [0002] Epoxy resins are used in anti-corrosion coatings with liquid resins accounting for the largest share, but most of the coatings used in industry are solvent-based coatings. Conventional solvent-based coatings mostly use aromatic hydrocarbons, esters, alcohols, ketones, etc. as solvents , these solvents have varying degrees of toxicity, and the volatiles are directly discharged into the air, causing serious environmental pollution. With the enhancement of people's awareness of environmental protection, new anti-corrosion coatings such as powder coatings, solvent-free coatings and water-based coatings, which do not contain organic solvents or low VOC, have been developed one after another. Due to the harsh curing conditions of powder coatings, its development is limited; sol...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D5/08C09D7/12C08G59/17
CPCC09D163/10C08G59/1466C08K3/34C08K5/098C08K5/19C08K9/00C08K9/04C08K9/06C08K13/06C09D5/08
Inventor 董艺
Owner 董艺
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