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A kind of solvent-free temperature-resistant epoxy phenolic anticorrosion coating and preparation method thereof

A technology of epoxy phenolic and anti-corrosion coatings, which is applied in the field of coatings and can solve problems such as low coating efficiency, high VOC, and large environmental pollution

Active Publication Date: 2022-05-27
无锡中油瑞德防腐科技(靖江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the common epoxy phenolic coatings in the prior art with low volume solid content, high VOC, low coating efficiency and great environmental pollution.

Method used

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  • A kind of solvent-free temperature-resistant epoxy phenolic anticorrosion coating and preparation method thereof
  • A kind of solvent-free temperature-resistant epoxy phenolic anticorrosion coating and preparation method thereof
  • A kind of solvent-free temperature-resistant epoxy phenolic anticorrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The composition of component A according to the mass fraction is:

[0041]

[0042] The preparation method of modified silica micropowder:

[0043] After diluting propyltrimethoxysilane with ethanol to a mass concentration of 30%, spray it into the 800-mesh silicon micropowder that has been in the high-speed stirring device (the amount of silane is 1.0% of the silicon micropowder), and stir for 20 minutes. Drying at 110°C to remove solvent and moisture to obtain modified silicon micropowder with oil absorption ≤18g / 100g.

[0044] Preparation of Component A

[0045] F51 epoxy phenolic resin needs to be baked and heated to 50 ℃ in advance. Add E51 epoxy resin, core-shell toughening agent (30%), hyperbranched resin, hyperdispersant, defoamer, and leveling agent into the paint mixing kettle. After stirring evenly, add titanium dioxide and modified silicon powder. Stir at high speed for 30 minutes, fineness ≤ 75um, add preheated F51 epoxy phenolic resin, then add rheol...

Embodiment 2

[0058]The composition of component A according to the mass fraction is:

[0059]

[0060] The preparation methods of the modified silicon micropowder and the A component are the same as those in Example 1.

[0061] The composition of component B according to the mass fraction is:

[0062] Modified aromatic amine 350 parts

[0063] Modified fatty amine Ancamide 2766 650 parts

[0064] The modified aromatic amine is composed of:

[0065] E51 100 servings

[0066] DDM 35 servings

[0067] Ruetasolv DI 10 servings

[0068] The preparation methods of DDM-modified aromatic amine prepolymer and component B are the same as those in Example 1.

[0069] A:B=4:1.

Embodiment 3

[0071] The composition of component A according to the mass fraction is:

[0072]

[0073] The preparation methods of the modified silicon micropowder and the A component are the same as those in Example 1.

[0074] The composition of component B according to the mass fraction is:

[0075] Modified aromatic amine 250 parts

[0076] Modified fatty amine Ancamide 2766 750 parts

[0077] The modified aromatic amine is composed of:

[0078] E51 100 servings

[0079] 40 servings of DDM

[0080] Ruetasolv DI 20 copies

[0081] The preparation methods of DDM-modified aromatic amine prepolymer and component B are the same as those in Example 1.

[0082] A:B=4:1.

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Abstract

The invention belongs to the technical field of coatings, and specifically discloses a solvent-free temperature-resistant epoxy phenolic anticorrosion coating and a preparation method thereof. Screen or modify, reduce the viscosity of the coating, and finally obtain a solvent-free epoxy phenolic temperature-resistant anti-corrosion coating that can be operated for more than 2 hours. It not only meets the environmental protection requirements of VOC, but also facilitates the coating construction and improves the production efficiency. At the same time, the glass transition temperature of the epoxy phenolic coating is further improved, the temperature resistance of the coating is enhanced, and the prepared coating has good adhesion, flexibility and impact resistance. Obtain a good balance of mechanical properties and temperature and chemical resistance of the paint film.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a solvent-free temperature-resistant epoxy phenolic anti-corrosion coating and a preparation method thereof. Background technique [0002] The difficulty of solvent-free epoxy phenolic coatings is that the viscosity of epoxy phenolic resin is too high and the fluidity is very poor, so it is difficult to process into solvent-free epoxy phenolic coatings. The volume solid content of existing phenolic coatings is generally 50-60%. Such products have low viscosity and simple construction, but have high VOC content and low film thickness at one time, which are not suitable for the requirements of efficient and environmentally friendly coating. [0003] Solvent-free phenolic epoxy coatings have extremely low VOC emissions, but have high viscosity, and the operating time is less than 30 minutes. When spraying, it is necessary to strictly control the spraying time, or use mu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/04C09D163/00C09D5/08C09D7/65C09D7/61C09D7/62
CPCC09D163/04C09D163/00C09D5/08C09D7/65C09D7/61C09D7/62C08K2003/2241C08L2205/02C08L2205/035C08L63/00C08L101/005C08L9/00C08L9/06C08K3/22C08K9/06C08K3/36C08L63/04
Inventor 钟广义曹兵
Owner 无锡中油瑞德防腐科技(靖江)有限公司
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