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High-solid-content epoxy resin coating and preparation method thereof

A technology of epoxy resin coating and epoxy resin, which is applied in the direction of epoxy resin coating, anti-corrosion coating, coating, etc., can solve the health hazards of environmental ecological construction workers, environmental pollution and other problems, achieve environmental protection, and have broad application prospects , The effect of reducing organic matter emissions

Active Publication Date: 2022-02-15
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional solvent-based epoxy coatings will emit a large amount of VOC during production, construction, and curing, causing environmental pollution and causing great harm to the environment and ecology and the health of construction workers.

Method used

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  • High-solid-content epoxy resin coating and preparation method thereof
  • High-solid-content epoxy resin coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of high solid epoxy paint, comprising by weight parts:

[0034] Component A: 9.6 parts of epoxy resin diluent 1,4-cyclohexanedimethanol diglycidyl ether, 41.8 parts of epoxy resin E51, 38.6 parts of chain extender polyaspartate resin F420, solvent two 10 parts of toluene and n-butanol (xylene:n-butanol=3:1).

[0035] Component B: 90 parts of solvent-free cardanol curing agent (1101 of Zhejiang Wansheng Co., Ltd.), 8 parts of solvent xylene and n-butanol (xylene: n-butanol = 3:1), epoxy resin accelerator DMP 0.01 part of -30, 2 parts of additives (wetting and dispersing agent BYK-333 and defoamer BYK-054=3:1).

[0036] Its preparation method comprises the following steps:

[0037] A component:

[0038] Step 1: Add epoxy resin and epoxy resin diluent to a four-necked flask, add chain extender dropwise under high-speed stirring at a temperature of 70°C, add dropwise for 2.5 hours, fully react, keep warm for 2 hours, and obtain improved epoxy resin ;

[0039] St...

Embodiment 2

[0044] A kind of high solid epoxy paint, comprising by weight parts:

[0045] Component A: 4.7 parts of epoxy resin diluent hexamethylene glycol diglycidyl ether, 47.4 parts of epoxy resin E51, 37.9 parts of chain extender polyaspartic ester resin F420, solvent xylene and n-butanol (di Toluene:n-butanol=3:1) 10 parts.

[0046] Component B: 80 parts of solvent-free cardanol curing agent (1102 of Zhejiang Wansheng Co., Ltd.), 8 parts of solvent xylene and n-butanol (xylene: n-butanol = 3:1), epoxy resin accelerator K54 0.015 parts, 2 parts of additives (wetting and dispersing agent BYK-333 and defoamer BYK-054=3:1).

[0047] Its preparation method comprises the following steps:

[0048] A component:

[0049] Step 1: Add epoxy resin and epoxy resin diluent to a four-necked flask, add chain extender dropwise under high-speed stirring at a temperature of 70°C, add dropwise for 2.5 hours, fully react, keep warm for 2 hours, and obtain improved epoxy resin ;

[0050] Step 2: Inc...

Embodiment 3

[0055] A kind of high solid epoxy paint, comprising by weight parts:

[0056] Component A: 7.9 parts of epoxy resin diluent ethylene glycol diglycidyl ether, 36.3 parts of epoxy resin E51, 11.1 parts of epoxy resin E20, 34.7 parts of chain extender polyaspartate resin F520, 10 parts of solvent xylene and n-butanol (xylene: n-butanol=3:1);

[0057]Component B: 95 parts of solvent-free cardanol curing agent (1101 of Zhejiang Wansheng Co., Ltd.), 8 parts of solvent xylene and n-butanol (xylene: n-butanol = 3:1), epoxy resin accelerator DMP 0.01 part of -30, 2 parts of additives (wetting and dispersing agent BYK-334 and defoamer BYK-151=3:1).

[0058] Its preparation method comprises the following steps:

[0059] A component:

[0060] Step 1: Add epoxy resin and epoxy resin diluent to a four-necked flask, add chain extender dropwise under high-speed stirring at a temperature of 70°C, add dropwise for 2.5 hours, fully react, keep warm for 2 hours, and obtain improved epoxy resin...

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Abstract

The invention belongs to the field of environment-friendly epoxy resin coatings, and particularly relates to a high-solid-content epoxy resin coating and a preparation method thereof. The high-solid-content epoxy resin coating comprises the following components in parts by weight: a component A: 1-10 parts of an epoxy resin diluent, 40-50 parts of epoxy resin, 30-40 parts of a chain extender and 10-15 parts of a first solvent; the component B comprises the following components in parts by weight: 90-95 parts of an epoxy resin (cardanol type) curing agent, 0.010-0.015 part of an epoxy resin accelerant, 5-8 parts of a second solvent and 2 parts of an auxiliary agent; wherein the weight ratio of the component A to the component B is 1:(0.5-1). The solid content of the high-solid-content epoxy resin coating can exceed 80% while the solvent content is low. Besides, the low VOC content of the paint can effectively reduce the emission of organic matters in the production and construction process, so that the paint is safe and reliable, is beneficial to environmental protection, has good water resistance and corrosion resistance, and has wide application prospects.

Description

technical field [0001] The invention belongs to the field of environment-friendly epoxy resin paint, and in particular relates to a high-solid epoxy resin paint and a preparation method thereof. Background technique [0002] Traditional solvent-based coatings often contain a large amount of volatile organic compounds (VOCs). Coatings are one of the important sources of VOCs. At present, industrial VOC emissions are huge, and the emissions of coatings industry account for a large proportion. Therefore, controlling VOC emissions in coatings and developing environmental protection Type coatings have become extremely important to environmental protection, which is in line with people's pursuit of good ecology. [0003] Epoxy resin is an important component in the field of coatings, with good anti-corrosion, heat resistance, wear resistance and other properties. Traditional solvent-based epoxy coatings will emit a large amount of VOC during production, construction, and curing, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D5/08
CPCC09D163/00C09D5/08C08L63/00
Inventor 闫福安冯振强
Owner WUHAN INSTITUTE OF TECHNOLOGY