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A kind of highly corrosion-resistant epoxy resin aqueous dispersion and preparation method thereof

A technology with high corrosion resistance and epoxy resin, which is applied in the direction of epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of uneven quality, poor stability of high molecular weight epoxy emulsion, and insufficient anti-corrosion performance, so as to improve weather resistance properties, strengthening toughness, good acid and alkali resistance

Active Publication Date: 2019-02-05
HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are many kinds of water-based epoxy resins on the market, and the good and bad are mixed. Compared with the mature oil-based epoxy resins, the common problems are: insufficient anti-corrosion performance, poor stability of high-molecular-weight epoxy emulsions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、2、3

[0028] The preparation method of embodiment 1,2,3 comprises the following steps:

[0029] (a) Weigh novolac epoxy resin into the reaction kettle, add diluent, stir at 150°C for 30min, and the stirring speed is 300rpm;

[0030] (b) After stirring evenly, pass nitrogen and cool down to 70°C, add methyldiethanolamine, keep warm for 3 hours, and cool to room temperature after the reaction is complete to obtain a modified novolac epoxy resin;

[0031] (c) Add additives, organic solvents, water, and water-based polyurethane emulsion to the modified novolac epoxy resin, and stir at room temperature for 2-2.5 hours at a stirring speed of 400 rpm.

Embodiment 1

[0033] A high corrosion resistance epoxy resin water dispersion is prepared from the following weight component raw materials:

[0034] Novolac epoxy resin 50Kg;

[0035] Thinner 40 Kg;

[0036] Compound organic solvent 15 Kg;

[0037] Inhibitor 2 Kg;

[0038] Emulsifier 1 Kg;

[0039] Water-based polyurethane emulsion 8 Kg;

[0040] Methyldiethanolamine 10 Kg;

[0041] Water 100 Kg.

[0042] The composite organic solvent is composed of the following raw materials in weight percentage: 15% isopropanol, 15% methyl ethyl ketone, 30% diacetone alcohol, 25% diethylene glycol butyl ether, and 15% propylene glycol butyl ether.

Embodiment 2

[0044] A high corrosion resistance epoxy resin water dispersion is prepared from the following weight component raw materials:

[0045] Novolac epoxy resin 60Kg;

[0046] Thinner 50 Kg;

[0047] Compound organic solvent 30Kg;

[0048] Inhibitor 3Kg;

[0049] Emulsifier 2Kg;

[0050] Water-based polyurethane emulsion 15Kg;

[0051] Methyldiethanolamine 12Kg;

[0052] Water 85 Kg.

[0053] The composite organic solvent is composed of the following raw materials in weight percent: 20% isopropanol, 10% methyl ethyl ketone, 25% diacetone alcohol, 22% diethylene glycol butyl ether, and 23% propylene glycol butyl ether.

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PUM

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Abstract

The invention discloses high-corrosion-resisting epoxy resin aqueous dispersion and a preparation method thereof. The high-corrosion-resisting epoxy resin aqueous dispersion is prepared from the following raw materials in parts by weight: 50 to 60 parts of novolac epoxy resin, 15 to 30 parts of compound organic solvent, 3 to 5 parts of auxiliary agent, 30 to 50 parts of diluent, 8 to 15 parts of waterborne polyurethane emulsion, 10 to 15 parts of methyldiethanolamine and 70 to 100 parts of water. The high-corrosion-resisting epoxy resin aqueous dispersion has advantages of better storage stability, corrosion resistance and mechanical property, and is suitable for the field of heavy-duty anti-corrosion coatings for containers.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an aqueous dispersion of highly corrosion-resistant epoxy resin and a preparation method thereof. Background technique [0002] With the development of modern society, the improvement of human living standards, the gradual awakening of energy conservation and environmental protection awareness, and the rapid development of polymer science, the requirements for environmental protection are becoming more and more stringent. [0003] With the formulation of the local standard of Guangdong Province "Volatile Organic Compound Emission Standards for Container Manufacturing Industry", and the national taxation department levying consumption tax on paint products with high VOC content; the comprehensive water-based coating of containers is becoming more and more urgent. [0004] It can be foreseen that for a long time in the future, the development of environmentally friendly water-based...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L75/04C08K5/17C09D163/00C09D175/04C09D7/63C09D5/08
CPCC08L63/00C09D5/08C09D163/00C08L75/04C08K5/17
Inventor 周学军
Owner HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD