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Anticorrosive mildew-proof water-based epoxy curing agent and preparation method thereof

A water-based epoxy, anti-corrosion and anti-mildew technology, applied in anti-corrosion coatings, epoxy resin coatings, anti-fouling/underwater coatings, etc., can solve the problems of general anti-corrosion and anti-mold performance, expensive raw materials, high cost, etc., to reduce later maintenance cost, improve corrosion resistance, increase the effect of weather resistance

Active Publication Date: 2020-10-16
广州惠顺新材料有限公司
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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 provide an anti-corrosion and mildew-proof water-based epoxy curing agent in order to solve the technical problems that the epoxy coating system composed of the existing water-based epoxy curing agent has general anti-corrosion and mildew-proof performance, and the raw materials are expensive and the cost is high. and its preparation method

Method used

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  • Anticorrosive mildew-proof water-based epoxy curing agent and preparation method thereof
  • Anticorrosive mildew-proof water-based epoxy curing agent and preparation method thereof
  • Anticorrosive mildew-proof water-based epoxy curing agent and preparation method thereof

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Embodiment 1

[0027] This embodiment provides a high anti-corrosion and environment-friendly water-based epoxy curing agent. The components of the curing agent and the quality of each component are as follows:

[0028]

[0029] In the present embodiment, the epoxy value of bisphenol A epoxy resin is 0.4, the molecular weight of polyethylene glycol is 4000, and the mass ratio of m-xylylenediamine and isophoronediamine in the composite crosslinking agent is 14 / 3.

[0030] Present embodiment also provides a kind of preparation method of anticorrosion and mildewproof water-based epoxy curing agent, comprises the following steps:

[0031] (1) Under the condition of stirring at normal temperature, heat 30 grams of polyethylene glycol in a water bath to 50° C. to melt, then add 10 grams of bisphenol A epoxy resin and mix evenly;

[0032] (2) Heat the material in the previous step, and after the temperature rises to 85°C, add 0.007 g of aluminum trichloride ethyl ether solution dropwise, keep w...

Embodiment 2

[0036] This embodiment provides a high anti-corrosion and environment-friendly water-based epoxy curing agent. The components of the curing agent and the quality of each component are as follows:

[0037]

[0038] In the present embodiment, the epoxy value of bisphenol A epoxy resin is 0.48, the molecular weight of polyethylene glycol is 5000, and the mass ratio of m-xylylenediamine and isophoronediamine in the composite crosslinking agent is 12 / 5.

[0039] Present embodiment also provides a kind of preparation method of anticorrosion and mildewproof water-based epoxy curing agent, comprises the following steps:

[0040] (1) Under the condition of stirring at normal temperature, heat 25 grams of polyethylene glycol in a water bath to 60° C. to melt, then add 20 grams of bisphenol A epoxy resin and mix evenly;

[0041] (2) Heat the material in the previous step, add 0.002 g of boron trifluoride ether solution dropwise after the temperature rises to 95°C, keep warm until the...

Embodiment 3

[0045] This embodiment provides a high anti-corrosion and environment-friendly water-based epoxy curing agent. The components of the curing agent and the quality of each component are as follows:

[0046]

[0047]

[0048] In the present embodiment, the epoxy value of the hydrogenated epoxy resin is 0.52, the molecular weight of polyethylene glycol is 6000, and the mass ratio of m-xylylenediamine and isophoronediamine in the compound crosslinking agent is 5 / 3.

[0049] Present embodiment also provides a kind of preparation method of anticorrosion and mildewproof water-based epoxy curing agent, comprises the following steps:

[0050] (1) Under the condition of stirring at normal temperature, heat 36 grams of polyethylene glycol in a water bath to 70 ° C for melting, then add 18 grams of hydrogenated epoxy resin and mix evenly;

[0051] (2) Heat the material in the previous step, and after the temperature rises to 100°C, add 0.004 g of aluminum trichloride ether solution...

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Abstract

The invention discloses an anticorrosive mildew-proof water-based epoxy curing agent and a preparation method thereof. The water-based epoxy curing agent comprises the following components in percentage by mass: 25%-36% of polyethylene glycol, 10%-20% of epoxy resin, 0.002%-0.007% of a catalyst, 5%-10% of a quenching agent, 30%-36% of a compound crosslinking agent, 5%-9% of an active diluent, 3.5%-6% of a solvent and 0.05%-0.2% of a bactericide, wherein the compound crosslinking agent comprises m-xylylene diamine and isophorone diamine in a mass ratio of 5 / 3 to 14 / 3. The water-based epoxy curing agent can effectively improve the corrosion resistance and mildew resistance of a coating, the raw material cost is not high, and the later maintenance cost of the coating is greatly reduced.

Description

technical field [0001] The invention belongs to the field of water-based coatings, and more specifically relates to an anti-corrosion and anti-mildew water-based epoxy curing agent and a preparation method thereof. Background technique [0002] Waterborne epoxy resin with curing agent is widely used as coating. The general epoxy coating system is composed of water-based epoxy resin and water-based epoxy curing agent. plays a key role. The types of epoxy resin curing agents are mainly divided into ionic and non-ionic. The ionic curing agent is a water-based system formed by neutralizing the tertiary amine with an organic acid in the resin. The existing data prove that the organic acid has an effect on the color of the curing agent, the dispersion stability of the filler, the anti-corrosion performance of the coating film, and the inhibition of flash rust. Negative effect; non-ionic curing agent is to introduce non-ionic polyether chain segments into the curing agent to mak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D5/08C09D5/16C08G59/50
CPCC09D163/00C09D5/08C09D5/1687C09D5/14C08G59/5033C08G59/5026C08L2205/03C08L63/00C08L71/02C08K5/47
Inventor 何志威倪青青
Owner 广州惠顺新材料有限公司
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