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Water-based air-drying epoxy resin and preparation method thereof

A dry epoxy resin and epoxy resin technology, used in coatings, anti-corrosion coatings, etc., can solve the problems of short construction activation period, poor anti-corrosion performance, high shipping cost, and achieve good dry and wet adhesion and anti-corrosion performance. excellent effect

Active Publication Date: 2021-01-29
上海广沣科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the development and application of domestic water-based epoxy resins are just in their infancy, and there are still many shortcomings. The current commercially available water-based epoxy resins are mainly used in combination with water-based amine curing agents to prepare two-component water-based epoxy coatings to replace Solvent-based epoxy resin coatings. After the current water-based epoxy resin is configured as a two-component coating, there are problems such

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  • Water-based air-drying epoxy resin and preparation method thereof
  • Water-based air-drying epoxy resin and preparation method thereof

Examples

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Effect test

Embodiment 1

[0046] This embodiment provides a water-based self-drying epoxy resin, including the following components:

[0047] Acrylic acid 6g, soybean oil 15g, 1,6-hexanediamine 4.4g, ethylene glycol monobutyl ether 33g, styrene 3g, butyl acrylate 10g, hydroxyethyl acrylate 7g, epoxy resin E44 35g, diphenyl peroxide Formyl (BPO) 1.2g, n,n-dimethylethanolamine 3g, deionized water 110g.

[0048] The preparation method of the water-based self-drying epoxy resin of the present embodiment is as follows:

[0049] S1. Put 35g of epoxy resin E44 and 4.4g of 1,6-hexamethylenediamine into the reaction bottle, blow nitrogen, heat up to 75°C and keep it warm for 3.5 hours;

[0050] S2. Put 15g of soy oil into the reaction bottle, raise the temperature to 160°C, keep the temperature for 3 hours, and detect the acid value is less than 1mgKOH / g, cool down to 105°C, and add 30g of ethylene glycol monobutyl ether;

[0051] S3, after mixing 3 g of styrene, 10 g of butyl acrylate, 7 g of hydroxyethyl ac...

Embodiment 2

[0054] This embodiment provides a water-based self-drying epoxy resin, including the following components:

[0055] Acrylic acid 6g, soybean oil 15g, 1,6-hexamethylenediamine 3g, ethylene glycol monobutyl ether 33g, styrene 3g, butyl acrylate 10g, hydroxyethyl acrylate 7g, epoxy resin E44 35g, diphenylmethane peroxide Acyl (BPO) 1.2g, n,n-dimethylethanolamine 3g, deionized water 110g.

[0056] The preparation method of the water-based self-drying epoxy resin of the present embodiment is as follows:

[0057]S1. Put 35g of epoxy resin E44 and 3g of 1,6-hexamethylenediamine into the reaction bottle, blow nitrogen, heat up to 70°C and keep it warm for 3 hours;

[0058] S2. Put 15g of soy-oleic acid into the reaction bottle, raise the temperature to 160°C, keep the temperature for 3 hours, and detect the acid value is less than 1mgKOH / g, cool down to 105°C, and add 30g of ethylene glycol monobutyl ether;

[0059] S3. After mixing 3 g of styrene, 10 g of butyl acrylate, 7 g of hyd...

Embodiment 3

[0062] This embodiment provides a water-based self-drying epoxy resin, including the following components:

[0063] Acrylic acid 6g, soybean oil 15g, 1,6-hexanediamine 5.8g, ethylene glycol monobutyl ether 33g, styrene 3g, butyl acrylate 10g, hydroxyethyl acrylate 7g, epoxy resin E44 35g, diphenyl peroxide Formyl (BPO) 1.2g, n,n-dimethylethanolamine 3g, deionized water 110g.

[0064] The preparation method of the water-based self-drying epoxy resin of the present embodiment is as follows:

[0065] S1. Put 35g of epoxy resin E44 and 5.8g of 1,6-hexamethylenediamine into the reaction bottle, blow nitrogen, heat up to 65°C and keep it warm for 3 hours;

[0066] S2. Put 15g of soy oil into the reaction bottle, raise the temperature to 170°C, keep the temperature for 2 hours, and detect the acid value is less than 1mgKOH / g, cool down to 105°C, and add 30g of ethylene glycol monobutyl ether;

[0067] S3, after mixing 3 g of styrene, 10 g of butyl acrylate, 7 g of hydroxyethyl acry...

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Abstract

The invention discloses a water-based air-drying epoxy resin which comprises the following components in parts by mass: 20-70 parts of epoxy resin, 0.1-5 parts of an amine chain extender, 7-21 parts of vegetable oil fatty acid, 1-9 parts of an acrylic monomer, 5-25 parts of an acrylate monomer, 0.02-2 parts of an initiator, 10-50 parts of a solvent, 0.1-3 parts of a neutralizer and 50-150 parts ofwater. The water-based self-drying epoxy resin disclosed by the invention can realize room-temperature self-drying, the dry and wet adhesive force of the product is relatively good, and the corrosionresistance of the product is excellent.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-based self-drying epoxy resin and a preparation method thereof. Background technique [0002] At present, the development and application of domestic water-based epoxy resins are just in their infancy, and there are still many shortcomings. The current commercially available water-based epoxy resins are mainly used in combination with water-based amine curing agents to prepare two-component water-based epoxy coatings to replace Solvent-based epoxy resin coatings, after the current water-based epoxy resin is configured into a two-component coating, there are problems such as short activation period, cumbersome construction and high cost. In this regard, some companies or research institutions have started the research and development of one-component water-based self-drying epoxy resin. According to the published data, there are still many shortcomings in the prepared one-component...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F220/18C08F212/08C08F220/20C08F220/06C09D151/08C09D5/08
CPCC08F283/105C09D151/08C09D5/08C08F220/1804C08F212/08C08F220/20C08F220/06
Inventor 陈超
Owner 上海广沣科技有限公司