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A kind of environment-friendly waterborne two-component epoxy coating and preparation method thereof

A water-based two-component, epoxy coating technology, used in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of large human injury and environmental protection, reduce harmful gas emissions, fast curing speed, Good anti-rust performance

Active Publication Date: 2016-11-16
AVIC BIAM NEW MATERIALS TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention proposes an environment-friendly water-based two-component epoxy coating and a preparation method thereof, which are used to solve the problems in the prior art that the water-based epoxy coating is harmful to the human body and not environmentally friendly

Method used

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  • A kind of environment-friendly waterborne two-component epoxy coating and preparation method thereof

Examples

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Embodiment 1

[0033] An environmentally friendly water-based two-component epoxy coating, consisting of 400g component A and 100g component B;

[0034] A component includes the following components: 200g of ethylenediamine modified curing agent (corresponding to 50% by weight), 120g of water (corresponding to 30% by weight), 8g of foam-breaking polysiloxane solution (corresponding to 30% by weight). 2%, the non-volatile content in the foam-breaking polysiloxane solution is 15%), modified polysiloxane type leveling agent 2g (equivalent to 0.5% by weight, in modified polysiloxane type leveling agent The non-volatile matter is 30%), low molecular weight polycarboxylic acid polymer hydroxyl ammonium salt solution type wetting and dispersing agent 4g (corresponding to 1% by weight, the non-volatile matter in the low molecular weight polycarboxylic acid polymer hydroxyl ammonium salt solution 60%), urea-modified polyurethane solution type anti-sagging aid 4.8g (equivalent to 1.2% by weight, where...

Embodiment 2

[0041] An environmentally friendly water-based two-component epoxy coating, consisting of 400g component A and 100g component B;

[0042] A component includes the following components: 120g of ethylenediamine modified curing agent (corresponding to 30% by weight), 160g of water (corresponding to 40% by weight), 0.08g of foam-breaking polysiloxane solution (corresponding to 40% by weight) Percentage 0.02%, the non-volatile content in the foam-breaking polysiloxane solution is 15%), modified polysiloxane type leveling agent 12g (equivalent to weight percentage 3%, modified polysiloxane type leveling agent The non-volatile matter in is 30%), low molecular weight polycarboxylic acid polymer hydroxyl ammonium salt solution type wetting and dispersing agent 12g (corresponding to weight percent 3%, the nonvolatile content in low molecular weight polycarboxylic acid polymer hydroxyl ammonium salt solution part is 60%), 0.8g (equivalent to 0.2% by weight, non-volatile matter in which i...

Embodiment 3

[0049] An environmentally friendly water-based two-component epoxy coating, consisting of 400g component A and 100g component B;

[0050] The following components are included in the A component: ethylenediamine modified curing agent 80g (corresponding to 20% by weight), 128g of water (corresponding to 32% by weight), 4g of foam-breaking polysiloxane solution (corresponding to 20% by weight) 1%, the non-volatile matter in the foam-breaking polysiloxane solution is 15%), modified polysiloxane type leveling agent 8g (equivalent to 2% by weight, in modified polysiloxane type leveling agent The non-volatile matter is 30%), low molecular weight polycarboxylic acid polymer hydroxyl ammonium salt solution type wetting and dispersing agent 20g (corresponding to weight percent 5%, the non-volatile matter in the low molecular weight polycarboxylic acid polymer hydroxyl ammonium salt solution 60%), urea-modified polyurethane solution type anti-sagging aid 16g (equivalent to weight percen...

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Abstract

The present invention proposes an environment-friendly water-based two-component epoxy coating, which is composed of component A and component B with a weight ratio of 4:1; component A includes the following components in weight percentage: aliphatic modified amine 20-50% curing agent, 30-40% water, 0.02-2% defoamer, 0.5-3% leveling agent, 1-5% wetting and dispersing agent, 0.2-4% anti-sag additive, Concentration accelerator 0.3-1.5%, bio-environmental protection anti-corrosion filler 5-15% and body filler 10-20%; B component includes the following components in weight percentage: epoxy resin 65-80% and active epoxy diluent 20% -35%. Compared with the prior art, the water resistance and corrosion resistance of the paint film obtained by the environment-friendly water-based two-component epoxy coating proposed by the present invention have been greatly improved, and the fast curing speed at low temperature can meet the needs of the anti-corrosion field. More importantly, it is environmentally friendly and non-toxic.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an environment-friendly water-based two-component epoxy paint and a preparation method thereof. Background technique [0002] Water-based epoxy coatings are coatings that completely or mainly use water as a solvent or dispersant. As a new type of environmentally friendly coating, it is an important research direction for water-based coatings. In order to improve the anti-corrosion performance of existing water-based epoxy coatings, it is necessary to add a large amount of harmful fillers such as iron red and medium chrome yellow. Although these fillers have good anti-corrosion performance, they are very harmful to the human body during the production and use of coatings. In addition, in order to improve the film-forming properties of the paint film, it is necessary to add film-forming aids. These film-forming aids are mostly alcohols, ethers, and esters. Although they a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 魏薇师华杨振波白华栋崔晓黎韩斌许少华高婷陈红婷
Owner AVIC BIAM NEW MATERIALS TECH ENG