Waterborne epoxy zinc-rich primer as well as preparation method and application thereof

A water-based epoxy zinc-rich and primer technology, used in epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve problems such as damage to the health of construction workers, flammable and explosive risks of solvents, and serious environmental pollution. To achieve the effect of fast drying, low reactivity and pollution reduction

Active Publication Date: 2022-01-04
江苏德威涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Container coatings are in the stage of conversion from solvent-based to water-based. Many factories currently use solvent-based epoxy zinc-rich primers as pretreatment primers. The solvents evaporate a lot, causing serious environmental pollution. The solvents used are flammable and explosive. Large and harmful to the health of construction workers
At present, water-based epoxy zinc-rich primers in coating lines generally have defects such as short pot life and slow drying, which are not suitable for roller coating pretreatment, which requires fast drying and long pot life.

Method used

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  • Waterborne epoxy zinc-rich primer as well as preparation method and application thereof
  • Waterborne epoxy zinc-rich primer as well as preparation method and application thereof
  • Waterborne epoxy zinc-rich primer as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] This embodiment is used for the waterborne epoxy zinc-rich primer of container pretreatment, wherein, A component (weight): modified bisphenol A type epoxy resin emulsion 199kg and defoamer 1kg, modified bisphenol A type ring The oxygen resin emulsion can be H-502-42W from DIC Company and BYK-024 from BYK Company as the defoamer.

[0034] Add the modified bisphenol A type epoxy resin emulsion and defoamer in proportion, stir at 400-600rpm for 10-15 minutes and mix evenly to prepare component A.

[0035] Component B (weight): water-soluble modified amine curing agent 200kg, dispersant 30kg, film-forming aid 18kg, fumed silica 13.5kg, talcum powder 50kg, zinc powder 1350kg, zinc powder protective agent 15kg and anti-settling agent 12kg.

[0036] The water-soluble modified amine curing agent adopts the propylene glycol methyl ether solution (NX-8106PM80 of Cardolite) of the cardanol modified amine curing agent with a solid content of 80%; Polymer block copolymer dispersa...

Embodiment 2

[0040] The present embodiment is used for the waterborne epoxy zinc-rich primer of container pretreatment, wherein, A component (weight): modified bisphenol A type epoxy resin emulsion 196kg and defoamer 4kg, modified bisphenol A type ring The oxygen resin emulsion can be H-502-42W from DIC Company and BYK-024 from BYK Company as the defoamer.

[0041] Add the modified bisphenol A type epoxy resin emulsion and defoamer in proportion, stir at 400-600rpm for 10-15 minutes and mix evenly to prepare component A.

[0042] Component B (weight): water-soluble modified amine curing agent 180kg, dispersant 40kg, film-forming aid 40kg, fumed silica 20kg, talcum powder 80kg, zinc powder 1600kg, zinc powder protective agent 20kg and anti-settling agent 20kg .

[0043]The water-soluble modified amine curing agent adopts the propylene glycol methyl ether solution (NX-8106PM80 of Cardolite) of the cardanol modified amine curing agent with a solid content of 80%; Polymer block copolymer dis...

Embodiment 3

[0047] The present embodiment is used for the waterborne epoxy zinc-rich primer of container pretreatment, wherein, A component (weight): modified bisphenol A type epoxy resin emulsion 198kg and defoamer 2kg, modified bisphenol A type ring The oxygen resin emulsion can be H-502-42W from DIC Company and BYK-024 from BYK Company as the defoamer.

[0048] Add the modified bisphenol A type epoxy resin emulsion and defoamer in proportion, stir at 400-600rpm for 10-15 minutes and mix evenly to prepare component A.

[0049] Component B (weight): 220kg water-soluble modified amine curing agent, 25kg dispersant, 30kg film-forming aid, 15kg fumed silica, 60kg talcum powder, 1550kg zinc powder, 15kg zinc powder protective agent and 15kg anti-sedimentation agent .

[0050] The water-soluble modified amine curing agent adopts the propylene glycol methyl ether solution (NX-8106PM80 of Cardolite) of the cardanol modified amine curing agent with a solid content of 80%; Polymer block copolym...

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Abstract

The invention relates to a waterborne epoxy zinc-rich primer as well as a preparation method and application thereof. The waterborne epoxy zinc-rich primer is prepared from a component A and a component B in a weight ratio of 1: 6. The component A is composed of a modified bisphenol A epoxy resin emulsion and a defoaming agent. The component B is prepared from a water-soluble modified amine curing agent, a dispersing agent, a coalescing agent, fumed silica, talcum powder, zinc powder, a zinc powder protective agent and an anti-settling agent. The roller coating type waterborne epoxy zinc-rich primer has the advantages that through reasonable matching, the roller coating type waterborne epoxy zinc-rich primer is long in service life, the performance of a coating film is not obviously changed after the roller coating type waterborne epoxy zinc-rich primer is continuously used for 16 hours, and the VOC content is lower than 200 g / L. The product effectively overcomes the defects of high VOC (volatile organic compound) content and serious pollution of a solvent type pretreated epoxy zinc-rich primer and the defects of short service life and slow drying of a common waterborne epoxy zinc-rich primer.

Description

[0001] This application is a divisional application for an invention patent with an application date of December 20, 2017, an application number of 201711383267.3, and an invention title of "A Waterborne Epoxy Zinc-rich Primer for Container Pretreatment and Its Preparation Method". technical field [0002] The invention belongs to the field of heavy anticorrosion, and in particular relates to a water-based epoxy zinc-rich primer and a preparation method and application thereof. Background technique [0003] Container coatings are in the stage of conversion from solvent-based to water-based. Many factories currently use solvent-based epoxy zinc-rich primers as pretreatment primers. The solvents evaporate a lot, causing serious environmental pollution. The solvents used are flammable and explosive. Large and harmful to the health of construction workers. At present, water-based epoxy zinc-rich primers in coating lines generally have defects such as short pot life and slow dryi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61C09D7/63C09D7/45
CPCC09D163/00C09D5/106C08K2003/0893C09D7/61C09D7/63C09D7/45C08K3/36C08K3/08C08K3/34C08K5/06C08K3/346C08K5/54
Inventor 雷振国
Owner 江苏德威涂料有限公司
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