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Waterborne epoxy zinc-enriched primer for pre-treating container and preparation method thereof

A water-based epoxy zinc-rich and pretreatment technology, applied 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 large solvent volatilization. , to achieve the effect of fast drying, solving environmental pollution and low reactivity

Inactive Publication Date: 2018-06-29
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

[0002] 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 solvent is volatile, causing serious environmental pollution. The solvents used are flammable and explosive. Large and harmful to the health of construction workers
At present, the water-based epoxy zinc-rich primer in the coating line generally has 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-enriched primer for pre-treating container and preparation method thereof
  • Waterborne epoxy zinc-enriched primer for pre-treating container and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment is used for the water-based epoxy zinc-rich primer for 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.

[0024] Put 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.

[0025] Component B (weight): 200kg water-soluble modified amine curing agent, 30kg dispersant, 18kg film-forming aid, 13.5kg fumed silica, 50kg talcum powder, 1350kg zinc powder, 15kg zinc powder protective agent and anti-sedimentation agent 12kg.

[0026] The water-soluble modified amine curing agent adopts the propylene glycol methyl ether solution of the cardanol modified amine curing agent with a solid content of 80% (Cardolite’s NX-8106PM80); High-molecular block copol...

Embodiment 2

[0030] This embodiment is used for the water-based epoxy zinc-rich primer for 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.

[0031] Put 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.

[0032] Component B (weight): 180kg water-soluble modified amine curing agent, 40kg dispersant, 40kg film-forming aid, 20kg fumed silica, 80kg talcum powder, 1600kg zinc powder, 20kg zinc powder protective agent and 20kg anti-sedimentation agent .

[0033] The water-soluble modified amine curing agent adopts the propylene glycol methyl ether solution of the cardanol modified amine curing agent with a solid content of 80% (Cardolite’s NX-8106PM80); High-molecular block copoly...

Embodiment 3

[0037] This embodiment is used for the water-based epoxy zinc-rich primer for 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.

[0038] Put 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.

[0039] B component (weight): water-soluble modified amine curing agent 220kg, dispersant 25kg, film-forming aid 30kg, fumed silica 15kg, talcum powder 60kg, zinc powder 1550kg, zinc powder protective agent 15kg and anti-sedimentation agent 15kg .

[0040] The water-soluble modified amine curing agent adopts the propylene glycol methyl ether solution of the cardanol modified amine curing agent with a solid content of 80% (Cardolite’s NX-8106PM80); High-molecular block copoly...

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Abstract

The invention relates to waterborne epoxy zinc-enriched primer for pre-treating a container and a preparation method thereof. The waterborne epoxy zinc-enriched primer is prepared from a component A and a component B according to the weight ratio of 1 to 6, wherein the component A is prepared from modified bisphenol A type epoxy resin emulsion and a de-foaming agent; the component B is prepared from a water-soluble modified amine curing agent, a dispersant, a film-forming auxiliary agent, fumed silica, talcum powder, zinc powder, a zinc powder protective agent and an anti-settling agent. The waterborne epoxy zinc-enriched primer provided by the invention has the advantages that the roller coating type waterborne epoxy zinc-enriched primer provided by the invention has a long utilization period through reasonable matching; when the waterborne epoxy zinc-enriched primer is continuously and circularly utilized for 16h, the film coating performance is not obviously changed and the VOC (Volatile Organic Compounds) content is lower than 200g / L; the final difficulty of hydration of container coating is effectively solved by the product, and the defects that solvent type pre-treated waterborne epoxy zinc-enriched primer has high VOC content and great pollution and the disadvantages that common waterborne epoxy zinc-enriched primer has a short utilization period and a slow drying speedare effectively overcome.

Description

technical field [0001] The invention belongs to the field of heavy anticorrosion, and in particular relates to a water-based epoxy zinc-rich primer used for container pretreatment and a preparation method thereof. Background technique [0002] 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, the water-based epoxy zinc-rich primer in the coating line generally has defects such as short pot life and slow drying, which are not suitable for the requirements of roller coating pretreatment, which require fast drying and long pot life. [0003] Therefore, it is very necessary to develop a waterborne epoxy zinc-rich primer for container pretreatment, which is suitable for ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/10C09D7/43C09D7/45C09D7/61C09D7/63
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