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A dual-cure waterborne epoxy zinc-rich primer

A water-based epoxy zinc-rich, dual-curing technology, used in epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve problems such as difficulty in large-scale use of water-based coatings, reduce media permeability, improve compactness, and improve The effect of product hardness

Active Publication Date: 2018-05-08
福建百花化学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a production method of dual-curing water-based epoxy zinc-rich primer, to solve the technical problem that water-based coatings are difficult to use on a large scale in the field of steel structures, and to completely replace solvent-based coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0027] Specific example one: 10% liquid epoxy resin, 5% co-solvent (such as propylene glycol methyl ether), 0.2% defoamer, 0.5% dispersant (such as SP-100), 0.3% leveling agent (such as BYK346), Anti-settling agent (such as polyamide wax) 0.6%, high-purity (purity 99.9%) zinc powder 83.4%, total 100% as component A of the color paint. 511 # Modified amine adduct 28%, water 32%, propylene styrene emulsion 40%, defoamer 0.2%, total 100.2% as curing agent B component. According to the industry standard HG / T3668-2009 Type II Type 1 standard, the ratio: A:B=4:1, clean water for construction viscosity adjustment, state in the container, uniform state after stirring and mixing; paint film appearance, coating film Appearance, smooth and smooth; non-volatile matter, 81.12%; pot life, 2h; zinc content in dry film 81.12%; surface dry 0.5h; solid dry 6h; impact resistance, 50cm; adhesion, 6.3MPa; salt spray resistance, 600h no Blistering, cracking, peeling and other phenomena.

specific Embodiment 2

[0028] Specific embodiment two: liquid epoxy resin 11%, co-solvent 5%, defoamer 0.2%, dispersant 0.5%, leveling agent 0.3%, anti-settling agent 0.6%, zinc powder 72% (purity 98%), Anti-rust pigment 11%, total 100.6% as component A of color paint. 511 # Modified amine adduct 30%, water 30%, propylene styrene emulsion 40% and defoamer 0.2%, total 100.2% as curing agent B component. The performance is tested according to the industry standard HG / T3668-2009 Type II Type 2 standard, the ratio: A:B=4:1, the construction viscosity is adjusted with clean water, the state in the container is uniform after stirring and mixing; the appearance of the paint film, the coating The appearance of the film is smooth and smooth; non-volatile content, 81.53%; pot life, 2h; zinc content in dry film, 71.02%; surface dry 0.5h; solid dry 6h; impact resistance, 50cm; adhesion, 6.2MPa; salt spray resistance, 400h No blistering, cracking, peeling and other phenomena.

specific Embodiment 3

[0029] Specific embodiment three: liquid epoxy resin 12%, co-solvent 6%, defoamer 0.2%, dispersant 0.6%, leveling agent 0.3%, anti-settling agent 0.6%, zinc powder 62% (purity 98%), Anti-rust pigment 19%, total 100.7% as component A of color paint. 511 #Modified amine adduct 32%, water 28%, propylene styrene emulsion 40% and defoamer 0.2%, total 100.2% as curing agent B component. The performance is tested according to the industry standard HG / T3668-2009 Type II Type 3 standard, the ratio, A:B=4:1; the construction viscosity is adjusted with clean water, the state in the container, and it is in a uniform state after mixing; the appearance of the paint film is flat Smooth; non-volatile content, 80.78%; pot life, 2h; zinc content in dry film, 62.36%; surface dry 0.5h; solid dry 6h; impact resistance, 50cm; adhesion, 6.16MPa; salt spray resistance, 200h without blistering , cracking, peeling and other phenomena.

[0030] Operation process: Add the formula amount of liquid epox...

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PUM

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Abstract

The invention discloses a production method of a dual-curing water-borne zinc-rich epoxy primer. The dual-curing water-borne zinc-rich epoxy primer is prepared from the following raw materials: 8 to 12 percent of liquid epoxy resin, 4 to 9 percent of cosolvent, 0.2 to 0.4 percent of defoamer, 0.4 to 0.8 percent of dispersing agent, 0.3 to 0.6 percent of flatting agent, 0.5 to 1.2 percent of anti-settling agent, 62 to 84 percent of high-purity zinc powder, and 0 to 19 percent of anti-rust pigment, which are 100 percent in total to be used as acolored paintA component; 28 to 32 percent of No. 511 modified amine adduct, 28 to 32 percent of water, and 40 percent of propyl benzene emulsion, which are 100 percent in total to be used as a curing agent B component through adding 0.2 to 0.4 percent of defoamer. The production method of the dual-curing water-borne zinc-rich epoxy primer comprises the following steps of detecting according to the industrial standard HG / T3668-2009II type standard; matching the ratio of A to B to be equal to 4 to 1; stirring and mixing in a container to form a uniform state. The dual-curingwater-borne zinc-rich epoxy primer produced by the invention solves the technical problem that a water-based paint is difficult to use on a large scale in the field of steel structures, and entirely replaces a solvent based coating.

Description

technical field [0001] The invention belongs to the technical field of industrial anticorrosion coatings, and relates to an epoxy zinc-rich primer for dual-curing water-based anticorrosion industrial coatings. Background technique [0002] The water-based zinc-rich primer close to the present invention, such as "water-based epoxy zinc-rich primer and its preparation method" application number: 201210374279.0, discloses water-based epoxy zinc-rich primer and its preparation method, and the water-based epoxy zinc-rich primer consists of Composition of main agent and curing agent, the mass ratio of main agent and curing agent is 4:1; the composition of main agent is: film-forming aid, anti-sedimentation agent 1, anti-settling agent 2, amine epoxy curing agent, dispersion agent, defoamer, filler and zinc powder; the composition of the curing agent is: epoxy emulsion, anti-settling agent three, anti-flash rust agent and deionized water. The preparation method includes the follow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D125/14C09D5/10C09D7/20
CPCC08L2205/03C09D5/106C09D7/20C09D7/40C09D125/14C09D163/00C08L25/14C08L77/00C08K2003/0893C08L63/00
Inventor 吴远光
Owner 福建百花化学股份有限公司