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Finishing coat of waterborne coiled steel coating and preparation method of finishing coat

A coil and coating technology, applied in anti-corrosion coatings, polyester coatings, coatings, etc., can solve problems such as restricting the development of water-based coil coatings, difficult to achieve weather resistance, etc., and achieve good performance, fullness, and adhesion of cured products. good effect

Active Publication Date: 2019-03-15
南通科顺建筑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current water-based coil coatings on the market are difficult to achieve the comprehensive properties such as hardness, T-bending, and weather resistance required by solvent-based coil coatings, which greatly restricts the development of water-based coil coatings.

Method used

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  • Finishing coat of waterborne coiled steel coating and preparation method of finishing coat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A water-based coil coating finish paint, the mass ratio of each component is: 20 parts of water-based polyester resin, 50 parts of anti-rust slurry, 7 parts of amino resin, 0.1 part of acid catalyst, 0.25 parts of wetting agent, leveling 0.2 parts of antifoaming agent, 0.15 parts of antifoaming agent, 2 parts of adhesion promoter, 0.3 parts of wetting and dispersing agent, 3 parts of ethylene glycol monobutyl ether, 2.2 parts of n-butanol, 5 parts of ethanol, 2 parts of anti-settling agent, matting Powder 1.5 parts, deionized water 6 parts, pH regulator 0.3 parts.

[0051]Among them, the weight ratio of each component of the antirust slurry is: 22 parts of water-based polyester resin, 2 parts of zinc phosphate, 5 parts of aluminum tripolyphosphate, 3 parts of talcum powder, 34.7 parts of titanium dioxide and 5 parts Titanium iron powder, 15 parts of deionized water, 5 parts of ethylene glycol monobutyl ether, 3 parts of n-butanol, 5 parts of wetting and dispersing agent...

Embodiment 2

[0074] A water-based coil coating finish paint, the mass ratio of each component is: 25 parts of water-based polyester resin, 45 parts of antirust slurry, 7 parts of amino resin, 0.1 part of acid catalyst, 0.25 parts of wetting agent, leveling 0.2 parts of antifoaming agent, 0.15 parts of antifoaming agent, 2 parts of adhesion promoter, 0.3 parts of wetting and dispersing agent, 3 parts of ethylene glycol monobutyl ether, 2.2 parts of n-butanol, 2 parts of ethanol, 2 parts of anti-settling agent, matting Powder 1.5 parts, deionized water 9 parts, pH regulator 0.3 parts.

[0075] Among them, the weight ratio of each component of the antirust slurry is: 22 parts of water-based polyester resin, 2 parts of zinc phosphate, 5 parts of aluminum tripolyphosphate, 3 parts of talcum powder, 34.7 parts of titanium dioxide and 5 parts Titanium iron powder, 15 parts of deionized water, 5 parts of ethylene glycol monobutyl ether, 3 parts of n-butanol, 5 parts of wetting and dispersing agent...

Embodiment 3

[0090] A water-based coil coating finish paint, the mass ratio of each component is: 20 parts of water-based polyester resin, 50 parts of antirust slurry, 10 parts of amino resin, 0.1 part of acid catalyst, 0.25 parts of wetting agent, leveling 0.2 parts of antifoaming agent, 0.15 parts of antifoaming agent, 2 parts of adhesion promoter, 0.3 parts of wetting and dispersing agent, 3 parts of ethylene glycol monobutyl ether, 2.2 parts of n-butanol, 2 parts of ethanol, 2 parts of anti-settling agent, matting Powder 1.5 parts, deionized water 6 parts, pH regulator 0.3 parts.

[0091] Among them, the weight ratio of each component of the antirust slurry is: 22 parts of water-based polyester resin, 2 parts of zinc phosphate, 5 parts of aluminum tripolyphosphate, 3 parts of talcum powder, 34.7 parts of titanium dioxide and 5 parts Titanium iron powder, 15 parts of deionized water, 5 parts of ethylene glycol monobutyl ether, 3 parts of n-butanol, 5 parts of wetting and dispersing agen...

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Abstract

The invention relates to the field of waterborne coatings and particularly discloses a finishing coat of a waterborne coiled steel coating and a preparation method of the finishing coat, wherein the finishing coat of the waterborne coiled steel coating comprises the following components: a waterborne polyester resin, a rust-proof sizing agent, an amino resin, an acid catalyst, a wetting agent, a levelling agent, a defoamer, an adhesion promoter, a wetting dispersant, an anti-settling agent, a PH regulator, a cosolvent and water. the provided finishing coat of the coiled steel coating is a waterborne product, the VOC (volatile organic compounds) content is very low, the environment pollution is small, the performance of a T-bend is greatly improved, the T-bend does not crack in winter and is anti-sticking in summer, and the physical and mechanical properties equivalent to those of the solvent based coating are achieved.

Description

technical field [0001] The invention relates to the field of water-based coatings, in particular to a water-based coil coating finish paint and a preparation method thereof. Background technique [0002] Coil coatings include coil steel coatings and coil aluminum coatings. It coats the paint on the surface of steel plates and aluminum plates by roller coating, and then makes pre-coated coils. It has beautiful appearance, bright colors, high strength, and processing Advantages such as convenience, can also reduce costs and reduce pollution, so it has been widely used. Coil coatings are composed of base materials, crosslinking agents, pigments and fillers, additives and volatile components, and can be divided into primers, backcoats and topcoats according to their uses. Generally, aluminum only needs a single coat, while galvanized steel and cold rolled steel need primer and top coat. [0003] At present, coil coatings are still dominated by solvent-based coatings. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/08C09D7/61C09D7/63C09D7/65
CPCC08K2003/2241C08K2003/327C08L2205/025C08L2205/035C09D5/08C09D167/00C09D7/61C09D7/63C09D7/65C08L67/00C08L61/32C08L83/12C08L77/00C08K13/02C08K3/32C08K3/34C08K3/22C08K5/17
Inventor 黄思墨龚兴宇黄莉恒李雪梅顾家豪胡全超
Owner 南通科顺建筑新材料有限公司
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