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Aqueous anticorrosive coating and preparation method thereof

An anti-corrosion coating and water-based technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of single resin function, inability to combine weather resistance and film-forming function, and meet environmental protection requirements and reaction methods. Mature, excellent water resistance effect

Inactive Publication Date: 2017-10-03
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the invention provides a kind of water-based anticorrosion coating and its preparation method, described this water-based anticorrosion coating and its preparation method to solve the relatively single function of the resin in the prior art, the weather resistance performance Technical problems that cannot be combined with film-forming functions

Method used

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  • Aqueous anticorrosive coating and preparation method thereof

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Embodiment 1

[0085] A water-based anti-corrosion coating, calculated in parts by weight, its raw material composition and content are as follows:

[0086] Hydrophilic modified aliphatic polyisocyanate curing agent 10 parts

[0087] Long-lasting water-based composite fluororesin 100 parts

[0088] Leveling agent 0.05 parts

[0089] 1 part wetting agent

[0090] 1 part thickener

[0091] 0.2 parts of defoamer

[0092] Coalescing aid 2 parts

[0093] Corrosion inhibitor 20 parts

[0094] 15 parts of pigments and fillers

[0095] Catalyst 0.02 parts

[0096] 20 parts deionized water

[0097] Wherein said hydrophilic modified aliphatic polyisocyanate curing agent is Bayhydur XP 2655 of German Bayer Company;

[0098] Described leveling agent is BYK 346 of BYK company;

[0099] Described wetting agent is the NP-100 of U.S. Dow Company;

[0100] Described thickener is RM 825 of Rohm and Haas Co., Ltd.;

[0101] Described defoamer is the Nopco NXZ of German Henkel Company;

[0102] Des...

Embodiment 2

[0118] A water-based anti-corrosion coating, calculated in parts by weight, its raw material composition and content are as follows:

[0119] 40 parts of hydrophilic modified aliphatic polyisocyanate curing agent

[0120] Long-lasting water-based composite fluororesin 120 parts

[0121] Leveling agent 0.1 parts

[0122] Wetting agent 10 parts

[0123] thickener 3 parts

[0124] 1 part defoamer

[0125] Catalyst 1.0 parts

[0126] Corrosion inhibitor 30 parts

[0127] 30 parts of pigments and fillers

[0128] Coalescing aid 5 parts

[0129] 40 parts deionized water

[0130] Wherein said hydrophilic modified aliphatic polyisocyanate curing agent is Bayhydur XP 2655 of German Bayer Company;

[0131] Described leveling agent is BYK 346 of BYK company;

[0132] Described wetting agent is the NP-100 of U.S. Dow Company;

[0133] Described thickener is RM 825 of Rohm and Haas Co., Ltd.;

[0134] Described defoamer is the Nopco NXZ of German Henkel Company;

[0135] The c...

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Abstract

The invention discloses an aqueous anticorrosive coating. The aqueous anticorrosive coating comprises, by weight, 10 to 40 parts of a hydrophilic modified aliphatic polyisocyanate curing agent, 100 to 120 parts of long-acting water-based composite fluorine-containing resin, 0.05 to 0.1 parts of a leveling agent, 1 to 10 parts of a wetting agent, 1 to 3 parts of a thickener, 0.2 to 1 part of a defoamer, 2 to 5 parts of a film forming aid, 20 to 30 parts of a corrosion inhibitor, 15 to 30 parts of a pigment and a filler, 0.02 to 1.0 part of a catalyst and 20 to 40 parts of deionized water. The invention also provides a preparation method of the aqueous anticorrosive coating. The aqueous anticorrosive coating film has high acid-base resistance and artificial accelerated aging resistance, and can be used in the conventional solvent-based polyurethane coating traditional application fields such as automotive, wood, industrial maintenance, plastic and wind power blades and solar cells having high-performance requirements.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a coating, in particular to a water-based anticorrosion coating and a preparation method thereof. Background technique [0002] The market demand and distribution of China's anti-corrosion coatings are mainly concentrated in the following industries: (1) chemical and petrochemical industries; (2) railways, highways and bridges; (3) electric power and energy industries; (4) shipbuilding and container industries (5) Machine tool and machinery industry. Solvent-based anti-corrosion coatings are widely used in marine engineering, petrochemical, pipeline, industrial anti-corrosion coatings and other applications due to their excellent performance. In recent years, due to the concern about environmental protection in various countries around the world, it has become the development trend of coatings to replace solvent-based coatings with water-based coating technology. Compar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/12C08G18/63
CPCC09D175/04C08G18/632C08G18/638C08G2150/90C08K3/32C08K3/34C08K13/02C08K2003/2241C08K2003/328C09D5/08
Inventor 张英强闫雅贤王晨蕾李烨
Owner SHANGHAI INST OF TECH
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