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Waterborne anticorrosive coating and preparation method thereof

A water-based technology for anti-corrosion coatings, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of only having film-forming functions, only having weather resistance, and single functions of water-based resins, and achieves mature reaction methods, Suitable for large-scale production and remarkable technological progress

Inactive Publication Date: 2017-09-08
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 preparation method thereof, described this water-based anticorrosion coating and preparation method thereof will solve the anticorrosion coating topcoat water-based resin in the prior art Technical problems with relatively single function, only weather resistance or only film-forming function

Method used

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  • Waterborne anticorrosive coating and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0088] A water-based anti-corrosion coating, calculated in parts by weight, its raw material composition and content are as follows:

[0089] Hydrophilic modified aliphatic polyisocyanate curing agent 10 parts

[0090] Long-lasting water-based resin 60 parts

[0091] Leveling agent 0.05 parts

[0092] 1 part wetting agent

[0093] 1 part thickener

[0094] 0.2 parts of defoamer

[0095] Coalescing aid 2 parts

[0096] Corrosion inhibitor 20 parts

[0097] 15 parts of pigments and fillers

[0098] Catalyst 0.02 parts

[0099] 20 parts deionized water

[0100] Wherein said hydrophilic modified aliphatic polyisocyanate curing agent is Bayhydur XP 2655 of German Bayer Company;

[0101] Described leveling agent is BYK 346 of BYK company;

[0102] Described wetting agent is NP-100 of U.S. Dow Company;

[0103] Described thickener is RM 825 of Rohm and Haas Co., Ltd.;

[0104] Described defoamer is the Nopco NXZ of German Henkel Company;

[0105] Described film-forming a...

Embodiment 2

[0123] A water-based anti-corrosion coating, calculated in parts by weight, its raw material composition and content are as follows:

[0124] 40 parts of hydrophilic modified aliphatic polyisocyanate curing agent

[0125] Long-lasting water-based resin 70 parts

[0126] Leveling agent 0.1 parts

[0127] Wetting agent 10 parts

[0128] thickener 3 parts

[0129] 1 part defoamer

[0130] Catalyst 1.0 parts

[0131] Corrosion inhibitor 30 parts

[0132] 30 parts of pigments and fillers

[0133] Coalescing aid 5 parts

[0134] 40 parts deionized water

[0135] Wherein said hydrophilic modified aliphatic polyisocyanate curing agent is Bayhydur XP 2655 of German Bayer Company;

[0136] Described leveling agent is BYK 346 of BYK company;

[0137] Described wetting agent is NP-100 of U.S. Dow Company;

[0138] Described thickener is RM 825 of Rohm and Haas Co., Ltd.;

[0139] Described defoamer is the Nopco NXZ of German Henkel Company;

[0140] The corrosion inhibitor is c...

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Abstract

The invention provides a waterborne anticorrosive coating. The waterborne anticorrosive coating is prepared from, by weight, 10-40 parts of a hydrophilic modified aliphatic polyisocyanate curing agent, 100-120 parts of long-term waterborne resin, 0.05-0.1 part of a flatting agent, 1-10 parts of a wetting agent, 1-3 parts of a thickening agent, 0.2-1 part of a deforming agent, 2-5 parts of a coalescing agent, 20-30 parts of a corrosion inhibitor, 15-30 parts of pigments, 0.02-1.0 part of a catalyst and 20-40 parts of deionized water. The invention further provides a preparation method of the waterborne anticorrosive coating. The waterborne anticorrosive coating high in film hardness, luster and contact angle on water can be used in traditional application fields of conventional solvent based polyurethane coatings, of vehicles, wood ware, industrial maintenance and plastic and high-performance technology fields of wind turbine blades, solar cells and the like.

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): C09D175/04C09D5/08C09D7/12C08G18/63C08F291/10C08F291/06
CPCC08F283/06C08F283/10C08G18/63C08G18/632C08K3/34C08K5/06C08K2003/2241C09D5/08C09D175/04
Inventor 张英强闫雅贤王晨蕾李烨
Owner SHANGHAI INST OF TECH
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