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 weather resistance, single function of water-based resin, and only film-forming function, etc., to achieve mature reaction methods, Significant technical progress, excellent water resistance effect

Inactive Publication Date: 2017-09-01
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 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 The function is relatively single, only has weather resistance or only has the technical problem of film-forming function

Method used

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  • Waterborne anticorrosive coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0078] A water-based anticorrosive coating, calculated in parts by weight, and its raw material composition and content are as follows:

[0079] 5 parts of hydrophilic modified aliphatic polyisocyanate curing agent;

[0080] 60 parts of water-based resin;

[0081] Leveling agent 0.05 parts;

[0082] Wetting agent 1 part;

[0083] Thickener 1 part;

[0084] 0.2 parts of defoamer;

[0085] 2 parts of film forming aids;

[0086] 0.02 parts of catalyst;

[0087] 20 parts deionized water;

[0088] The hydrophilic modified aliphatic polyisocyanate curing agent is Bayhydur XP 2655 of Bayer, Germany;

[0089] The said leveling agent is BYK 346 of BYK company;

[0090] The wetting agent is NP-100 of Dow Company;

[0091] The thickener is RM 825 from Rohm and Haas Co., Ltd.;

[0092] The defoamer is Nopco NXZ from Henkel, Germany;

[0093] The said film-forming aid is dipropylene glycol butyl ether from Dow Chemical Company;

[0094] The catalyst is dibutyl tin dilaurate;

[0095] The above-mentioned prepara...

Embodiment 2

[0108] A water-based anticorrosive coating, calculated in parts by weight, and its raw material composition and content are as follows:

[0109] 8 parts of hydrophilic modified aliphatic polyisocyanate curing agent;

[0110] 70 parts of water-based resin;

[0111] 0.1 part of leveling agent;

[0112] 10 parts of wetting agent;

[0113] Thickener 3 parts;

[0114] 1 part of defoamer;

[0115] 1.0 part of catalyst;

[0116] 5 parts of film forming aids;

[0117] 40 parts deionized water;

[0118] The hydrophilic modified aliphatic polyisocyanate curing agent is Bayhydur XP 2655 of Bayer, Germany;

[0119] The said leveling agent is BYK 346 of BYK company;

[0120] The wetting agent is NP-100 of Dow Company;

[0121] The thickener is RM 825 from Rohm and Haas Co., Ltd.;

[0122] The defoamer is Nopco NXZ from Henkel, Germany;

[0123] The said film-forming aid is dipropylene glycol butyl ether from Dow Chemical Company;

[0124] The catalyst is stannous octoate;

[0125] The above-mentioned preparatio...

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Abstract

The invention provides a waterborne anticorrosive coating, which is prepared from the following raw materials in parts by weight: 5-8 parts of hydrophilic modified fatty group polyisocyanate curing agent, 100-120 parts of waterborne resin, 0.05-0.1 part of flatting agent, 1-10 parts of wetting agent, 1-3 parts of thickening agent, 0.2-1 part of antifoaming agent, 2-5 parts of film forming auxiliary agent, 20-30 parts of corrosion inhibitor, 15-30 parts of pigment filler, 0.02-1.0 part of catalyst and 20-40 parts of deionized water. The invention also provides a preparation method for the waterborne anticorrosive coating. The waterborne anticorrosive coating has higher film hardness, gloss and a contact angle with water after the film is sprayed, and the waterborne anticorrosive coating can be used in the traditional application fields of conventional solvent type polyurethane coating, wherein the traditional application fields include high-performance technical fields including automobiles, woodware, industrial maintenance, plastic and wind turbine blades, solar cells and the like.

Description

Technical field [0001] The invention belongs to the field of polymer materials, and relates to a paint, specifically a water-based anticorrosive paint and a preparation method thereof. Background technique [0002] The market demand and distribution of our national defense corrosion coatings are mainly concentrated in the following industries: (1) chemical and petrochemical industries; (2) railways, highways and bridges; (3) power and energy industries; (4) shipping and container industries (5) Machine tool and machinery industry. Solvent-based anti-corrosion coatings are widely used in marine engineering, petrochemical industry, pipelines, industrial anti-corrosion coatings and other applications due to their excellent performance. In recent years, due to the concerns of countries around the world for environmental protection, water-based coating technology to replace solvent-based coatings has become the development trend of coatings. Compared with solvent-based coatings, wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/12
CPCC08K3/34C08K3/346C08K2003/2241C08K2003/2272C08K2003/265C08K2003/3045C09D5/08C09D175/04
Inventor 张英强单昌礼闫雅贤王晨蕾李烨
Owner SHANGHAI INST OF TECH
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