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Graphene-modified waterborne anticorrosive coating

A graphene modification and anti-corrosion coating technology, applied in anti-corrosion coatings, conductive coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor impact resistance, easy to generate static electricity, high insulation, and achieve strong aging resistance , good adhesion, good aging resistance

Active Publication Date: 2017-04-26
广东科迪新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane has the advantages of high hardness, wear resistance, and excellent adhesion, so it is widely used in the fields of coatings, adhesives, foam plastics, inks, and rubber. However, polyurethane has poor impact resistance, easy to foam when exposed to moisture, General polyurethane has high insulation and is prone to static electricity, which limits its application in some fields
[0006] At present, resins with a single property can no longer meet the requirements of the coatings market. The graphene polyurethane modified alkyd resin coating has the special properties of graphene and polyurethane, and the hardness of the paint film, water resistance, and antistatic performance are all very good. improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of graphene modified water-based alkyd resin, its preparation process is as follows:

[0034] a. Put 1.8 parts of dried graphene oxide and 2.2 parts of dimethylolpropionic acid into a four-port reactor equipped with a thermometer, condenser and stirrer to raise the temperature to a certain temperature, and then add 9.5 parts of polyisocyanate dropwise at a constant speed , the dropping time is 1h, and the reaction is continued for 2h to obtain the active intermediate A, which is ready for use;

[0035]b. In a four-port reactor equipped with a thermometer, condenser, water separator, and agitator, add 8.0 parts of vegetable oil fatty acid, 2.5 parts of phthalic anhydride, 1.0 part of trimethylolpropane, and 3.5 parts of xylene in sequence according to the weight percentage of the formula. 3.5 parts, 3.5 parts of isophthalic acid, 4.0 parts of benzoic acid and 4.0 parts of neopentyl glycol, slowly heated to 140 ° C, started slow stirring, after 1.5 hours, the tempe...

Embodiment 2

[0037] A kind of graphene modified water-based alkyd resin, its preparation process is as follows:

[0038] a. Put 2.0 parts of dried graphene oxide and 2.2 parts of dimethylolpropionic acid into a four-port reactor equipped with a thermometer, condenser and stirrer to raise the temperature to a certain temperature, and then add 10.0 parts of polyisocyanate dropwise at a constant speed , the dropping time is 1h, and the reaction is continued for 2h to obtain the active intermediate B for use;

[0039] b. In a four-port reactor equipped with a thermometer, condenser, water separator, and agitator, add 11.0 parts of vegetable oil fatty acid, 3.0 parts of phthalic anhydride, 1.5 parts of trimethylolpropane, and 3.0 parts of xylene in sequence according to the weight percentage of the formula 3.5 parts of isophthalic acid, 4.0 parts of benzoic acid and 4.5 parts of neopentyl glycol, slowly heating up to 140°C, stirring at a slow speed, raising the temperature to 180°C after 1.5h, ...

Embodiment 3

[0041] A graphene-modified water-based anti-corrosion coating, which consists of 42.0 parts of graphene polyurethane modified alkyd resin emulsion I, 3.5 parts of propylene glycol, 5.0 parts of propylene glycol monobutyl ether, 8.0 parts of zinc phosphate, and composite iron by weight percentage. 6 parts of titanium powder, 5 parts of mica powder, 2 parts of talc powder, 0.3 parts of leveling agent, 2.5 parts of dispersing agent, 0.2 parts of wetting agent, 0.3 parts of defoaming agent, 0.5 parts of thickening and anti-settling agent, anti-flash corrosion agent 0.5 parts, pH regulator 0.2 parts, deionized water 24.0 parts.

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Abstract

The invention relates to a grapheme-modified waterborne anticorrosive coating. The grapheme-modified waterborne anticorrosive coating is composed of a grapheme-modified waterborne alkyd resin, pigment and filler, a cosolvent, a leveling agent, a dispersing agent, a wetting agent, a defoaming agent, a thickening and anti-settling agent, a flash rust inhibitor, a pH value regulator and deionized water, wherein the graphene polyurethane-modified waterborne alkyd resin is prepared from vegetable oil or fatty acid, organic acid anhydride, dimethylolpropionic acid, polyol, grapheme, polyisocyanate and deionized water through a reaction. The prepared grapheme-modified waterborne anticorrosive coating integrates the advantages of grapheme and polyurethane, has properties like high hardness, good adhesion, good chemical resistance, antistatic performance, corrosion resistance, aging resistance and good mechanical properties, and is endowed with excellent corrosion resistance, aging resistance, excellent mechanical properties and antistatic performance.

Description

technical field [0001] The invention relates to a graphene-modified water-based anticorrosion coating, which belongs to the technical field of water-based functional coatings. Background technique [0002] Coating is an indispensable material for protecting infrastructure in daily life. It is widely used in buildings, various hardware, decoration of industrial products, machinery, vehicles, ships, wood and other fields. Alkyd resin coatings have the advantages of cheap and easy-to-obtain raw materials, good coating adhesion, brightness, good fullness, variety, good wettability and dispersibility to pigments, etc., and have good construction properties. has always played a very important role. However, traditional alkyd resin coatings contain a large amount of organic solvents, which have a serious impact on the human body and the ecological environment. [0003] With people's pursuit of a higher quality of life, higher requirements are placed on the environmental performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D175/06C09D5/08C09D5/24C08G18/80C08G18/68C08G18/66C08G18/30C08G18/34
CPCC08G18/30C08G18/683C08G18/8048C09D5/08C09D5/24C09D175/06C09D175/14
Inventor 许钧强陆明张武刘敏
Owner 广东科迪新材料科技有限公司
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