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Graphene modified two-component waterborne polyurethane anticorrosive coating and preparation method thereof

A water-based polyurethane and graphene modification technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve toxic and harmful problems, and achieve the effects of improving environmental protection performance, prolonging corrosion service period, and excellent anti-corrosion performance.

Inactive Publication Date: 2019-12-24
东莞烯世传奇新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a graphene-modified two-component water-based polyurethane anti-corrosion coating and its preparation method, aiming to solve the problem of improving the anti-corrosion performance of the coating by adding toxic and harmful anti-rust fillers to the two-component water-based polyurethane anti-corrosion coating

Method used

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  • Graphene modified two-component waterborne polyurethane anticorrosive coating and preparation method thereof
  • Graphene modified two-component waterborne polyurethane anticorrosive coating and preparation method thereof
  • Graphene modified two-component waterborne polyurethane anticorrosive coating and preparation method thereof

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preparation example Construction

[0055] On the other hand, the embodiments of the present invention provide a method for preparing a graphene-modified two-component waterborne polyurethane anti-corrosion coating, comprising the following steps:

[0056] S01. take each component according to the formula of graphene modified two-component waterborne polyurethane anticorrosion coating of the present invention;

[0057] S02. After the first mixing treatment of the formula A component deionized water, water-based dispersant, and substrate wetting agent, add water-based graphene slurry, environmentally friendly anti-rust fillers, and other pigments and fillers for the second mixing treatment; add disinfectant Foaming agent carries out the 3rd mixed treatment, makes mixed slurry;

[0058] S03. Grinding the mixed slurry until the fineness reaches ≤30um to obtain a grinding slurry;

[0059] S04. Add multifunctional adjustment aids, anti-flash rust agents, and water-based hydroxyacrylic acid emulsions to the grinding ...

Embodiment 1

[0071] A graphene-modified two-component water-based polyurethane anti-corrosion coating, including A component and B component;

[0072] Taking the total weight of the A component as 100%, the A component includes the following components in the following weight percentages: deionized water 12wt%, water-based graphene slurry 1wt%, water-based hydroxyacrylic acid emulsion ( Bayhydrol A2470) 57wt%, substrate wetting agent 0.25wt%, water-based dispersant 1.6wt%, thickener 0.25wt%, defoamer 0.2wt%, defoamer 0.1wt%, multi-functional adjustment aid 0.2wt %, leveling agent 0.2wt%, anti-flash rust agent 1wt%, aluminum tripolyphosphate 2.55wt%, molybdenum modified zinc phosphate 2.5wt%, barium sulfate 3wt%, mica powder 4wt%, titanium dioxide 10wt%, film-forming Auxiliary 4.4wt%. Wherein, the water-based graphene in the water-based graphene slurry is modified graphene, and the modified graphene is a non-covalent bond functionalization composed of graphene and a planar aromatic ring ad...

Embodiment 2

[0081] A graphene-modified two-component water-based polyurethane anti-corrosion coating, including A component and B component;

[0082] Based on the total weight of the A component as 100%, the A component includes the following components in the following weight percentages: deionized water 11wt%, water-based graphene slurry 1.5wt%, water-based hydroxyacrylic acid emulsion Wanhua (Antkote2042) 63wt%, substrate wetting agent 0.2wt%, water-based dispersant 1.75wt%, thickener 0.22wt%, defoamer 0.3wt%, defoamer 0.1wt%, multi-functional adjustment assistant 0.2wt%, leveling agent 0.23wt%, anti-flash rust agent 1wt%, iron-titanium powder 3, molybdenum modified zinc phosphate 3wt%, mica powder 2.7wt%, titanium dioxide 7wt%, coalescent 4.8wt%. Wherein, the water-based graphene in the water-based graphene slurry is modified graphene, and the modified graphene is a non-covalent bond functionalization composed of graphene and a planar aromatic ring adsorbed on the surface of the graph...

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Abstract

The invention provides a graphene modified two-component waterborne polyurethane anticorrosive coating. The graphene modified two-component waterborne polyurethane anticorrosive coating comprises a component A and a component B, wherein the component A is prepared from deionized water, water-based graphene slurry, water-based hydroxyl acrylic emulsion, a water-based dispersing agent, a base material wetting agent, a defoaming agent, a foam eliminating agent, an anti-flash-rust agent, a thickening agent, a multifunctional adjusting agent, a coalescing agent, environment-friendly anti-rust filler and other pigments and fillers; and the component B comprises a water-based isocyanate curing agent and a cosolvent. According to the graphene modified waterborne polyurethane anticorrosive paint disclosed by the invention, the corrosion resistance, weather resistance, heat resistance, water resistance and flexibility of the paint can be remarkably improved. The coating has excellent corrosion resistance, weather resistance and water resistance, can be used as finish paint in the field of corrosion resistance of building steel structures, engineering machinery, bridge steel structures, containers and the like, and prolongs the corrosion service cycle of the steel structures.

Description

technical field [0001] The invention belongs to the technical field of water-based anti-corrosion coatings, in particular to a graphene-modified two-component water-based polyurethane anti-corrosion coating and a preparation method thereof. Background technique [0002] With the improvement of environmental protection regulations in various countries and the enhancement of environmental protection awareness, the emission of volatile organic compounds (VOC) and harmful air pollutants (HAP) in traditional solvent-based coatings has become more and more restricted, and environmentally friendly water-based coatings have become Current trends in the coatings industry. [0003] One-component waterborne polyurethane coatings have high elongation at break and appropriate strength, but the hardness, appearance, and chemical resistance of the paint film are not ideal. Two-component waterborne polyurethane is composed of hydroxyl resin composed of polyol emulsion or dispersion and hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/62
CPCC08K9/04C09D5/08C09D175/04C08K3/042C09D7/62
Inventor 朱林江孙学栋
Owner 东莞烯世传奇新材料研究院有限公司
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