CN104231866B - A kind of water corrosion-resistant epoxy paint and preparation method thereof - Google Patents
A kind of water corrosion-resistant epoxy paint and preparation method thereof Download PDFInfo
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- CN104231866B CN104231866B CN201410555656.XA CN201410555656A CN104231866B CN 104231866 B CN104231866 B CN 104231866B CN 201410555656 A CN201410555656 A CN 201410555656A CN 104231866 B CN104231866 B CN 104231866B
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Abstract
The invention belongs to chemical materials and environmental technology field, be specially a kind of water corrosion-resistant epoxy paint and preparation method thereof.Water corrosion-resistant epoxy paint of the present invention comprises A, B two component; Component A comprises: water, aqueous epoxy emulsion, anti-corrosion paint, filler, auxiliary agent, water; B component comprises: water, aminosilane, nano silicon and soluble epoxide solidifying agent.Its preparation method is: by water, part of auxiliary mixing and stirring, progressively adds anti-corrosion paint and other fillers, and high speed shape disperses, and then aqueous epoxy resins and part of auxiliary is stirred, obtains component A; By water, aminosilane and nano silicon mixing high speed dispersion, then add aqueous epoxy curing agent continuation dispersion, through ball milling, namely obtain B component.Water corrosion-resistant epoxy paint of the present invention has extremely low VOC, excellent physical and mechanical properties and fabulous antiseptic property, is suitable as anticorrosive metal paint.
Description
Technical field
The invention belongs to chemical material technical field, be specifically related to a kind of water corrosion-resistant epoxy paint and preparation method thereof.
Background technology
Containing a large amount of phenyl ring and ehter bond in epoxy molecule structure, system intensity is large, and molecular structure is fine and close, and internal cohesive energy is large, therefore the coating adopting epoxy resin to prepare has with base material strong adhesion, resistant to chemical media and antiseptic property excellent, is widely used in heavy antisepsis field.
Protective system major part is solvent based coating in the market, especially in heavy antisepsis field.Due to containing some hydrophilic compositions in water-borne coatings, antiseptic property is caused to decline.But along with more and more stricter to the requirement of environmental protection, the demand of water-based anticorrosive paint is more and more urgent, and therefore the water-borne coatings of antiseptic property excellence comes into one's own.Aqueous epoxy coating still has the various features of epoxy resin, and the coating adopting aqueous epoxy resins to prepare can reach good effect equally, but most of aqueous epoxy coating is compared with solvent epoxy coatings, and still there is a big difference for antiseptic property.
Invention about aqueous epoxy coating and modified waterborne epoxy coating thereof has many examples.CN102746766A adopts aqueous epoxy emulsion and silicon sol jointly as filmogen, though have good antiseptic property, because silicon sol easily causes its coating stability in storage to decline.CN100503754 describes a kind of aqueous epoxy nano composite coating and preparation method thereof, wherein aqueous epoxy nano composite curing agent complicated process of preparation, and this dispersing method nano-powder also can not get effective stable dispersion in solidifying agent.
Nano silicon is a kind of common nano-powder, the more general nano-powder of price is cheap, and surface is containing a large amount of activated silica hydroxyl, aminosilane is adopted to carry out surface modification, the dispersiveness of nanoparticle can not only be improved, react with epoxide group in epoxy coating solidification process simultaneously, improve the compactness of paint film and every mechanical property, meet the requirement of heavy antisepsis.Therefore, water corrosion-resistant epoxy paint prepared by the present invention is using the main film forming substance of aqueous epoxy resins as water-based anticorrosive paint, containing amino silane modified nano silicon and aqueous epoxy curing agent jointly as the solidifying agent of epoxy coating, prepare and there is excellent mechanical property and the aqueous epoxy coating of antiseptic property.
Summary of the invention
The object of the present invention is to provide and a kind of there is water corrosion-resistant epoxy paint of excellent mechanical property and antiseptic property and preparation method thereof.
Water corrosion-resistant epoxy paint provided by the invention, using aqueous epoxy resins as filmogen, and adds appropriate anti-corrosion paint, filler and auxiliary agent and prepares; Adopt amino silane modified nano silicon and aqueous epoxy curing agent mixing as the solidifying agent of corrosion-resistant epoxy paint, its paint film has excellent mechanical property and excellent antiseptic property.This coating is used for metal material surface, meets the antiseptic property of coating.
Water corrosion-resistant epoxy paint provided by the invention, comprises A, B two components, wherein:
Component A, by weight:
9 ~ 14 parts, water;
Aqueous epoxy resin emulsion 30 ~ 40 parts;
Anti-corrosion paint 3 ~ 9 parts;
Filler 20 ~ 25 parts;
Auxiliary agent 1 ~ 6 part, auxiliary agent comprises: dispersion agent, substrate wetting agents, defoamer, anti-sudden strain of a muscle rust agent, pH adjusting agent, thickening material, film coalescence aid etc.;
B component, by weight:
8 ~ 10 parts, water;
Aminosilane 0.2 ~ 0.4 part;
Nano silicon 2 ~ 4 parts;
6 ~ 8 parts, soluble epoxide solidifying agent.
The preparation method of water corrosion-resistant epoxy paint provided by the invention, comprises the preparation of component A and the preparation of B component; Concrete steps are:
The preparation of component A: first by water, part of auxiliary mixing and stirring, progressively add anti-corrosion paint and filler, be dispersed at high speeds and reach regulation fineness; Then reduction of speed, adds aqueous epoxy resin emulsion and another part auxiliary agent, stirs, namely obtain water corrosion-resistant epoxy paint component A;
The preparation of B component: first water, aminosilane and nano silicon are mixed, high speed dispersion; Add aqueous epoxy curing agent again, continue dispersion; Last ball milling, namely obtains water corrosion-resistant epoxy paint B component--the aqueous epoxy curing agent of the nano-silica-containing of stably dispersing.
In the present invention, described aqueous epoxy curing agent, the amino of the selected aminosilane (coupling agent) in amino silane modified nano silicon contains quantity and can be divided into mono amino, two amino, triamino and polyamino silane, comprise γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane, N-β (aminoethyl)-γ-aminopropyltrimethoxysilane, N-β (aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane, N-β (aminoethyl)-γ-aminopropyl triethoxysilane, phenylaminomethyl triethoxyl silane, phenylaminomethyl Trimethoxy silane, aminoethyl aminoethylaminopropyl Trimethoxy silane and polyamino alkyltrialkoxysilaneand.Wherein preferred γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane and N-β (aminoethyl)-γ-aminopropyltrimethoxysilane.
In the present invention, the selected nano silicon in amino silane modified nano silicon can be nano silicon prepared by vapor phase process, the precipitator method and sol-gel method, the nano silicon that preferred vapor phase process legal system is standby.
In the present invention, described aqueous epoxy curing agent can be water-soluble, micella decentralized and emulsion-type solidifying agent, the soluble modified amine of preferably water or polyamide curing agent.
In the present invention, described anti-corrosion paint comprises: aluminium triphosphate, s-generation phosphoric acid salt, calcium ion-exchanged silica gel, red iron oxide, mica powder etc.;
In the present invention, described filler comprises: titanium dioxide, process white, talcum powder etc.
In the present invention, described dispersion agent comprises: BYK191(Bi Ke 191), TEGO745W(enlightening height 745W) etc.Described substrate wetting agents comprises: BYK346(Bi Ke 346), TEGOKL245(enlightening is high by 245).Described defoamer comprises: BYK021(Bi Ke 021), BYK022(Bi Ke 022), Sheng Nuopuke 154,1311(polyethers defoamer) etc.The agent of described anti-sudden strain of a muscle rust comprises: holy Silan 794(organic acid sodium salt), anti-sudden strains of a muscle become rusty agent LF-1207 etc.Described pH adjusting agent comprises: AMP-95(2-amino-2-methyl-1-propyl alcohol), ammoniacal liquor etc.Described thickening material comprises: BYK420(Bi Ke 420), BYK425(Bi Ke 425) etc.Described film coalescence aid comprises: PGDA (PGDA), PMA (1-Methoxy-2-propyl acetate) etc.
Water corrosion-resistant epoxy paint of the present invention has extremely low VOC, excellent physical and mechanical properties and fabulous antiseptic property.This coating is coated with and can be used for the metallic surface such as iron and steel, aluminium, plays good preservative effect after coating film forming.
Embodiment
Below by specific embodiment, further describe the present invention.
Embodiment 1:
。
The preparation method of water corrosion-resistant epoxy paint: component 1 ~ 5 is dropped in a mixing bowl respectively by the weight weighed up, component 6 is added under high-shear, stir, then drop into the powder of component 7 ~ 11 in batches, and carry out high-speed stirring and mill, reach after requirement until fineness, add component 12-16, after stirring, i.e. obtained component A.
Component 17,18 is mixed with 19, high speed dispersion 30 minutes, then add component 20, continue high speed dispersion about ten minutes, then mixed slurry is proceeded to ball mill and carry out ball milling, namely obtained stable dispersion liquid B component.
Coating property test is tested by the testing method of corresponding national Specification, and performance is as follows:
。
Embodiment 2:
。
The preparation method of water corrosion-resistant epoxy paint: component 1 ~ 5 is dropped in a mixing bowl respectively by the weight weighed up, component 6 is added under high-shear, stir, then drop into the powder of component 7 ~ 11 in batches, and carry out high-speed stirring and mill, reach after requirement until fineness, add component 12-17, after stirring, i.e. obtained component A.
Component 17,18 is mixed high speed dispersion 30 minutes with 19, then adds component 20 and continue high speed dispersion about ten minutes, then mixed slurry is proceeded to ball mill and carry out ball milling, namely obtained stable dispersion liquid B component.
Coating property test is tested by the testing method of corresponding national Specification, and performance is as follows:
。
Claims (5)
1. a water corrosion-resistant epoxy paint, comprises A, B two components, it is characterized in that:
Component A, by weight, comprising:
9 ~ 14 parts, water;
Aqueous epoxy resin emulsion 30 ~ 40 parts;
Anti-corrosion paint 3 ~ 9 parts;
Filler 20 ~ 25 parts;
Auxiliary agent 1 ~ 6 part, auxiliary agent comprises: dispersion agent, substrate wetting agents, defoamer, the agent of anti-sudden strain of a muscle rust, pH adjusting agent, thickening material, film coalescence aid;
B component, by weight, comprising:
8 ~ 10 parts, water;
Aminosilane 0.2 ~ 0.4 part;
Nano silicon 2 ~ 4 parts;
Aqueous epoxy curing agent 6 ~ 8 parts.
2. water corrosion-resistant epoxy paint according to claim 1, it is characterized in that the amino of described aminosilane contains quantity and is divided into mono amino and polyamino silane, comprise γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane, N-β (aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane, aminopropyltriethoxysilane triethoxyl silane, aminopropyltriethoxysilane Trimethoxy silane and polyamino alkyltrialkoxysilaneand.
3. prepare a method for the water corrosion-resistant epoxy paint described in claim 1 or 2, comprise the preparation of component A and the preparation of B component; It is characterized in that concrete steps are:
The preparation of component A: first by water, part of auxiliary mixing and stirring, progressively add anti-corrosion paint and filler, be dispersed at high speeds and reach regulation fineness; Then reduction of speed, adds aqueous epoxy resin emulsion and another part auxiliary agent, stirs, namely obtain water corrosion-resistant epoxy paint component A;
The preparation of B component: first water, aminosilane and nano silicon are mixed, high speed dispersion; Add aqueous epoxy curing agent again, continue dispersion; Last ball milling, namely obtains water corrosion-resistant epoxy paint B component--the aqueous epoxy curing agent of the nano-silica-containing of stably dispersing.
4. the preparation method of water corrosion-resistant epoxy paint according to claim 3, is characterized in that nano silicon used is the nano silicon prepared by vapor phase process, the precipitator method or sol-gel method.
5. the preparation method of water corrosion-resistant epoxy paint according to claim 3, is characterized in that aqueous epoxy curing agent is water-soluble, micella decentralized or emulsion-type solidifying agent.
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| CN201410555656.XA CN104231866B (en) | 2014-10-20 | 2014-10-20 | A kind of water corrosion-resistant epoxy paint and preparation method thereof |
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| CN106609056A (en) * | 2015-10-26 | 2017-05-03 | 天津市新丽华色材有限责任公司 | Waterborne epoxy anticorrosion paint |
| CN106634442A (en) * | 2016-12-28 | 2017-05-10 | 国网山东省电力公司临沂供电公司 | Electric net hardware fitting coated with dual-ingredient waterborne epoxy anticorrosive paint and preparation method of anticorrosive paint |
| CN107502132B (en) * | 2017-07-11 | 2020-07-24 | 长木（宁波）新材料科技有限公司 | Two-component water-based epoxy anticorrosive paint |
| CN107936758A (en) * | 2017-10-30 | 2018-04-20 | 合肥林邦门业有限公司 | A kind of bi-component waterproof aqueous, environmental protective epoxy coating |
| CN108359349A (en) * | 2018-02-05 | 2018-08-03 | 罗宇强 | A kind of water-based anticorrosive paint and preparation method thereof |
| CN108441085B (en) * | 2018-05-02 | 2021-03-02 | 中国科学院兰州化学物理研究所 | Water-based super-amphiphobic long-acting anticorrosive coating and preparation method thereof |
| CN110484142A (en) * | 2018-05-14 | 2019-11-22 | 广东天丛新材料有限公司 | It is a kind of to apply in the anticorrosive paint of metal surface and its using technique |
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| CN110746801A (en) * | 2019-05-29 | 2020-02-04 | 丹阳市现代实业有限公司 | Green and environment-friendly water-based paint and preparation method thereof |
| CN110484090A (en) * | 2019-07-23 | 2019-11-22 | 广州化工研究设计院 | A kind of water corrosion-resistant epoxy paint and preparation method thereof |
| CN110669408B (en) * | 2019-10-09 | 2021-05-28 | 无锡新而奇化工科技有限公司 | Nano modified epoxy resin anticorrosive paint and preparation method thereof |
| CN112778869A (en) * | 2019-11-05 | 2021-05-11 | 宜兴汉光高新石化有限公司 | Water-based two-component epoxy anticorrosive paint for storage tank weld joint and preparation method thereof |
| CN112266690A (en) * | 2020-11-04 | 2021-01-26 | 芜湖天航重工股份有限公司 | Wear-resistant anticorrosive paint for surface layer of wind power tower and preparation method thereof |
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| WO2023099435A1 (en) | 2021-11-30 | 2023-06-08 | Momentive Performance Materials Gmbh | Curing compositions for epoxy resin compositions |
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| CN114058246A (en) * | 2021-12-31 | 2022-02-18 | 常州市华菱新材料有限公司 | High-strength corrosion-resistant water-based epoxy coating and preparation method thereof |
| CN115181445A (en) * | 2022-06-09 | 2022-10-14 | 中建材苏州防水研究院有限公司 | Modified zinc powder suitable for two-component water-based epoxy zinc-rich coating and preparation method and application thereof |
| CN116285563A (en) * | 2022-12-27 | 2023-06-23 | 山东华诚高科胶粘剂有限公司 | Silica sol modified waterborne epoxy anticorrosive paint and preparation method thereof |
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| CN100463947C (en) * | 2005-09-22 | 2009-02-25 | 长江水利委员会长江科学院 | Nano composite aqueous epoxide resin coating material and preparation method |
| CN101392142B (en) * | 2008-11-06 | 2011-11-16 | 同济大学 | Method for preparing environment-friendly type anti-corrosive and anti-fingerprint metal surface coating |
| CN101864239B (en) * | 2010-06-04 | 2012-07-04 | 北京化工大学 | Hyperbranched epoxy resin/polypyrrole composite anticorrosive paint and preparation method thereof |
| CN102108245B (en) * | 2010-12-20 | 2013-02-06 | 深圳市中科立涛科技有限公司 | Waterborne polyester modified epoxy polyurethane anticorrosive paint and preparation method thereof |
| CN103571302A (en) * | 2013-09-30 | 2014-02-12 | 浙江工业大学 | Water-based fluorine-containing epoxy paint |
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Inventor after: Xu Jie Inventor after: Gu Guangxin Inventor after: Xu Feng Inventor after: Liu Jian Inventor after: Jiu Ce Inventor after: Sun Shuyuan Inventor after: Li Jinyang Inventor before: Xu Jie Inventor before: Gu Guangxin Inventor before: Xu Feng |
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