WO2021237404A1 - Revêtement anticorrosion époxy aqueux et procédé de préparation associé - Google Patents

Revêtement anticorrosion époxy aqueux et procédé de préparation associé Download PDF

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Publication number
WO2021237404A1
WO2021237404A1 PCT/CN2020/092083 CN2020092083W WO2021237404A1 WO 2021237404 A1 WO2021237404 A1 WO 2021237404A1 CN 2020092083 W CN2020092083 W CN 2020092083W WO 2021237404 A1 WO2021237404 A1 WO 2021237404A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
epoxy resin
anticorrosive coating
component
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/092083
Other languages
English (en)
Chinese (zh)
Inventor
王胜龙
温正明
杨名亮
吴培发
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XIAMEN SUNRUI SHIP COATING CO Ltd
Original Assignee
XIAMEN SUNRUI SHIP COATING CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by XIAMEN SUNRUI SHIP COATING CO Ltd filed Critical XIAMEN SUNRUI SHIP COATING CO Ltd
Priority to PCT/CN2020/092083 priority Critical patent/WO2021237404A1/fr
Priority to CN202080005871.6A priority patent/CN113015771A/zh
Publication of WO2021237404A1 publication Critical patent/WO2021237404A1/fr
Priority to ZA2022/09631A priority patent/ZA202209631B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

Definitions

  • the invention relates to the technical field of chemical materials, in particular to a waterborne epoxy anticorrosive paint and a preparation method thereof.
  • Water-based anticorrosive coatings with water as dispersion and resin as film-forming base material have the advantages of low VOC emissions, performance equivalent to solvent-based anticorrosive coatings, and low cost. It has become one of the development trends of environmentally friendly coatings in the future.
  • the preparation process is generally: pre-grind the pigment and filler solution, and then disperse and mix with the emulsion at high speed; at the same time, the emulsion type waterborne epoxy also needs to add the film-forming auxiliary, which has a high boiling point. Solvent, assist the resin to cure into a film.
  • the A component includes the following mass percentages Component: 22%-25% bisphenol A type epoxy resin water-based dispersion, 8%-10% o-cresol novolac epoxy resin water-based dispersion, 0.8%-1% solvent, 1.5%-1.8% Dispersant, 0.1%-0.2% anti-settling agent, 0.8%-1% wetting and leveling agent, 0.4%-0.6% thickener, 0.6%-0.7% defoamer, 2%-20 % Titanium dioxide, 20%-40% filler and the balance of deionized water, which contains 0.8%-1% volatile solvent, the pigment in this scheme needs to be pre-grinded with a fineness of less than 20 ⁇ m.
  • Water-based epoxy resin A water-based epoxy resin B, dispersant, defoamer, wetting agent, thixotropic agent, anti-flash agent, pigment, filler, deionized water;
  • the water-based epoxy resin A is a self-emulsifying water-based epoxy resin
  • the water-based epoxy resin B is a glycidyl ester epoxy resin
  • the second component includes: curing agent and deionized water
  • the curing agent is an amine curing agent.
  • the mass parts of each raw material in the first component are:
  • the mass parts of the raw materials in the second component are: 60 parts of curing agent and 40 parts of deionized water.
  • the solid content of the water-based epoxy resin A is 100%, which is selected from Foshan Tongde Chemical 3EE107B self-emulsifying water-based epoxy resin.
  • the solid content of the water-based epoxy resin B is 100%, and is selected from the group consisting of diglycidyl hexahydrophthalate, diglycidyl isophthalate, and diglycidyl adipic acid.
  • diglycidyl hexahydrophthalate diglycidyl isophthalate
  • diglycidyl adipic acid diglycidyl adipic acid.
  • diglycidyl esters One or two or more of glycidyl esters.
  • the thixotropic agent is at least one of water-based bentonite, water-based silicate, and organically modified hectorite clay.
  • the pigments and fillers are at least one of mica dust, composite iron titanium powder, mica powder, iron oxide red, talc powder, zinc phosphate, aluminum tripolyphosphate, feldspar powder, and titanium dioxide Three combinations.
  • the defoaming agent is selected from at least one of 180W, 182W, 280W, 282W, 285W, 290W, and 291W.
  • the dispersant is at least one of modified polyurethane, high molecular polymer, unsaturated carboxylic acid, and high molecular block polymer.
  • the dispersant is selected from at least one of Eucalyptus 520S, 560S, 650U, 685U, 690W, and 765S.
  • the wetting agent is at least one of organically modified polysiloxane, fluorocarbon modified silicone, functional acrylate, and fluorocarbon polymer.
  • the wetting agent is selected from at least one of Eucalyptus 430S, 470U, 375S, 360S, 361S, and 385S.
  • the present invention also provides a preparation method according to any of the above-mentioned water-based epoxy anticorrosive coatings, including:
  • the water-based epoxy resin A has a hydrophilic group in the resin molecular chain, which can self-emulsify in contact with water
  • the water-based epoxy resin B has one end hydrophilic and one end containing a highly active epoxy It has good compatibility with resin A and has self-emulsification function. Its viscosity is low, and its activity is high. It is easy to react with the curing agent; and after the water-based epoxy resin A and the water-based epoxy resin B are mixed, the water-based epoxy resin B ring
  • the oxygen group preferentially reacts with the curing agent amine group. The progress of this reaction can promote the reaction between the curing agent and A resin, and the final system will form a film on its own without the application of cosolvents, which greatly reduces the VOC emission.
  • the principle of the existing cosolvent in the emulsion system is that in the process of water volatilization, the concentration of the solvent inside and outside the emulsion particles changes, and more solvent enters the emulsion particles to have a swelling effect.
  • the resin contacts the curing agent and solidifies to form a film.
  • the cosolvent Slowly volatilize into the environment.
  • the present invention utilizes single-end hydrophilic low-viscosity and high-activity water-based epoxy resin B, which is easy to contact and react with the curing agent.
  • the molecular weight of the reaction resin increases, and the self-emulsified emulsion particles swell, which drives the contact between the water-based epoxy resin A and the curing agent.
  • the final film is formed and cured without any solvent volatilization.
  • Self-emulsifying resins have the advantage of high-speed dispersion or grinding with pigments and fillers.
  • Emulsion resins are oil-in-water. If they are ground or high-speed dispersion with pigments and fillers for a long time, they will easily break the emulsion, and the coating system will lose its application value. Or, if the high-speed dispersion time is short, the fineness of the pigments and fillers will not meet the requirements, and the performance of the coating will decrease and the application value will be lost.
  • the self-emulsifying resin has a hydrophilic group in the molecular chain, which is a chemical bonding method, so it will not affect its structure if it is ground with pigments and fillers and high-speed dispersion.
  • the water-based epoxy resin B is also an epoxy resin.
  • the water-based epoxy resin A has good compatibility and hydrophilic groups, which is more conducive to improving the dispersion effect of the water-based epoxy resin A and pigments and fillers. It solves the process of separate pre-high-speed dispersion or grinding of pigments and fillers, saving production costs.
  • the water-based epoxy anticorrosive coating provided by the present invention does not require additional pre-grinding of pigments and fillers to prepare the slurry process.
  • the water-based epoxy resin A and the water-based epoxy resin B are combined without adding additional film-forming additives.
  • the VOC content is low; it has the characteristics of high storage stability, strong adhesion, high mechanical strength, excellent anti-corrosion performance, good construction process performance, energy saving, environmental protection, and low cost.
  • the present invention provides the following examples (parts per unit mass):
  • Waterborne epoxy resin B uses diglycidyl isophthalate
  • the dispersing agent is 650U; the defoaming agent is 285W; the wetting agent is 470U; the thixotropic agent is water-based bentonite and the anti-flash agent is general F5100;
  • the water-based curing agent adopts modified polyamide
  • Waterborne epoxy resin B uses diglycidyl hexahydrophthalate
  • the dispersant adopts 690W defoamer, 280W wetting agent, 360S thixotropic agent, and water-based silicate;
  • the anti-flash agent adopts general F5100
  • the water-based curing agent adopts modified alicyclic amine
  • Waterborne epoxy resin B uses diglycidyl adipate
  • the dispersant adopts 520S
  • the thixotropic agent adopts organically modified hectorite clay
  • the anti-flash agent is generally F5100;
  • the water-based curing agent adopts modified polyamidoamine
  • Comparative Example 1 and Comparative Example 2 except for the water-based epoxy resins A and B, the other specific raw materials and ratios used are the same as those in Example 3.
  • Example 1 component A and component B were used according to 6.5:1, 7:1 and 7.3:1, and tested according to the indicators shown in the following table:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne un revêtement anticorrosion époxy aqueux, comprenant : un constituant A et un constituant B. Le constituant A comprend une résine époxy aqueuse A, une résine époxy aqueuse B, un dispersant, un agent antimousse, un agent mouillant, un agent thixotrope, un agent antidéflagration, un pigment, une charge et de l'eau désionisée, la résine époxy aqueuse A étant une résine époxy aqueuse auto-émulsifiante et la résine époxy aqueuse B étant une résine époxy d'ester glycidylique. Le constituant B comprend un agent de durcissement et de l'eau désionisée, l'agent de durcissement étant un agent de durcissement amine. L'invention concerne en outre un procédé de préparation du revêtement anticorrosion époxy aqueux, le procédé comprenant un ordre de mélange spécifique et des paramètres de processus spécifiques.
PCT/CN2020/092083 2020-05-25 2020-05-25 Revêtement anticorrosion époxy aqueux et procédé de préparation associé Ceased WO2021237404A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2020/092083 WO2021237404A1 (fr) 2020-05-25 2020-05-25 Revêtement anticorrosion époxy aqueux et procédé de préparation associé
CN202080005871.6A CN113015771A (zh) 2020-05-25 2020-05-25 一种水性环氧防腐涂料及其制备方法
ZA2022/09631A ZA202209631B (en) 2020-05-25 2022-08-29 Water-based epoxy anti-corrosion coating and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/092083 WO2021237404A1 (fr) 2020-05-25 2020-05-25 Revêtement anticorrosion époxy aqueux et procédé de préparation associé

Publications (1)

Publication Number Publication Date
WO2021237404A1 true WO2021237404A1 (fr) 2021-12-02

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PCT/CN2020/092083 Ceased WO2021237404A1 (fr) 2020-05-25 2020-05-25 Revêtement anticorrosion époxy aqueux et procédé de préparation associé

Country Status (3)

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CN (1) CN113015771A (fr)
WO (1) WO2021237404A1 (fr)
ZA (1) ZA202209631B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
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CN114672234A (zh) * 2022-03-15 2022-06-28 扬州工业职业技术学院 一种纳米环氧聚氨酯水性涂料及其制备方法
CN114988760A (zh) * 2022-04-02 2022-09-02 湖北工业大学 一种钛矿渣聚合物防腐涂料及其制备方法
CN115466556A (zh) * 2022-09-29 2022-12-13 洛阳双瑞防腐工程技术有限公司 一种石油储罐用水性环氧重防腐涂料及其制备方法
CN116478594A (zh) * 2023-04-04 2023-07-25 雅图高新材料股份有限公司 一种高性能水性环氧车架厚浆漆及其制备方法和应用
CN119286355A (zh) * 2024-12-05 2025-01-10 浩力森涂料（上海）有限公司 一种用于发动机表面的环氧底面合一涂料及其制备方法
CN119684868A (zh) * 2024-12-17 2025-03-25 优美特（北京）环境材料科技股份公司 一种高铁外壳用环氧底漆及其制备方法
CN121160186A (zh) * 2025-08-05 2025-12-19 威海佳美化工有限公司 一种高盐高湿环境适用的重防腐型水性环氧底漆生产制备工艺

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CN114773947A (zh) * 2022-03-03 2022-07-22 广东坚派新材料有限公司 一种耐冲击、耐延伸的风电叶片用水性底漆及其制备方法、使用方法
CN116285584B (zh) * 2023-03-29 2024-05-17 江门市新会区新日旭电子材料有限公司 一种水性环氧树脂绝缘涂料及其制备方法
CN116535931A (zh) * 2023-05-08 2023-08-04 广州特种承压设备检测研究院 水性环氧树脂防腐涂料及其制备方法和应用
CN117343606A (zh) * 2023-09-21 2024-01-05 中远关西涂料（上海）有限公司 一种集装箱用耐酸耐碱耐磨特种水性环氧涂料的制备方法

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CN101802048A (zh) * 2007-09-21 2010-08-11 汉高两合股份公司 用于粘合剂结合系统和涂层的底漆组合物
CN107523179A (zh) * 2017-07-21 2017-12-29 华南理工大学 一种水性环氧绝缘漆及其制备方法与应用
CN111117426A (zh) * 2018-12-31 2020-05-08 江苏足迹涂料有限公司 高耐腐蚀防闪锈水性环氧底漆及其制备方法
CN109880484A (zh) * 2019-02-20 2019-06-14 上海振华重工（集团）常州油漆有限公司 一种水性环氧厚浆防腐漆及其制备方法和应用
CN110982380A (zh) * 2019-12-11 2020-04-10 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) 一种水性环氧树脂机舱涂料及其制备方法

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114672234A (zh) * 2022-03-15 2022-06-28 扬州工业职业技术学院 一种纳米环氧聚氨酯水性涂料及其制备方法
CN114988760A (zh) * 2022-04-02 2022-09-02 湖北工业大学 一种钛矿渣聚合物防腐涂料及其制备方法
CN114988760B (zh) * 2022-04-02 2023-10-10 湖北工业大学 一种钛矿渣聚合物防腐涂料及其制备方法
CN115466556A (zh) * 2022-09-29 2022-12-13 洛阳双瑞防腐工程技术有限公司 一种石油储罐用水性环氧重防腐涂料及其制备方法
CN115466556B (zh) * 2022-09-29 2023-07-28 洛阳双瑞防腐工程技术有限公司 一种石油储罐用水性环氧重防腐涂料及其制备方法
CN116478594A (zh) * 2023-04-04 2023-07-25 雅图高新材料股份有限公司 一种高性能水性环氧车架厚浆漆及其制备方法和应用
CN116478594B (zh) * 2023-04-04 2023-11-28 雅图高新材料股份有限公司 一种高性能水性环氧车架厚浆漆及其制备方法和应用
CN119286355A (zh) * 2024-12-05 2025-01-10 浩力森涂料（上海）有限公司 一种用于发动机表面的环氧底面合一涂料及其制备方法
CN119684868A (zh) * 2024-12-17 2025-03-25 优美特（北京）环境材料科技股份公司 一种高铁外壳用环氧底漆及其制备方法
CN121160186A (zh) * 2025-08-05 2025-12-19 威海佳美化工有限公司 一种高盐高湿环境适用的重防腐型水性环氧底漆生产制备工艺

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CN113015771A (zh) 2021-06-22

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