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High-performance silicone-acrylate-modified water-based epoxy emulsion and production method thereof

A technology of water-based epoxy emulsion and production method, which is applied in the direction of coating, anti-corrosion coating, filling slurry, etc., can solve the problems of unsatisfactory comprehensive mechanical properties, failure to meet market demand, unstable rheology, etc., and achieve excellent sealing and shielding Good performance, stable product quality, and simple production process

Inactive Publication Date: 2012-02-01
IANGSU JINLING SPECIAL PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, anti-corrosion coatings are mainly solvents, and solvent-based products contain a large amount of toxic volatile organic compound solvents, which directly volatilize during production and construction to pollute the environment and endanger human health
The development of water-based epoxy resin has gone through three stages. It is called type 1 water-based epoxy system, which basically does not contain organic solvents, but the coating has poor drying property, short pot life and unstable rheology; the second generation is type II water-based epoxy resin. The epoxy system contains some organic solvents as film-forming aids, which are harmful to the environment; the third-generation products are not yet the most mature, that is, vinyl hydrophilic groups are introduced into the epoxy resin to achieve epoxy self-emulsification effect, but the film-forming property is poor, and the comprehensive mechanical properties are not ideal enough to meet the market demand

Method used

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  • High-performance silicone-acrylate-modified water-based epoxy emulsion and production method thereof
  • High-performance silicone-acrylate-modified water-based epoxy emulsion and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The first step is to prepare high-performance silicone-acrylate modified waterborne epoxy emulsion (code H500)

[0018] Weigh 286.10 kg of deionized water, 15 kg of polyether sulfate containing double bonds, 20 kg of methacrylamide isopropyl sulfonate, 16 kg of sodium 1-propenoxy 2-hydroxypropane sulfonate, and polyether containing double bonds. 8kg, sodium bicarbonate 0.5kg, ammonium persulfate 0.5kg, 618 epoxy resin 460kg, isooctyl glycidyl ether 40kg, added into the reactor, heated to 80-90℃ under stirring conditions. Start dropping the mixture of silicone and acrylate: β-(3.4 epoxycyclohexyl) ethyl trimethylsilane 10kg, methacrylic acid 0.5kg, styrene 5kg, 2-ethylhexyl acrylate 5kg, methacrylic acid Glycidyl ester 0.3kg, drip in 30min, keep the reaction temperature (85~90℃) for 2 hours. Then start to add the pre-emulsion mixture dropwise: 43kg of deionized water, 1.5kg of polyether sulfate containing double bonds, 1.5kg of methacrylamide isopropyl sulfonate, 1-propeno...

Embodiment 2

[0022] The first step is to prepare high-performance silicon-acrylic modified waterborne epoxy emulsion (code H400)

[0023] Weigh 304.9 kg of deionized water, 13.5 kg of polyether sulfate containing double bonds, 11 kg of methacrylamide isopropyl sulfonate, 11 kg of sodium 1-propenoxy 2-hydroxypropane sulfonate, and polyether sulfate containing double bonds. Ether 4.5kg, sodium bicarbonate 0.5kg, ammonium persulfate 0.8kg, 618 epoxy resin 380kg, ethylene glycol glycidyl ether 20kg, added into the reactor, heated to 80-90°C under stirring conditions. Start dropping the mixture of silicone and acrylate: 6kg of r-glycidoxypropyltrimethoxysilane, 0.5kg of methacrylic acid, 0.3kg of glycidyl methacrylate, 5kg of methyl methacrylate, butyl acrylate 5kg, drip in 30min, keep the reaction temperature (80~90℃) for two hours. Then start to drip the pre-emulsified mixture: 57kg of deionized water, 3kg of polyether sulfate containing double bonds, 2kg of methacrylamide isopropyl sulfonate, ...

Embodiment 3

[0028] The first step is to prepare high-performance silicone-acrylate modified waterborne epoxy emulsion (code H500)

[0029] The water-based epoxy floor coating is based on Example 1 of the present invention, a high-performance silicone-acrylate modified water-based epoxy emulsion (code H500).

[0030] The second step is to prepare water-based epoxy floor coating

[0031] Weigh 104kg of deionized water, 2.5kg of 750W wetting and dispersing agent, 2.5kg of 760 wetting and dispersing agent, 2.5kg of polysiloxane-polyether copolymer, 190kg of titanium dioxide R920, 10kg of superfine mica powder, and superfine sulfur powder 10kg, superfine glass powder 10kg, propylene glycol 10kg, water-based epoxy emulsion H500 650kg, 2-n-octyl-4-isothiazoline-3-ketoimidazole 1kg, polyurethane leveling agent 5kg, dispersed and ground, fineness 30 ~40μm, discharging and filtering, as the A component of the coating, and the B component is the XY593 modified amine compound curing agent of Xinyuan Chemic...

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Abstract

The invention discloses a high-performance silicone-acrylate-modified water-based epoxy emulsion and a production method thereof, relating to the technical field of production of coatings used in the chemical industry field. The emulsion is prepared with a core-shell mechanism process; in a core layer, a grafted polymer consists of low molecular bisphenol A epoxy resin, epoxy group siloxane and acrylic ester; a shell body consists of hydroxyl-containing siloxane and acrylic ester; and the shell body and the core layer are subjected to interpenetration graft polymerization. In the invention, epoxy resin is modified with an organic silicon acrylic acid monomer, so that a dense crosslinked netlike structure with a special interpenetration network and excellent enclosed shielding performance is obtained. Multiple series of anti-corrosive paints can be prepared on the basis of the high-performance silicone-acrylate-modified water-based epoxy emulsion provided by the invention by taking mixed modified amine as a curing agent. The emulsion has the advantages of easy and convenient production process, saving in energy, environmental friendliness, easiness for coating construction, low sensitivity to water vapor and temperature, extremely high substrate adhesion, high corrosion resistance, high chemical stability and wide formula adjusting range.

Description

Technical field [0001] The invention relates to the technical field of paint production in the chemical industry. Background technique [0002] At present, anti-corrosion coatings are mainly solvents. Solvent-based products contain a large amount of toxic volatile organic compound solvents, which directly volatilize during production and construction to pollute the environment and endanger human health. The development of waterborne epoxy resin has gone through three stages. It is called type 1 waterborne epoxy system, which basically does not contain organic solvents, but the coating has poor dryness, short pot life, and unstable rheology; the second generation is type II waterborne Epoxy system contains some organic solvents as film forming aids, which is harmful to the environment; the third-generation products are not yet the most mature, that is, the introduction of vinyl hydrophilic groups in epoxy resins to achieve epoxy self-emulsification The effect is poor, but the ove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F283/00C08F220/14C08F230/08C08F212/08C08F220/18C08F2/24C09D151/00C09D5/08C09D5/34C04B28/00
Inventor 卞直兵戴海雄卞大荣陈安仁
Owner IANGSU JINLING SPECIAL PAINT CO LTD
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