Organic silicon acrylic acid modified waterborne epoxy emulsion and preparation method thereof

A water-based epoxy emulsion, acrylic technology, applied in the direction of coating, can solve the problems of short pot life, unsatisfactory comprehensive mechanical properties, environmental pollution, etc., to improve impact resistance, excellent comprehensive performance, fine and uniform particle size Effect

Active Publication Date: 2013-04-03
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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Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0030] (1) Preparation of nuclear layer emulsion

[0031] 292kg of deionized water, reactive emulsifier (among them: 12kg of allyl polyether sulfate, 12kg of acrylamide isopropyl sodium sulfonate, 8kg of 2-allyl ether 3-hydroxypropane-1-sulfonate ), additives (A E100 allyl polyether) 3.5kg, initiator (sodium persulfate) 1.2kg, epoxy resin E-51 285kg, epoxy silane (3-glycidyl propyl trimethoxy silane) 11.5kg, reactive diluent (butyl glycidyl ether) 15kg, acrylic acid monomer (9.5kg of styrene, 5kg of methyl methacrylate, 14.5kg of butyl acrylate, and 0.75kg of acrylic acid) were added to the reaction under stirring conditions Kettle, heat up to 85-90°C and react for 1.5-2 hours to form a core layer organosilicon acrylic acid modified water-based epoxy emulsion.

[0032] (2) Preparation of core-shell structure organosilicon acrylic acid modified waterborne epoxy emulsion

[0033] Core layer organosilicon acrylic acid modified water-based epoxy emulsion 669.95kg, add 327.55kg s...

experiment example 2

[0035] (1) Preparation of nuclear layer emulsion

[0036] 292kg of deionized water, reactive emulsifier (among them: 12kg of allyl polyether sulfate, 12kg of acrylamide isopropyl sodium sulfonate, 8kg of 2-allyl ether 3-hydroxypropane-1-sulfonate ), additives (allyl polyether) 3.5kg, epoxy resin E-44 270kg, reactive diluent (butyl glycidyl ether) 30kg, epoxy silane (3-glycidyl propyl trimethoxysilane) 11.5kg, initiator (potassium persulfate) 1.2kg, acrylate monomer (9.5kg of styrene, 5kg of methyl methacrylate, 14.5kg of butyl acrylate, and 0.75kg of acrylic acid) were added to the reactor in turn under stirring conditions, Raise the temperature to 85-90°C and react for 1.5-2 hours to form a silicone acrylic modified water-based epoxy emulsion for the core layer.

[0037] (2) Preparation of core-shell structure organosilicon acrylic acid modified waterborne epoxy emulsion

[0038] 669.95 kg of silicone acrylic modified water-based epoxy emulsion for the core layer, 327.55 kg...

experiment example 3

[0040] (1) Preparation of nuclear layer emulsion

[0041] 311.9kg of deionized water, reactive emulsifier (among them: 13kg of allyl polyether sulfate, 13kg of acrylamide isopropyl sodium sulfonate, 9kg of 2-allyl 3-hydroxypropane-1-sulfonate , additive (allyl polyether) 3kg, epoxy silane (3-glycidyl propyltrimethoxysilane) 10kg, initiator (sodium persulfate) 1kg, epoxy resin E-51 392kg, isooctyl 58kg of glycidyl ether, acrylic acid monomer (including 6kg of styrene, 5kg of methyl methacrylate, 10kg of butyl acrylate, and 0.6kg of acrylic acid) were added to the reactor in turn under stirring conditions, and the temperature was raised to 85-90°C for 1.5-2 hours , forming a core layer silicone acrylic modified water-based epoxy emulsion.

[0042] (2) Preparation of core-shell structure organosilicon acrylic acid modified waterborne epoxy emulsion

[0043] Core layer organosilicon acrylic acid modified water-based epoxy emulsion 832.5kg, add shell layer pre-emulsion monomer 16...

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PUM

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Abstract

The invention provides an organic silicon acrylic acid modified waterborne epoxy emulsion and a preparation method thereof. The core layer consists of low-grade bisphenol A epoxy resin, reactive diluent, epoxy silane, a reactive emulsifier, an initiator, an assistant and an acrylic acid monomer; the shell consists of vinyl siliane, an acrylic acid monomer, a reactive emulsifier, an assistant, an initiator and de-ionized water. The obtained organic silicon acrylic acid modified waterborne epoxy emulsion is small and even in particle size and excellent in stability, is excellent in mechanical strength, environment-friendly and energy-saving after being formed to be films. The dry film matched with modified amine curing agent via the modified waterborne epoxy emulsion can reach the level of close to the film property of solvent-type epoxy resin.

Description

technical field [0001] The invention relates to a novel organosilicon acrylic acid modified water-based epoxy emulsion in the field of chemical industry and its preparation method Background technique [0002] At present, anti-corrosion coatings are mainly based on solvents, and solvent-based products contain a large amount of toxic volatile organic compound solvents, which directly volatilize during production and construction, 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 gr...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F230/08C08F2/24C08G59/20C08G59/22C08G59/50C09D151/08
Inventor 卞大荣卞直兵戴海雄陈安仁
Owner IANGSU JINLING SPECIAL PAINT CO LTD
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