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 li

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Experimental example 1:

[0030] (1) Preparation of core emulsion

[0031] 292kg of deionized water, reactive emulsifier (including 12kg of allyl polyether sulfate, 12kg of sodium acrylamidoisopropyl sulfonate, 8kg of sodium 2-allyl ether 3-hydroxypropane-1-sulfonate ), auxiliary (A E100 allyl polyether) 3.5 kg, initiator (sodium persulfate) 1.2 kg, epoxy resin E-51 285 kg, epoxy silane (3-glycidyl propyl trimethoxy silane) 11.5kg, 15kg of reactive diluent (butyl glycidyl ether), acrylic monomer (including 9.5kg of styrene, 5kg of methyl methacrylate, 14.5kg of butyl acrylate, and 0.75kg of acrylic acid). The kettle is heated to 85-90° C. and reacted for 1.5 to 2 hours to form a core layer organosilicon acrylic modified waterborne epoxy emulsion.

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

[0033] Core layer silicone acrylic modified waterborne epoxy emulsion 669.95kg, drop 327.55kg shell layer pre-emulsified monomer u...

Example Embodiment

[0034] Experimental example 2

[0035] (1) Preparation of core emulsion

[0036] 292kg of deionized water, reactive emulsifier (including 12kg of allyl polyether sulfate, 12kg of sodium acrylamidoisopropyl sulfonate, 8kg of sodium 2-allyl ether 3-hydroxypropane-1-sulfonate ), additives (allyl polyether) 3.5 kg, epoxy resin E-44 270 kg, reactive diluent (butyl glycidyl ether) 30 kg, epoxy silane (3-glycidyl propyl trimethoxy silane) 11.5kg, initiator (potassium persulfate) 1.2kg, acrylate monomers (including 9.5kg of styrene, 5kg of methyl methacrylate, 14.5kg of butyl acrylate, and 0.75kg of acrylic acid) are sequentially added to the reactor under stirring conditions. The temperature is raised to 85-90° C. to react for 1.5-2 hours to form a core layer organosilicon acrylic modified waterborne epoxy emulsion.

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

[0038] Core layer silicone acrylic modified waterborne epoxy emulsion 669...

Example Embodiment

[0039] Experimental example 3

[0040] (1) Preparation of core emulsion

[0041] Deionized water 311.9kg, reactive emulsifier (including: allyl polyether sulfate 13kg, acrylamido isopropyl sulfonate 13kg, 2-allyl 3-hydroxypropane-1-sodium sulfonate 9kg , Additives (allyl polyether) 3kg, epoxy silane (3-glycidyl propyl trimethoxysilane) 10kg, initiator (sodium persulfate) 1kg, epoxy resin E-51 392kg, isooctyl 58kg of glycidyl ether, acrylic monomers (including 6kg of styrene, 5kg of methyl methacrylate, 10kg of butyl acrylate, and 0.6kg of acrylic acid) were added to the reactor under stirring conditions, and the temperature was raised to 85-90℃ for 1.5-2 hours , To form a core layer of silicone acrylic modified waterborne epoxy emulsion.

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

[0043] Core layer organic silicon acrylic modified waterborne epoxy emulsion 832.5kg, drop 165kg shell pre-emulsion monomer at 83-85℃ (including: ...

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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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