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Water-based heavy-duty anticorrosive epoxy resin emulsion and preparation method thereof

An epoxy resin emulsion, epoxy resin technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of low solid content, low curing efficiency, flash rust and foaming, etc., to improve the concept field , not easy to migrate, good hardness effect

Inactive Publication Date: 2020-04-24
佛山市顺德区巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most epoxy emulsions on the market have low solid content and low curing efficiency in high-humidity environments, resulting in foaming when water resistance does not exceed 10 days, flash rust and foaming when salt spray resistance does not exceed 500 hours, and even peeling off

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0036] In addition, the present invention also provides a preparation method of the water-based heavy-duty epoxy resin emulsion, comprising the following steps:

[0037] 1) Preparation of emulsifier: under the protection of dry nitrogen, add the formula amount of polyethylene glycol, polypropylene glycol, polyetheramine and epoxy resin to a four-necked flask with a reflux condenser, stir and dissolve at 50-120 °C , after being completely dissolved, the temperature is raised to 140-160 ° C, the catalyst is slowly added, the temperature is kept for 3-8 h, and the temperature is lowered to obtain an emulsifier;

[0038] 2) Modification of epoxy resin: add epoxy resin, epoxy diluent, epoxy silane coupling agent and co-solvent in formula amount at the bottom of the reaction kettle, heat up to 75-85°C, stir and dissolve for 20- 40 minutes, cool down to 50-60 ℃, add the formula amount of catalyst, keep at 50-60 ℃ for 1-2 hours;

[0039] 3) Emulsification of modified epoxy resin: the...

Embodiment 1

[0044] A water-based heavy-duty anti-corrosion epoxy resin emulsion, in parts by mass, the epoxy resin emulsion is 210 parts water, 12 parts emulsifier, 280 parts epoxy resin E-51, and epoxy diluent ethylene glycol diglycidyl ether 10 parts, 2 parts of epoxy-terminated phenyl trisiloxane, 15 parts of cosolvent propylene glycol methyl ether, 0.5 part of catalyst benzyl amine;

[0045] Wherein, the emulsifier is composed of polyethylene glycol PEG-2000, polypropylene glycol PPG-600, polyetheramine L-100, epoxy resin E-44, and catalyst triphenylphosphine according to 6:5:2:100:0.5 production;

[0046] The preparation method of the water-based heavy-duty epoxy resin emulsion specifically includes the following steps:

[0047] 1) Preparation of emulsifier: under the protection of dry nitrogen, add polyethylene glycol PEG-2000, polypropylene glycol PPG-600, polyetheramine L-100 and cyclic Oxygen resin E-44, stirred and dissolved at 80°C, heated to 145°C after complete dissolution,...

Embodiment 2

[0052] A water-based heavy-duty anti-corrosion epoxy resin emulsion, in parts by mass, the epoxy resin emulsion comprises 200 parts of water, 12 parts of an emulsifier, 280 parts of epoxy resin E-20, and epoxy diluent neopentyl glycol dicondensate 10 parts of glycerol ether, 2 parts of 3-glycidyl propyl trimethoxysilane, 15 parts of cosolvent propylene glycol methyl ether, 1 part of catalyst benzyl amine;

[0053] Wherein, the emulsifier is composed of polyethylene glycol PEG-4000, polypropylene glycol PPG-1000, polyetheramine L-200, epoxy resin E-51, and catalyst triphenylphosphine according to 3:8:3:100:1 production.

[0054] The preparation method of the water-based heavy-duty epoxy resin emulsion specifically includes the following steps:

[0055] 1) Preparation of emulsifier: under the protection of dry nitrogen, add the formula amount of polyethylene glycol PEG-4000, polypropylene glycol PPG-1000, polyetheramine L-200 and cyclic Oxygen resin E-51, stirred and dissolved...

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PUM

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Abstract

The invention discloses a water-based heavy-duty anticorrosive epoxy resin emulsion. The epoxy resin emulsion comprises, by mass, 150-300 parts of water, 10-30 parts of an emulsifier, 280-320 parts ofepoxy resin, 10-30 parts of an epoxy diluent, 1-5 parts of an epoxy silane coupling agent, 15-30 parts of a cosolvent and 0.5-1 part of a catalyst, wherein the emulsifier is prepared from polyethylene glycol, polypropylene glycol, polyether amine, epoxy resin and a catalyst according to the ratio of (5-20):(1-10):(1-20):(80-120):(0.5-2). The water-based heavy-duty anticorrosive epoxy resin emulsion is good in dilution stability, mechanical stability, room-temperature storage stability, heat storage stability and freeze-thaw stability, has good hardness, adhesion, water resistance and acid andalkali resistance, and also has excellent salt water resistance and salt spray resistance.

Description

technical field [0001] The invention relates to an aqueous heavy-duty anti-corrosion epoxy resin emulsion and a preparation method thereof, belonging to the field of heavy-duty anti-corrosion of water-based coatings. Background technique [0002] As an important part of the coating industry, industrial anti-corrosion coatings, environmental protection water-based is an inevitable trend of its development. Nowadays, water-based epoxy resins not only have comprehensive properties that can reach the level of solvent-based epoxy resins, but some even surpass traditional solvent-based epoxy resins. The research and promotion of resin water-based system is of great significance. [0003] At present, the common water-based anti-corrosion coatings are mostly water-based epoxy resin emulsions, which have the advantages of fast curing rate, high hardness, and good water resistance. In the past ten years, the application of water-based epoxy resins has also replaced solvents in many f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C08J3/03C08G59/14
CPCC08G59/145C08J3/03C08J2363/00C08K2003/328C08L2205/025C09D5/084C09D163/00C08L63/00C08K3/32
Inventor 陈小龙单宝苇李嘉浩
Owner 佛山市顺德区巴德富实业有限公司
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