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Water-based epoxy emulsion capable of dissolving and reacting with oil-based curing agent and preparation method thereof

A water-based epoxy emulsion and curing agent technology, applied in the field of epoxy emulsion preparation, can solve problems such as poor performance, poor compatibility, incomplete reaction, etc., and achieve good compatibility, high catalytic activity, and good stability. Effect

Inactive Publication Date: 2019-02-22
苏州宇江新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the existing water-based epoxy resins on the market are simply phase-inversion emulsification of oil-based epoxy resins, which can only be used in conjunction with water-based curing agents, but have poor compatibility with oil-based curing agents, and the reaction is not comprehensive. poor performance

Method used

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  • Water-based epoxy emulsion capable of dissolving and reacting with oil-based curing agent and preparation method thereof
  • Water-based epoxy emulsion capable of dissolving and reacting with oil-based curing agent and preparation method thereof
  • Water-based epoxy emulsion capable of dissolving and reacting with oil-based curing agent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] A kind of water-based epoxy emulsion capable of miscible reaction with oil curing agent, in parts by weight, comprises the following components:

[0033]

[0034] The emulsifier is a mixture of reactive emulsifiers and other types of emulsifiers, the mass ratio of the two is 3:1.5; the reactive emulsifier is a modified fatty alcohol polyoxyethylene emulsifier;

[0035] The preparation method of this aqueous epoxy emulsion comprises the following steps:

[0036] (1) Mix hydroxyapatite and cyclohexane, then add stearyloxyisopropyl aluminate, add triethylamine dropwise, slowly heat up to 100°C, and reflux for 1 hour; after the reaction is completed, cool to room temperature, Then add ethyl orthosilicate dropwise to the reaction system, raise the temperature to 130°C, continue to reflux for 5 hours, cool to room temperature after the reaction, filter, wash the precipitate with deionized water and absolute ethanol in turn, and dry to obtain the modified Nano silicon oxid...

Embodiment 2

[0041] A kind of water-based epoxy emulsion capable of miscible reaction with oil curing agent, in parts by weight, comprises the following components:

[0042]

[0043] The emulsifier is a mixture of reactive emulsifiers and other types of emulsifiers, the mass ratio of the two is 4.5:2; the reactive emulsifier is a modified fatty alcohol polyoxyethylene emulsifier;

[0044] The preparation method of this aqueous epoxy emulsion comprises the following steps:

[0045] (1) Mix hydroxyapatite and cyclohexane, then add stearyloxyisopropyl aluminate, add triethylamine dropwise, slowly heat up to 120°C, and reflux for 5 hours; after the reaction is completed, cool to room temperature, Then add ethyl orthosilicate dropwise to the reaction system, raise the temperature to 150°C, continue to reflux for 10 hours, cool to room temperature after the reaction, filter, wash the precipitate with deionized water and absolute ethanol in turn, and dry to obtain the modified Nano silicon ox...

Embodiment 3

[0050] A kind of water-based epoxy emulsion capable of miscible reaction with oil curing agent, in parts by weight, comprises the following components:

[0051]

[0052] The emulsifier is a mixture of reactive emulsifiers and other types of emulsifiers, the mass ratio of the two is 3:1.5; the reactive emulsifier is a modified fatty alcohol polyoxyethylene emulsifier;

[0053] The preparation method of this aqueous epoxy emulsion comprises the following steps:

[0054] (1) Mix hydroxyapatite and cyclohexane, then add stearyloxyisopropyl aluminate, add triethylamine dropwise, slowly heat up to 105°C, and reflux for 2 hours; after the reaction, cool to room temperature, Then add ethyl orthosilicate dropwise to the reaction system, raise the temperature to 135°C, continue to reflux for 6 hours, cool to room temperature after the reaction, filter, wash the precipitate with deionized water and absolute ethanol in turn, and dry to obtain the modified Nano silicon oxide / hydroxyapa...

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Abstract

The invention discloses a water-based epoxy emulsion capable of dissolving and reacting with an oily curing agent. The emulsion is prepared from the following components in parts by weight: 50-70 parts of epoxy resin E51-128, 4-8 parts of emulsifier, 1-3 parts of thickening agent, 0.1-0.5 part of a defoaming agent and 30-50 parts of deionized water, wherein the emulsifier is prepared by mixing a reactive emulsifier and other types of emulsifiers in a mass ratio of (3-5): (1-3); and the reactive emulsifier is modified fatty alcohol polyoxyethylene emulsifier. The invention further discloses a method for preparing the water-based epoxy resin emulsion. The method is simple in operation and low in preparation cost; the emulsion has good stability, is compatible with water-based / oil-based curing agents, can comprehensively react with the oil-based curing agent, and has complete curing and good performance after curing.

Description

Technical field: [0001] The invention relates to the field of preparation of epoxy emulsions, in particular to a water-based epoxy emulsion capable of compatible reaction with an oily curing agent and a preparation method thereof. Background technique: [0002] Epoxy resin has excellent adhesion, thermal stability, chemical resistance, insulation and mechanical strength, etc., and is widely used in coatings, adhesives and composite materials. However, commonly used epoxy resins are non-water-soluble, and are only soluble in organic solvents such as aromatic hydrocarbons, alcohols and ketones, which will cause pollution to the environment. With the increasing awareness of global environmental protection, governments of various countries pay more and more attention to the pollution of volatile organic compounds to the environment. Our country also implemented the coating environmental protection standard on July 1, 2004. Therefore, the water-based epoxy resin has become a ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08J3/03
CPCC08J3/03C08J2363/00
Inventor 谢世峰
Owner 苏州宇江新材料有限公司
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