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High-solid-content anionic self-emulsified water-borne epoxy resin emulsion and preparation method thereof

A water-based epoxy resin, anionic technology, applied in the field of materials, can solve the problems of complex synthesis process, high VOC, low solid content, etc., and achieve the effect of high solid content, good water dispersibility, and increased solid content

Active Publication Date: 2015-06-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of low solid content, high VOC, external emulsifier and complex synthesis process in the preparation of the existing epoxy resin emulsion, and to provide a kind of epoxy resin with small particle size distribution, good stability and high solid content. Anionic self-emulsifying water-based epoxy resin emulsion with high solid content, safety, environmental protection and easy operation and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of component A:

[0019] (1) The initiator BPO is recrystallized, dried and stored at low temperature for later use. The monomer butyl acrylate and styrene were washed with 5% NaOH alkali to remove the polymerization inhibitor, dried and stored at low temperature for future use. Monomer methacrylic acid is distilled under reduced pressure, and ethylene glycol monobutyl ether and n-butanol solvents are distilled and purified for later use.

[0020] (2) Dissolve 35g of bisphenol A type epoxy resin E-20 in 25g of ethylene glycol monobutyl ether and n-butanol co-solvent (2:3), place in 250ml equipped with a condensing device and N 2 In a through-mouth four-necked flask, heat the oil bath to 80°C for pre-dissolution. 4g of butyl acrylate, 4g of styrene, 12g of methacrylic acid, and 1.36g of BPO were mixed and dissolved, and placed in a constant-pressure dropping funnel. in N 2 Under the protection of atmosphere, the temperature of the oil bath was raised to 9...

Embodiment 2

[0036] Preparation of component A:

[0037](1) The initiator BPO is recrystallized, dried and stored at low temperature for later use. The monomer butyl acrylate and styrene were washed with 5% NaOH alkali to remove the polymerization inhibitor, dried and stored at low temperature for later use. Monomer methacrylic acid is distilled under reduced pressure, and ethylene glycol monobutyl ether and n-butanol solvents are distilled and purified for later use.

[0038] (2) Dissolve 35g of bisphenol A type epoxy resin E-20 in 25g of ethylene glycol monobutyl ether and n-butanol co-solvent (2:3), place in 250ml equipped with a condensing device and N 2 In a through-mouth four-necked flask, heat the oil bath to 80°C for pre-dissolution. 4g of butyl acrylate, 4g of styrene, 12g of methacrylic acid, and 1.36g of BPO were mixed and dissolved, and placed in a constant-pressure dropping funnel. in N 2 Under the protection of atmosphere, the temperature of the oil bath was raised to 95°...

Embodiment 3

[0054] Preparation of component A:

[0055] (1) The initiator BPO is recrystallized, dried and stored at low temperature for later use. The monomer butyl acrylate and styrene were washed with 5% NaOH alkali to remove the polymerization inhibitor, dried and stored at low temperature for future use. Monomer methacrylic acid is distilled under reduced pressure, and ethylene glycol monobutyl ether and n-butanol solvents are distilled and purified for later use.

[0056] (2) Dissolve 35g of bisphenol A type epoxy resin E-51 in 25g of ethylene glycol monobutyl ether and n-butanol co-solvent (2:3), place in 250ml equipped with a condensing device and N 2 In a through-mouth four-necked flask, heat the oil bath to 80°C for pre-dissolution. 5g of butyl acrylate, 5g of styrene, 15g of methacrylic acid, and 1.75g ​​of BPO were mixed and dissolved, and placed in a constant-pressure dropping funnel. in N 2 Under the protection of atmosphere, the temperature of the oil bath was raised to...

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Abstract

The invention relates to high-solid-content anionic self-emulsified water-borne epoxy resin emulsion and a preparation method thereof, and solves the technical problems of low solid content, high VOC content, addition of an emulsifier and complex synthesis processes. The high-solid-content anionic self-emulsified water-borne epoxy resin comprises epoxy resin grafted with methacrylic acid, glycidyl methacrylate, a crylic acid monomer segmented copolymer and nano-crystalline cellulose. The invention further provides a preparation method of the high-solid-content anionic self-emulsified water-borne epoxy resin. The high-solid-content anionic self-emulsified water-borne epoxy resin can be applied to the field of preparation of epoxy resin emulsion.

Description

technical field [0001] The invention relates to the field of materials, in particular to a high-solid-content anionic self-emulsifying water-based epoxy resin emulsion and a preparation method thereof. Background technique [0002] Due to its excellent mechanical properties of high strength and high modulus, carbon fiber is widely used in aerospace, sporting goods, construction industries, etc. However, carbon fiber is also a brittle material, and it is easy to fluff and break due to friction during the production and preparation process. In addition, when it is combined with resin to make composite materials, the wetting type with the matrix is ​​very poor. Therefore, in order to avoid these defects, generally carbon fibers need to be sizing. At present, the common types of carbon fiber sizing agents include epoxy resin sizing agents, polyurethane sizing agents and composite sizing agents. Among them, the epoxy resin type sizing agent is the most widely used, and its com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/08C08L53/00C08L1/02C08F283/10C08F220/06C08F220/18C08F212/08C08F293/00
Inventor 李鹏吴梦雨臧圣彪田俊鹏杨小平
Owner BEIJING UNIV OF CHEM TECH
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