Water-borne epoxy resin cross-linking agent, modified protein adhesive and application

A water-based epoxy resin and cross-linking agent technology, which is applied in the direction of protein adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of unfavorable practical application and poor water resistance of protein adhesives, and achieve important Economic and social benefits, solving the problem of excessive dependence, and ensuring the effect of water resistance

Active Publication Date: 2020-06-05
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, too many hydrophilic groups in the emulsion will lead to poor water resistance of the modified protein adhesive, which is not conducive to practical application.

Method used

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  • Water-borne epoxy resin cross-linking agent, modified protein adhesive and application
  • Water-borne epoxy resin cross-linking agent, modified protein adhesive and application
  • Water-borne epoxy resin cross-linking agent, modified protein adhesive and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The present embodiment provides a kind of aqueous epoxy resin crosslinking agent, and it is made by the raw material of following weight ratio:

[0086]

[0087] Present embodiment also provides the preparation method of this aqueous epoxy resin crosslinking agent, as follows:

[0088] Add 35kg of epoxy resin (E44), 20kg of ethylene glycol monobutyl ether, and 20kg of n-butanol into a four-neck flask, heat and stir at a speed of 700 rpm to raise the temperature to about 110°C;

[0089] Add a mixed solution of 8 kg of methacrylic acid, 6 kg of methyl methacrylate, 6 kg of styrene and 0.8 kg of benzoyl peroxide dropwise with a constant pressure dropping funnel within 2 hours, while raising the temperature to about 120 ° C, and keep the temperature for 2 hours;

[0090] After the reaction was completed, the temperature was lowered to 85°C, a mixed solution of 8kg triethylamine and 100kg water was added and stirred at a high speed of 6000 rpm, and kept at 50°C for 1 hour...

Embodiment 2

[0100] The present embodiment provides a kind of aqueous epoxy resin crosslinking agent, and it is made by the raw material of following weight ratio:

[0101]

[0102] The present embodiment also provides the preparation method of this aqueous epoxy resin crosslinking agent, specifically as follows:

[0103] Add 36kg of epoxy resin (E44), 10kg of ethylene glycol monobutyl ether, and 30kg of n-butanol into a four-neck flask, heat and stir at a speed of 1000 rpm to raise the temperature to about 110°C.

[0104] Add a mixed solution of 10kg of methacrylic acid, 7kg of methyl methacrylate, 8kg of styrene and 0.9kg of benzoyl peroxide dropwise with a constant pressure dropping funnel within 2 hours, while raising the temperature to about 120°C, and keep the temperature for 2 hours.

[0105] After the reaction was completed, the temperature was lowered to 85°C, a mixed solution of 9kg of triethanolamine and 100kg of water was added and stirred at a high speed at a speed of 7000 ...

Embodiment 3

[0116] The present embodiment provides a kind of aqueous epoxy resin crosslinking agent, and it is made by the raw material of following weight ratio:

[0117]

[0118] Present embodiment also provides the preparation method of this aqueous epoxy resin crosslinking agent, as follows:

[0119] Add 40kg of epoxy resin (E44) and 40kg of n-butanol into a four-necked flask, heat and stir at a speed of 1200 rpm to raise the temperature to about 110°C.

[0120] Add a mixed solution of 9 kg of methacrylic acid, 7 kg of methyl methacrylate, 7 kg of styrene and 1 kg of benzoyl peroxide dropwise with a constant pressure dropping funnel within 2 hours, while raising the temperature to about 120°C, and keep the temperature for 2 hours.

[0121] After the reaction was completed, the temperature was lowered to 85°C, and a mixed solution of 10kg dimethylethanolamine and 100kg water was added and stirred at a high speed at a speed of 6000 rpm, and kept at 50°C for 1 hour to prepare a water-...

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Abstract

The invention relates to a water-borne epoxy resin cross-linking agent, a modified protein adhesive and application. The water-borne epoxy resin cross-linking agent is prepared from water, an organicsolvent, a comonomer, methacrylic acid, epoxy resin, an initiator and a neutralizing salt. The water-borne epoxy resin cross-linking agent provided by the embodiment of the invention is high in reaction activity, can be uniformly dispersed in the modified protein adhesive, and can cross-link and seal protein molecule hydrophilic groups during curing. The embodiment of the invention also provides the modified protein adhesive containing the cross-linking agent. Experiments show that the modified protein adhesive prepared from the water-borne epoxy resin cross-linking agent has the advantages ofhigher bonding strength, good water resistance, low cost, high cross-linking density, no formaldehyde release and the like.

Description

technical field [0001] The invention relates to an adhesive, in particular to a water-based epoxy resin crosslinking agent and a modified protein adhesive and their application. Background technique [0002] As an environmentally friendly adhesive, protein adhesive is regarded as an effective substitute for "trialdehyde" adhesives because of its abundant sources, high reactivity, simple preparation, and no formaldehyde release. However, protein adhesives generally have problems such as low bonding strength, poor water resistance, and high cost, which limit the popularization and application of protein adhesives. For this reason, people adopt various methods to modify it. Studies have confirmed that polyamide epichlorohydrin resin (PAE), epoxy diluents, such as ethylene glycol glycidyl ether, neopentyl glycol diglycidyl ether and glycerol polyglycidyl ether, etc. , epoxy group and protein residue ring-opening reaction to cross-link modification of protein. On the one hand,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F220/06C08F212/08C09J11/08C09J189/00
CPCC08F283/10C09J11/08C09J189/00C08F220/06C08L51/08C08F212/08
Inventor 张世锋庞惠文余养伦李建章刘红光
Owner BEIJING FORESTRY UNIVERSITY
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