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Composite modified soybean protein adhesive as well as production method and application thereof

A technology of soybean protein and compound modification, applied in the direction of protein adhesives, adhesives, adhesive types, etc., can solve the problems of poor water resistance and low strength, and achieve the effect of excellent bonding strength and water resistance.

Inactive Publication Date: 2010-10-13
SOYBEAN TECH DEV RES CENT HEILONGJIANG PROV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first technical problem to be solved by the present invention is to overcome the defects of low strength and poor water resistance of existing soybean protein adhesives, and provide a soybean protein adhesive with high strength and excellent water resistance;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 Preparation of composite modified soybean protein adhesive

[0033] First, slowly add 20% KOH aqueous solution into water to prepare a KOH aqueous solution with a pH value of 8; measure 100ml of alkaline aqueous solution, slowly add 1g of sodium dodecylbenzenesulfonate, heat up to 30°C, and stir Slowly add 8g of soybean protein isolate, react at this temperature for 3 hours, cool down to room temperature, and let stand for 24 hours; raise the temperature of the reaction solution to 35°C, adjust the stirring speed to 60-80 rpm, first add 1g of urea, React for 1 hour, then add 0.4g of phosphorus oxychloride, react for 1 hour, then add 0.2g of N-hydroxysulfosuccinimide, and react for 2 hours; finally add 10g of activated clay, stir evenly; cool to obtain.

Embodiment 2

[0034] Embodiment 2 Preparation of composite modified soybean protein adhesive

[0035] First use 10% NaOH to prepare an aqueous NaOH solution with a pH value of 9; slowly add 0.5 g of polyoxyethylene sorbitan monostearate to 110 ml of the above solution, raise the temperature to 30 ° C, and slowly add 20 g of The soy protein isolate was reacted at this temperature for 5 hours, cooled to room temperature, and left to stand for 20 hours; the temperature of the reaction solution was raised to 45°C, the stirring speed was adjusted to 60-80 rpm, 10g of urea was added, and the reaction was carried out for 2 hours. Then add 5g of N-hydroxysuccinimide and react for 2 hours; finally add 15g of diatomaceous earth and stir evenly; cool to obtain the adhesive product.

Embodiment 3

[0036] Embodiment 3 Preparation of composite modified soybean protein adhesive

[0037]First use 5% Ca(OH) 2 Ca(OH) adjusted to pH 10 2 Aqueous solution: Slowly add 2g of sodium dioctyl sulfosuccinate to 100ml of the above solution, raise the temperature to 40°C, slowly add 18g of soybean protein concentrate under stirring, react at this temperature for 4 hours, cool down to room temperature, and let stand 24 hours; heat the reaction solution to 40°C, adjust the stirring rate to 60-80 rpm, add 5g glyceryl monostearate, react for 1 hour, then add 3g N-hydroxysuccinimide, react for 2 hours ; Finally, add 3g of talcum powder and stir evenly; cool to obtain the adhesive product.

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PUM

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Abstract

The invention discloses a composite modified soybean protein adhesive as well as a production method and application thereof. The composite modified soybean protein adhesive comprises the following components: an alkaline water solution of surfactant, soybean protein products, a modifier, a cross-linking agent and fillers. In the invention, soybean protein molecules are modified by using a composite modifying method of degradation-crosslinking, the wetting property of the adhesive on wood surfaces is improved through degradation, and intermolecular cohesive forces of the solidified adhesive are improved through crosslinking. The composite modified soybean protein adhesive is water adhesive, which is nontoxic and pollution-free and has excellent glue joint strength and water resistant property, and can be used as the adhesive for processing man-made planks instead of traditional phenolic resin adhesives, urea-formaldehyde resin adhesives and melamine-formaldehyde resin adhesives.

Description

technical field [0001] The invention relates to a wood adhesive, in particular to a composite modified soybean protein adhesive and a production method thereof. The invention also relates to the application of the composite modified soybean protein adhesive in the manufacture of artificial boards, belonging to the field of wood adhesives. Background technique [0002] In today's world adhesive market, the consumption of adhesives in the wood processing industry is the largest, especially the processing of wood-based panels consumes the largest amount of adhesives. The processing of wood-based panels mainly uses phenolic resin adhesives, urea-formaldehyde resin adhesives and melamine-formaldehyde resin adhesives, which are commonly referred to as "trialdehyde adhesives". However, the artificial panels made of "trialdehyde glue" will continuously release formaldehyde during the process of manufacture and use, endangering the environment and human health. At the same time, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00B27D1/04
Inventor 郑环宇许慧龙军张平磊冯晓孙树坤赵英李宏伟
Owner SOYBEAN TECH DEV RES CENT HEILONGJIANG PROV
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