Method for preparing corrosion-resistant soybean protein adhesive by using sodium tetraborate as preservative

A technology of sodium tetraborate and soybean protein, which is applied in the directions of protein adhesives, adhesives, adhesive additives, etc., can solve the problems of many process steps, high production cost and high price in the production process, and achieve long storage and transportation period, anti-corrosion and other problems. High-efficiency, low-cost effects

Inactive Publication Date: 2017-04-26
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The organic matter 1,2-benzisothiazolin-3-one and s-triazine involved in the preservative used in the method have certain volatility and toxicity, and the price is relatively expensive. The production process has many technological steps, complicated operation, and high production cost. high

Method used

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  • Method for preparing corrosion-resistant soybean protein adhesive by using sodium tetraborate as preservative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 2.5Kg of sodium tetraborate and 100Kg of water into the reaction vessel, stir to make the sodium tetraborate completely dissolve in water, then add 11Kg of soybean protein and 4Kg of sodium dodecylbenzenesulfonate, stir and heat The modification reaction was carried out for 4 hours. The stirring speed was 50 rpm and the temperature was 55°C for the first 2 hours, and the stirring speed was 65 rpm and the temperature was 58°C for the next 2 hours. After the reaction, the product was cooled to 25°C to prepare a preservative soybean protein adhesive. The performance index of the tested soybean protein adhesive is shown in Table 1.

Embodiment 2

[0028] Add 30Kg of sodium tetraborate and 1000Kg of water into the reaction vessel, stir to make the sodium tetraborate completely dissolve in water, then add 100Kg of soybean protein and 35Kg of sodium dodecylbenzenesulfonate, stir and heat to modify The reaction time was 4.5 hours. The stirring speed was 40 rpm and the temperature was 58°C for the first 2.5 hours, and the stirring speed was 60 rpm and the temperature was 60°C for the next 2 hours. After the reaction, the product was cooled to 25°C to prepare a preservative soybean protein adhesive. The performance index of the tested soybean protein adhesive is shown in Table 1.

Embodiment 3

[0030] Add 28Kg of sodium tetraborate and 1000Kg of water into the reaction vessel, stir to make the sodium tetraborate completely dissolve in water, then add 110Kg of soybean protein and 38Kg of sodium dodecylbenzenesulfonate, stir and heat to modify The reaction was carried out for 4 hours, the stirring speed was 32rpm and the temperature was 55°C for the first 2 hours, and the stirring speed was 65rpm and the temperature was 60°C for the next 2 hours. After the reaction, the product was cooled to 30°C to prepare a preservative soybean protein adhesive. The performance index of the tested soybean protein adhesive is shown in Table 1.

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Abstract

The invention relates to the technical field of timber adhesives, and in particular to a method for preparing a corrosion-resistant soybean protein adhesive by using sodium tetraborate as a preservative. The steps of the method are as follows: after sodium tetraborate and water are added into a reaction vessel and sufficiently dissolved, soybean protein powder and sodium dodecylbenzene sulfonate modifier are then added in sequence, modification reaction takes place by heating under the condition of agitation, and after the reaction ends, the corrosion-resistant soybean protein adhesive is obtained by cooling. The storage and transportation period of the soybean protein adhesive prepared by the invention can reach more than six months under a normal temperature, the soybean protein adhesive is nontoxic, and has a good bonding effect, the bonding strength can be up to 3.5Mpa, and the water-resistant strength reaches 1.4Mpa. Moreover, the preparation process is simple, low in cost and environment-friendly, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to the technical field of wood adhesives, in particular to a method for preparing corrosion-resistant soybean protein adhesives by using sodium tetraborate as a preservative. Background technique [0002] In the production process of wood-based panels, a large amount of adhesives are required. At present, the adhesives used are usually formaldehyde-based adhesives, mainly including urea-formaldehyde resin adhesives, phenolic resin adhesives, and melamine-formaldehyde adhesives. During the production and use of formaldehyde-based adhesives, a large amount of waste water and waste gas containing formaldehyde will be generated, which seriously pollutes the environment. At the same time, the wood-based panels produced with formaldehyde-based adhesives will also release free formaldehyde into the air for a long period of time after they are made into furniture. People living in an environment polluted by formaldehyde for a long time w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/04C09J11/06
CPCC08K3/38C08K5/42C09J11/04C09J11/06C09J189/00
Inventor 杨永彬杨虎刘建容郭秀强鲁林
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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