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Method for preparing antiseptic soy protein adhesive

A technology of soybean protein and production method, applied in the directions of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of improving the spoilage properties of soybean adhesives, etc., and achieve the improvement of anti-corrosion performance and excellent water-resistant gluing performance. , the effect of increasing added value

Inactive Publication Date: 2011-06-08
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above three methods are just examples of the production methods of soybean protein adhesives, and do not involve the improvement of the most prone to corruption during the use and storage of soybean adhesives, and there is still room for further improvement in the water resistance and bonding strength of the prepared adhesives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 10g of soybean powder and 100g of water into the reaction vessel, wherein water is the solvent, then add 0.2g of sodium dodecylbenzenesulfonate, heat with a constant temperature water bath, and set the temperature at 60°C, Meanwhile start mixing with a mixer. Control the stirring speed to 60r / min to prevent foaming after the surfactant dissolves. Soybean protein modified by sodium dodecylbenzene sulfonate has its internal hydrophobic end turned outward, thereby increasing the surface hydrophobicity of the protein.

[0025] (2) After the above-mentioned stirring process continued for 2 hours, 5 g of polyphenylpolymethylene polyisocyanate was added into the above-mentioned container to carry out a cross-linking reaction. The mass fraction of isocyanate group-NCO is 29%.

[0026] (3) After the cross-linking reaction was carried out for 1 hour, 0.1 g of compound preservative was added and stirred for 10 minutes to prepare a preservative soybean protein adhesive. ...

Embodiment 2

[0029] (1) Add 20g of soybean protein isolate and 100g of water into the reaction vessel, where water is the solvent, then add 0.5g of sodium dodecylbenzenesulfonate, heat with a constant temperature water bath, and set the temperature at 60°C , while stirring with a mixer. Control the stirring speed to 80r / min to prevent foaming after the surfactant dissolves. Soybean protein modified by sodium dodecylbenzene sulfonate has its internal hydrophobic end turned outward, thereby increasing the surface hydrophobicity of the protein.

[0030] (2) After the above-mentioned stirring process continued for 2 hours, 20 g of polyphenylpolymethylene polyisocyanate was added to the above-mentioned container to perform a cross-linking reaction. The mass fraction of isocyanate group-NCO is 32%.

[0031] (3) After the cross-linking reaction was carried out for 2 hours, 0.5 g of compound preservative was added and stirred for 20 minutes to prepare a preservative soybean protein adhesive.

...

Embodiment 3

[0034] (1) Add 15g of low-temperature soybean meal and 100g of water into the reaction vessel, wherein water is the solvent, then add 0.35g of sodium dodecylbenzenesulfonate, heat with a constant temperature water bath, and set the temperature at 60°C, Meanwhile start mixing with a mixer. Control the stirring speed to 70r / min to prevent foaming after the surfactant dissolves. Soybean protein modified by sodium dodecylbenzene sulfonate has its internal hydrophobic end turned outward, thereby increasing the surface hydrophobicity of the protein.

[0035] (2) After the above-mentioned stirring process continued for 2 hours, 12.5 g of polyphenylpolymethylene polyisocyanate was added into the above-mentioned container to carry out a cross-linking reaction. The mass fraction of isocyanate group-NCO is 30.5%.

[0036] (3) After the crosslinking reaction was carried out for 1.5 hours, 0.3 g of compound preservative was added and stirred for 15 minutes to prepare a preservative soybe...

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Abstract

The invention relates to a method for preparing an antiseptic soy protein adhesive, comprising the following steps of: adding soy protein and water as a solvent to a reaction vessel, adding sodium dodecylbenzenesulfonate, heating in a constant-temperature water bath, setting the temperature at 60 DEG C, and starting to mix by a mixer, wherein the mixing speed is controlled within 60-80r / min to prevent the solved surfactant from foaming, and inner hydrophobic end of the soy protein modified by the sodium dodecylbenzenesulfonate turns outwards, thereby increasing the surface hydrophobicity of the proteins; adding polyphenyl polymethylene polyisocyanate to the reaction vessel to carry out a crosslinking reaction after the mixing process continues 2 hours; and adding a composite antiseptic tomix to prepare the antiseptic soy protein adhesive. After the adhesive prepared with the method provided by the invention is stored for 60 days at the room temperature, the appearance of the adhesiveis changeless, the comprehensive performance of the adhesive is better than that of the traditional similar products, the further processed products of the soy protein are obtained, and the added value of the soy protein is increased.

Description

technical field [0001] The invention relates to a preparation method of an antiseptic soybean protein adhesive. The soybean protein adhesive is mainly used in the production of wood plywood and furniture, and belongs to the technical field of wood adhesives. technical background [0002] The research on soybean-based adhesives began in 1923. Since synthetic resin adhesives made of petrochemical products have better bonding performance and water resistance, soybean-based adhesives have gradually been replaced. In recent years, with the continuous expansion of the adhesive market, issues such as the limited global oil resources and environmental pollution have gradually attracted people's attention; and synthetic resin adhesives contain toxic substances such as formaldehyde and phenol, which will cause problems during production, transportation and use. Great harm to the environment and human health. Therefore, the adhesive industry must consider the use of renewable, environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/12C09J11/06C09J9/00
Inventor 雷文雷蕾景露唐皞
Owner NANJING FORESTRY UNIV
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