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Silica sol soybean protein adhesive for fiberboard production and preparation method thereof

A technology for soybean protein and soybean protein isolate, which is applied in the field of silica sol soybean protein adhesive and its preparation, can solve problems such as endangering physical and mental health, endangering physical health, polluting the environment, etc., achieving easy production control, solving environmental pollution, and simple process flow Effect

Active Publication Date: 2020-11-17
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the adhesives used in fiberboard production are usually formaldehyde resin adhesives, among which urea-formaldehyde resin adhesives and phenolic resin adhesives are the most widely used. Formaldehyde resin adhesives will release formaldehyde during production and use, pollute the environment, and endanger people's health healthy
At the same time, the wood-based panels produced with formaldehyde-based resin adhesives will release free formaldehyde into the air for a long period of time after they are made into decoration materials or furniture. People spend a long time in an environment polluted by formaldehyde. Life will cause many adverse reactions and diseases, and even cause cancer, seriously endangering people's physical and mental health

Method used

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  • Silica sol soybean protein adhesive for fiberboard production and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 0.05Kg of sodium tetraborate and 100Kg of water into the reaction vessel, stir to dissolve, then add 5Kg of soybean protein powder, stir and mix thoroughly, then add 2.5Kg of urea, stir and heat to 60°C for modification reaction for 60 minutes, stir The speed is 50rpm. After the reaction, cool the product to 30°C, add 5Kg of silica sol with a solid content of 30% and a pH value of 9 to the product, stir and mix well, then add 10Kg of polyvinyl alcohol aqueous solution with a concentration of 8%, and stir well That is to prepare the silica sol soybean protein adhesive for fiberboard production. The performance index of the tested soybean protein adhesive is shown in Table 1.

Embodiment 2

[0031] Add 0.05Kg of sodium tetraborate and 100Kg of water into the reaction vessel, stir to dissolve, then add 8Kg of soybean protein powder, stir and mix thoroughly, then add 3.5Kg of urea, stir and heat to 60°C for modification reaction for 60 minutes, stir The speed is 50rpm. After the reaction, cool the product to 30°C, add 8Kg of silica sol with a solid content of 20% and a pH value of 7 to the product, stir and mix well, then add 12Kg of polyvinyl alcohol aqueous solution with a concentration of 8%, and stir well That is to prepare the silica sol soybean protein adhesive for fiberboard production. The performance index of the tested soybean protein adhesive is shown in Table 1.

Embodiment 3

[0033] Add 0.03Kg of sodium tetraborate and 100Kg of water into the reaction vessel, stir to dissolve, then add 3.5Kg of soybean protein powder, stir and mix thoroughly, then add 1.5Kg of urea, stir and heat to 55°C for 40 minutes of modification reaction, The stirring speed was 60 rpm. After the reaction, cool the product to 25°C, add 5Kg of silica sol with a solid content of 20% and a pH value of 9 to the product, stir and mix well, then add 8Kg of polyvinyl alcohol aqueous solution with a concentration of 11%, and stir well That is to prepare the silica sol soybean protein adhesive for fiberboard production. The performance index of the tested soybean protein adhesive is shown in Table 1.

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PUM

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Abstract

The invention relates to the technical field of artificial board production, in particular to a silica sol soybean protein adhesive for fiberboard production and a preparation method of the silica solsoybean protein adhesive. The method comprises the following steps: adding sodium tetraborate and water into a reaction container, fully dissolving the components, adding soy isolate protein and urea, heating under a stirring condition, carrying out a modification reaction, cooling after the reaction is finished, adding silica sol and a polyvinyl alcohol solution, and fully stirring the mixture to prepare the silica sol soy protein adhesive for fiberboard production. The fiberboard produced by the silica sol soybean protein adhesive prepared by the method is high in strength, good in moistureresistance, free of formaldehyde pollution, simple in preparation process, low in cost, environment-friendly and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of wood-based board production, in particular to a silica sol soybean protein adhesive that can be used in fiber board production and a preparation method thereof. Background technique [0002] Fiberboard, also known as fiber density board, is a wood-based panel made of wood fiber or other plant fibers with adhesives applied. Fiberboard has the advantages of uniform material, easy processing, and not easy to crack. It is a commonly used artificial board for various decoration and furniture production. The wood fiber used for fiberboard production mainly comes from forest harvesting residues, such as branches, tops, and small-diameter timber. One cubic meter of fiberboard can replace 3 cubic meters of sawn timber or 5 cubic meters of logs. Therefore, the development of fiberboard production is also an effective way for the comprehensive utilization of wood resources. way. [0003] At present, the adhesives ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J129/04C09J11/04C09J11/06
CPCC08K2003/387C09J11/04C09J11/06C09J189/00C08L29/04C08K3/38C08K5/21C08K3/36
Inventor 刘建容杨永彬
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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