Water resistant soy protein adhesive for wood processing and preparation method thereof

A soybean protein glue and soybean protein technology, which is applied in the preparation of protein adhesives, animal glue or gelatin, adhesives, etc., can solve the problems of poor water resistance and achieve the effects of good water resistance, low viscosity and high protein content

Inactive Publication Date: 2013-01-16
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem of poor water resistance of existing water-resistant soybean protein adhesives for wood processing, and to provide a water-resistant soybean protein adhesive for wood processing and its preparation method

Method used

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  • Water resistant soy protein adhesive for wood processing and preparation method thereof
  • Water resistant soy protein adhesive for wood processing and preparation method thereof
  • Water resistant soy protein adhesive for wood processing and preparation method thereof

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Experimental program
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Effect test

specific Embodiment approach 1

[0019] Specific Embodiment 1: In this embodiment, the water-resistant soybean protein adhesive for wood processing is degraded by 60-80 parts by weight of defatted soybean protein powder or soybean protein isolate, 6-10 parts of strong alkali and 95 parts of water. , use concentrated acid to adjust the pH value to 6.5-7.5, then add 0.3-3 parts of montmorillonite, and finally add 8-30 parts of polymethylene polyphenyl polyisocyanate and mix well.

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment is different from Embodiment 1 in that the strong base is sodium hydroxide or potassium hydroxide. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the concentrated acid is one or both of concentrated phosphoric acid with a mass concentration of 80-85% and formic acid with a mass concentration of 85-90%. Mixtures of any composition. Others are the same as in the first embodiment.

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Abstract

The invention discloses a water resistant soy protein adhesive for wood processing and a preparation method thereof, relates to an adhesive and solves the technical problem of poor water resistance in prior soy protein adhesives. Defatted soybean protein powers or soy isolate protein, strong base and water are subjected to degradation reaction according to parts by weight, potential of hydrogen (pH) value is adjusted by a concentrated acid, montmorillonite is added, and finally the polyaryl polymethylene isocyanate is added for uniformly mixing to obtain the water resistant soy protein adhesive for the wood processing. According to the obtained water resistant soy protein adhesive for the wood processing, the gelation time is 60 to 180 minutes, and the water resistance is good.

Description

technical field [0001] The invention relates to an adhesive, in particular to a water-resistant soybean protein adhesive for wood processing modified by montmorillonite nano-intercalation and polymethylene polyphenyl polyisocyanate crosslinking. Background technique [0002] Adhesives are the blood of my country's wood-based panel industry. As the world's largest country in the production, consumption and import and export of wood-based panels, China's wood-based panel production has exceeded 235 million cubic meters in 2011. Therefore, the annual adhesive used for wood-based panel production exceeds 11 million tons in terms of solid content , and most of them belong to synthetic resin adhesives. [0003] Due to the strong dependence of synthetic resin adhesives on petroleum, in the situation of the increasing consumption of non-renewable and limited petroleum resources, it is necessary to develop and utilize abundant and renewable biomass resources to prepare environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/04C09J11/06
Inventor 高振华张跃宏朱伍权陆莹顾继友
Owner NORTHEAST FORESTRY UNIVERSITY
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