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Microbe transglutaminase modified soya flour-based wood adhesive and preparation method thereof

A technology of transglutaminase and wood adhesive, which is applied in the directions of starch adhesive, adhesive type, polymer adhesive additive, etc., can solve the problems of large energy consumption, high cost, environmental pollution, etc. Low cost, safe use, simple production process

Inactive Publication Date: 2010-04-21
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing "trialdehyde glue" adhesive continuously releases formaldehyde, and to improve its water resistance by copolymerizing or blending soybean-based adhesives with synthetic resins, which will cause the presence of volatile toxic substances and consume A large amount of energy, polluting the environment, and the use of soybean protein isolate as a raw material to modify soybean-based adhesives, the problem of high cost, and provide a soybean flour-based wood adhesive modified by microbial transglutaminase and its preparation method

Method used

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  • Microbe transglutaminase modified soya flour-based wood adhesive and preparation method thereof

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specific Embodiment approach 1

[0008] Specific embodiment 1: The soybean flour-based wood adhesive modified by microbial transglutaminase in this embodiment consists of 400-500 parts by mass of water, 80-120 parts of low-temperature defatted soybean powder and 1.0-1.4 parts of microorganisms Made with transglutaminase; the particle size of low-temperature defatted soybean powder is less than 120 mesh; the activity of microbial transglutaminase is 100U / g.

[0009] In this embodiment, the protein content of the low-temperature defatted soybean flour is 52.0% to 54.0%.

specific Embodiment approach 2

[0010] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the soybean flour-based wood adhesive modified by microbial transglutaminase consists of 420-480 parts of water and 90-110 parts of low-temperature defatted soybeans in parts by mass. powder and 1.1 to 1.3 parts of microbial transglutaminase. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the soybean flour-based wood adhesive modified by microbial transglutaminase is composed of 460 parts of water, 100 parts of low-temperature defatted soybean powder and 1.2 parts by mass. produced by microbial transglutaminase. Others are the same as in the first embodiment.

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Abstract

The invention discloses a microbe transglutaminase modified soya flour-based wood adhesive and a preparation method thereof, and relates to a wood adhesive and a preparation method thereof. The microbe transglutaminase modified soya flour-based wood adhesive solves the problems that the conventional formaldehyde-type adhesives constantly release formaldehyde, a mode of copolymerizing or blending a soy-based adhesive and synthetic resin improves the water resistance but causes existing volatile toxic substances, consumes a great deal of energy and pollutes environment, and isolated soy protein is adopted as a raw material to modify the soy-based adhesive to cause high cost. The adhesive of the invention is prepared from water, defatted soya flour and microbe transglutaminase. The preparation method comprises the following steps: 1, weighing raw materials; 2, after temperature rise of the water, adding the defatted soya flour, and stirring to prepare slurry; and 3, adjusting pH value of the slurry, adding the microbe transglutaminase, performing stirring reaction, adjusting pH value, stirring again, discharging, and cooling to room temperature. The adhesive has low formaldehyde release, low cost, low energy consumption and no environmental pollution in the using process.

Description

technical field [0001] The present invention relates to wood adhesive and its preparation method. Background technique [0002] At present, the adhesives used in my country's wood industry are still mainly "three-formaldehyde glue" (urea-formaldehyde resin, phenolic resin and melamine-formaldehyde resin), accounting for more than 80% of the total amount of adhesives used for wood-based panels. Formaldehyde will be continuously released during production, transportation and use, seriously damaging human health (According to Bulletin No. 153 issued by the World Health Organization on June 15, 2004: Formaldehyde can cause human cancer confirmed by the International Agency for Research on Cancer) . Soybean-based adhesives are currently receiving more and more attention due to their advantages of wide source of raw materials, non-toxicity and degradability; however, soybean-based adhesives have poor water resistance, and people often use them to copolymerize or blend with syntheti...

Claims

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Application Information

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IPC IPC(8): C09J103/02C09J11/08
Inventor 王伟宏李飞李晓平翁向丽刘巍
Owner NORTHEAST FORESTRY UNIVERSITY
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