Preparation method of biological protein-based water-tolerant wood adhesive

A wood adhesive and bio-protein technology, which is applied in the field of preparation of bio-protein-based water-resistant wood adhesives, can solve problems such as poor water resistance, formaldehyde endangering human health, and low adhesive strength, and achieve excellent water resistance and preparation The effect of easy operation and low cost

Inactive Publication Date: 2017-05-10
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is that the current wood adhesive is mainly "trialdehyde glue", which easily emits formaldehyde and endangers human health, while the environmental-friendly protein-based adhesive has poor water resistance and glue between wood substrates. In view of the defect of low viscosity strength, it provides a kind of mixture of bean hulls and spider silk, which is initially enzymatically hydrolyzed by lipase, and then further fermented by microorganisms to obtain the base rubber, and then the base gum and wood tar are reacted under the action of surfactants to make the final product. The method of making the adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Take the soybeans and wash them with water, put them in a wooden bucket, immerse in water, soak for 12 hours, mix the soaked soybeans with deionized water at a mass ratio of 1:10, and put them into the graphite feeding port, and collect the slurry after grinding. Filter the obtained slurry with three layers of gauze to remove the bean dregs to obtain soy milk; pour the soy milk obtained above into a pot and boil for 5 minutes, pour the boiled soy milk into a stainless steel tray, put the tray in the refrigerator and let it stand at 4°C After 10 minutes, the surface of the soybean milk will naturally condense into a layer of bean skin. Use tweezers to take the bean skin and cool it naturally for later use; use iron wire to make a ring with a diameter of 10 cm, stick the ring on the bamboo stick, and then wrap the ring to collect 5 Use a knife to cut the collected spider web along the edge of the iron ring, and put it in a high-temperature sterilization tank and sterilize i...

example 2

[0025] Take the soybeans and wash them with water, put them in a wooden bucket, add water and soak for 13 hours, mix the soybeans and deionized water according to the mass ratio of 1:10, and put them into the graphite feeding port, and collect the slurry after grinding. Filter the obtained slurry with three layers of gauze to remove the bean dregs to obtain soy milk; pour the soy milk obtained above into a pot and boil for 8 minutes, pour the boiled soy milk into a stainless steel tray, put the tray in the refrigerator, and let it stand at 5°C After 13 minutes, the surface of the soybean milk will naturally condense into a layer of soybean skin. Use tweezers to take the soybean skin and cool it naturally for later use; use iron wire to make a ring with a diameter of 10 cm, stick the ring on the bamboo stick, and then wrap the ring to collect 6 Use a knife to cut the collected spider web along the edge of the iron ring, and first put it into a high-temperature sterilization tank ...

example 3

[0028] Take the soy beans and wash them with water, put them in a wooden bucket, add water and soak for 14 hours, mix the soaked soybeans with deionized water at a mass ratio of 1:10, and put them into the graphite feeding port, and collect the slurry after grinding. Filter the obtained slurry with three layers of gauze to remove the bean dregs to obtain soy milk; pour the soy milk obtained above into a pot and boil for 10 minutes, pour the boiled soy milk into a stainless steel tray, put the tray in the refrigerator, and let it stand at 6°C After 15 minutes, the surface of the soybean milk will naturally condense into a layer of bean skin. Take the bean skin with tweezers and let it cool naturally. Use iron wire to make a ring with a diameter of 10 cm, stick the ring on the bamboo stick, and then wrap the ring to collect 7 Use a knife to cut the collected spider web along the edge of the iron ring, and put it in a high-temperature sterilization tank and sterilize it at 120°C fo...

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Abstract

The invention relates to a preparation method of a biological protein-based water-tolerant wood adhesive, and belongs to the technical field of adhesive preparation. Fat and oil layer substances contained in protein-rich beancurd skin and spider silk which are taken as raw materials are used for degrading grease under the action of enzyme and microorganisms, the number of hydrophobic ester groups on the surface of protein is increased, and accordingly, the water tolerance of the protein is improved; then the protein is modified with lye, polar compact protein molecules are dispersed, and more protein subunits and hydrophobic groups in the protein are exposed, so that the contact area of the protein with wood surface is increased while the protein is water-tolerant, and the adhesion capacity of the protein is increased; then the chemical bonding force is generated between colloid and a wood substrate through the doping of wood tar, the adhesion strength of the adhesive is further improved, concentration is performed finally, and the adhesive is prepared. The prepared wood adhesive has good water tolerance, high adhesion strength and excellent application prospect.

Description

Technical field [0001] The invention relates to a preparation method of a biological protein-based water-resistant wood adhesive, and belongs to the technical field of adhesive preparation. Background technique [0002] At present, the most used adhesive in the wood-based panel industry is still "trialdehyde glue" (ie urea-formaldehyde resin, phenolic resin and melamine-formaldehyde resin adhesives), due to the existence of "trialdehyde glue" and its adhesive products that are harmful to human health and the environment Pollution causes great harm to free formaldehyde, and its main raw material is non-renewable. Therefore, the use of renewable resources to prepare environmentally friendly wood adhesives to partially replace "trialdehyde glue" is the development trend of wood adhesives. [0003] Protein adhesive is an environmentally friendly adhesive with many advantages, such as short production cycle, large output, low price, renewable raw materials, and no free formaldehyde rele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J195/00C09J11/06C12P1/04C12R1/385
CPCC09J11/06C09J189/00C12P1/04C12N1/205C12R2001/385C08L95/00C08K5/17
Inventor 皮蒙雷春生林大伟
Owner CHANGZHOU UNIV
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