Tough soybean meal protein adhesive and preparation method thereof

An adhesive and protein glue technology, which is applied in the preparation of protein adhesives, animal glue or gelatin, adhesives, etc., can solve the problem of formaldehyde release from glued wood-based panels, uneven distribution of cross-linked structures, and dry strength of floor substrates Poor and other problems, to achieve excellent bonding performance, improve the performance of adhesives, and good water resistance

Active Publication Date: 2019-04-26
SCHOLAR HOME SHANGHAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, urea-formaldehyde resin and its modified products have obvious disadvantages, such as poor aging resistance and poor water resistance. The fatal disadvantage is the release of formaldehyde from glued wood-based panels, which pollutes the living environment and damages people's health.
[0003] The use of soybean protein adhesives to prepare floor substrates can solve the problem of free formaldehyde release from wood-based panels, but there are problems such as poor dry strength and unstable production of prepared floor substrates. This is because the raw material soybean meal used to prepare protein adhesives has poor solubility , large particles, large molecular weight, on the other hand, after modification, the adhesive is brittle and the cross-linking structure is unevenly distributed, resulting in that although the average strength meets the requirements, the bonding quality of different areas of wood-based panels varies greatly, and the bonding strength is not good. Stable, low productivity

Method used

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  • Tough soybean meal protein adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a method for preparing raw materials of an aldehyde-free protein adhesive, and the adhesive is prepared according to the following weight ratio:

[0030] Demineralized water 70 kg

[0031] Defatted Soy Protein Powder 35 kg

[0032] Polysaccharase 0.1kg

[0033] Cellulase 0.1kg

[0034] Sodium hypochlorite 2.0kg

[0035] Triethylenetetramine 0.2kg

[0036] Toughener 1.0kg

[0037] Polyether polyol diglycidyl ether 2.0kg

[0038] Among them, defatted soy protein powder with a protein content of more than 52% was purchased from Huifu Grain and Oil Co., Ltd.; other materials were purchased from Beijing Chemical Reagent Co., Ltd.

[0039] This embodiment also provides the preparation method of the above-mentioned soybean meal protein adhesive: stir the prepared soybean meal protein adhesive prepolymer and polyether polyol diglycidyl ether at room temperature for 10 minutes, stir well and then use.

Embodiment 2

[0041] This embodiment provides a method for preparing raw materials of an aldehyde-free protein adhesive, and the adhesive is prepared according to the following weight ratio:

[0042] Demineralized water 70 kg

[0043] Defatted Soy Protein Powder 35 kg

[0044] Polysaccharase 0.3kg

[0045] Cellulase 0.1kg

[0046] Sodium hypochlorite 5.0kg

[0047] Triethylenetetramine 0.5kg

[0048] Toughener 3.0kg

[0049] Polyether polyol diglycidyl ether 4.0kg

[0050] Among them, defatted soy protein powder with a protein content of more than 52% was purchased from Huifu Grain and Oil Co., Ltd.; other materials were purchased from Beijing Chemical Reagent Co., Ltd.

[0051] The preparation method of the adhesive described in this embodiment is the same as that in Example 1.

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Abstract

The invention discloses a protein adhesive raw material and a preparation method thereof. The protein adhesive raw material is prepared from 35 parts by weight of soybean meal powder, 0.1-0.3 parts byweight of polysaccharase, 70 parts by weight of water as a dispersion medium, 2-5 parts by weight of sodium hypochlorite, 0.2-0.5 parts by weight of triethylene tetramine, 1-3 parts by weight of a toughening agent and 2-4 parts by weight of polyether polyol diglycidyl ether. The toughening agent is a vinyl acetate, acrylamide and glyoxal polymer. The protein adhesive raw material and the preparation method thereof have the advantages as follows: soybean meal molecules are linked with the toughening agent by polyether polyol diglycidyl ether, a toughness system is formed, so that molecular reactivity, water solubility and toughness of the adhesive are improved, water resistance and bonding performance of the adhesive are high, and a floor base material prepared from the adhesive is high instability and good in water resistance; the requirement for water resistance of the adhesive for the floor base material can be met, and practicability of the protein adhesive is guaranteed.

Description

technical field [0001] The invention relates to a tough soybean meal protein adhesive and a preparation method thereof, which are used for preparing floor substrates and belong to the field of soybean meal protein adhesives. Background technique [0002] my country has abundant artificial forest resources. The multi-layer plywood prepared by using artificial forest through adhesive is the main raw material of multi-layer solid wood composite flooring. The current floor substrate mainly uses urea-formaldehyde resin and its modified products. However, urea-formaldehyde resin and its modified products have obvious disadvantages, such as poor aging resistance and poor water resistance. The fatal disadvantage is that there is a problem of formaldehyde release in glued wood-based panels, which pollutes the living environment and damages people's health. [0003] The use of soybean protein adhesives to prepare floor substrates can solve the problem of free formaldehyde release from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J171/02C09J105/00C09J101/02C09J11/08
CPCC09J11/08C09J189/00C08L2205/06C08L2205/035C08L2312/00C08L71/02C08L5/00C08L1/02C08L31/04Y02P60/87
Inventor 卜立新卜洪伟高强
Owner SCHOLAR HOME SHANGHAI NEW MATERIAL CO LTD
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