Soybean meal adhesive for blockboards, and preparation method thereof

A technology for blockboard and adhesive, applied in the field of boards, can solve the problems of limited industrial application of wood-based panels, such as durability, free formaldehyde release, poor water-resistant bonding performance, etc. performance, the effect of improving the initial viscosity

Active Publication Date: 2020-09-18
DEHUA TB NEW DECORATION MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of soybean meal adhesives to prepare wood-based panels can effectively solve the problem of free formaldehyde release from wood-based panels. The Chinese patent with the publication number CN201710505045.8 discloses an adhesive

Method used

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  • Soybean meal adhesive for blockboards, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] A soybean meal adhesive for blockboard, comprising the following components: 22g soybean meal powder, 86g distilled water, 2g trypsin, 1g compound viscosity modifier, 2g branched polymer crosslinking agent, 0.04g calcium phosphate;

[0030] The preparation method of the branched polymer crosslinking agent includes the following steps:

[0031] S1. After reacting phthalic acid, maleic anhydride, and diethylene triamine at 150°C, the temperature is lowered and diluted to obtain a hyperbranched amino polymer;

[0032] S2. After mixing epichlorohydrin, solvent, and the hyperbranched amino polymer to react at 60° C., adjust the pH to 8 to obtain the branched polymer crosslinking agent;

[0033] The composite viscosity modifier includes polyvinyl alcohol, sodium carboxymethyl cellulose, and bentonite in a mass ratio of 1:1:5.

Example Embodiment

[0034] Example 2

[0035] A soybean meal adhesive for blockboard, including the following components: 26g of soybean meal powder with protein content of 43%-45%, particle size of 160 mesh, 86g of distilled water with pH of 7.3-7.5, 3g of trypsin, 2g of complex viscosity Regulator, 3g branched polymer crosslinking agent, 0.08g calcium phosphate;

[0036] The preparation method of the branched polymer crosslinking agent includes the following steps:

[0037] S1. After reacting 0.9 mol of phthalic acid, 0.1 mol of maleic anhydride, and 1.4 mol of diethylene triamine at 150°C for 3 hours, reduce the temperature and dilute with water to obtain hyperbranched amino polymer, which is diluted with water to hyperbranched amino polymer The quality score is 25%;

[0038] S2. Mix 25 g of epichlorohydrin, 50 g of water, and the 50 g of hyperbranched amino polymer with a mass fraction of 25% to react at 60° C., and adjust the pH to 8 to obtain the branched polymer crosslinking agent.

[0039] The co...

Example Embodiment

[0040] Example 3

[0041] A soybean meal adhesive for blockboard, including the following components: 25g of soybean meal powder with a protein content of 43%-45%, a particle size of 160 mesh, 86g of distilled water with a pH of 7.3-7.5, 2.5g of trypsin, and 1.5g Complex viscosity modifier, 2.5g branched polymer crosslinking agent, 0.06g calcium phosphate;

[0042] The preparation method of the branched polymer crosslinking agent includes the following steps:

[0043] S1. After reacting 1.8mol of phthalic acid, 0.2mol of maleic anhydride, and 2.8mol of diethylenetriamine at 150℃ for 3h, reduce the temperature and dilute with water to obtain hyperbranched amino polymer, which is diluted with water to hyperbranched amino polymer The quality score is 30%;

[0044] S2. Mix 50 g of epichlorohydrin, 100 g of water, and the 100 g of hyperbranched amino polymer with a mass fraction of 25%, and react at 60° C., and adjust the pH to 8 to obtain the branched polymer crosslinking agent.

[0045] ...

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Abstract

The invention discloses a soybean meal adhesive for blockboards, and a preparation method thereof. The adhesive comprises, by mass, 22-26 parts of soybean meal powder, 86 parts of a dispersing agent,2-3 parts of trypsin, 1-2 parts of a composite viscosity regulator, 2-3 parts of a branched polymer cross-linking agent and 0.04-0.04 part of calcium phosphate. The preparation method comprises the following steps: K1, performing plasma treatment on the soybean meal powder in a nitrogen atmosphere, then adding calcium chloride and the dispersing agent, performing ultrasonic treatment, adding trypsin, performing treatment at 50-60 DEG C for 20 minutes, cooling, adding phosphoric acid, and performing uniform stirring to obtain a first mixture; and K2, adding calcium phosphate and the branched polymer cross-linking agent into the first mixture, uniformly stirring, adding the composite viscosity regulator, mixing, and regulating the pH value to 9.0 to obtain the soybean meal adhesive for the blockboards. The adhesive is good in water-resistant adhesive property, and ensures the practical performance of the adhesive and the durability of the blockboards.

Description

technical field [0001] The invention relates to the technical field of boards, in particular to a soybean meal adhesive for blockboards and a preparation method thereof. Background technique [0002] my country has abundant artificial forest resources, but it cannot be directly used as furniture and other materials. The artificial board prepared by using artificial forest fast-growing wood through adhesive is the main raw material for furniture flooring and interior decoration in the living environment. In recent years, my country's joinery The output of board is 16 million cubic meters per year, among which urea-formaldehyde resin and its modified products account for more than 90% of the total output of adhesives, occupying a dominant position. Urea-formaldehyde resin adhesives are widely used in the wood industry due to the advantages of sufficient raw materials, low price, and good water solubility, but there is a problem of formaldehyde release from products. With the i...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J11/08C09J11/04C08G83/00
CPCC08G83/005C08K2003/325C08L2205/025C08L2205/035C08L2312/00C09J11/04C09J11/08C09J189/00C08L89/00C08L29/04C08L1/286C08L87/00C08K3/346C08K3/32
Inventor 高强李建章詹先旭贾焕亮杨勇
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
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