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Waterproof soybean meal adhesive and preparation method thereof

A technology of gluten and adhesive is applied in the field of adhesives based on soybean protein, which can solve problems such as hindering the large-scale popularization and application of wood-based panels, and achieve the effects of saving production costs, increasing added value and lowering prices.

Active Publication Date: 2016-05-04
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of a large number of hydrophilic groups in the molecular structure, the prepared adhesive has shortcomings such as water resistance, bonding strength, viscosity, and stability, which hinder its large-scale application in wood-based panel manufacturing.

Method used

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  • Waterproof soybean meal adhesive and preparation method thereof
  • Waterproof soybean meal adhesive and preparation method thereof
  • Waterproof soybean meal adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation of embodiment 1 modified nanocellulose

[0037] The proportion by weight of the nanocellulose modified raw material is: dispersion medium: 90 parts, nanocellulose: 10 parts, surface modifier: 20 parts. The modification process is carried out according to the following steps:

[0038] 1) Disperse the surface modifier γ-glycidyl etheroxypropyl trimethoxysilane in ethanol / water mixed solvent (90 / 10, V / V), 2) adjust the pH value to 4.0 with acetic acid; 3) add nano Cellulose; 4) reflux reaction for 4 hours; 5) filter, dry, and set aside.

[0039] The modified nanocellulose prepared in this example was used for subsequent experiments.

Embodiment 2

[0041] 1) Prepare materials according to the following weight ratio:

[0042]

[0043] 2) In a reaction kettle equipped with a stirrer, a thermometer and a condensing device (the reaction is carried out at normal temperature), add all the tap water and soybean meal and stir evenly.

[0044] 3) Add glycerol triglycidyl ether and modified nanocellulose and stir evenly to prepare uniform soybean protein mucilage.

[0045] 4) The above-mentioned mucus is processed by a homogenizer after passing through a colloid mill, and the homogenization pressure is 25MPa.

[0046] Three batches of parallel samples were prepared by the same process, and the performance and quality indicators of the adhesive obtained are shown in Table 1.

[0047] Example 2

[0048] 1) Prepare materials according to the following weight ratio:

[0049]

[0050] 2) In a reaction kettle equipped with a stirrer, a thermometer and a condensing device, add all the tap water and soybean meal powder, and stir ...

Embodiment 3

[0055] 1) Prepare materials according to the following weight ratio:

[0056]

[0057] 2) In a reaction kettle equipped with a stirrer, a thermometer and a condensing device, add all the tap water and soybean meal powder, and stir evenly.

[0058] 3) adding ethylene glycol diglycidyl ether and modified nanocellulose and stirring evenly to prepare uniform soybean protein mucilage.

[0059] 4) The above-mentioned mucus is processed by a homogenizer after passing through a colloid mill, and the homogenization pressure is 25MPa.

[0060] Among them, the quality index of soybean protein adhesive is shown in Table 1.

[0061] Table 1 Performance Index of Soybean Protein Adhesive

[0062]

[0063] The prepared adhesive sample has a storage period of 3-5 days (after 3-5 days, there will be local mildew or odor, but the bonding performance will not be affected).

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Abstract

The invention provides a waterproof soybean meal adhesive, consisting of the following components in parts by weight: 70-80 parts of water, 0.2-1.0 part of modified nano cellulose, 20-35 parts of degreased soybean meal, and 1-10 parts of a reinforcer. The modified soybean protein adhesive for a veneer board, provided by the invention, has the main component of soybean meal, and has the advantages of being low in price, easy to treat and regenerate, and an adhered veneer board does not have a problem of formaldehyde emission, so that the problem of formaldehyde pollution in indoor air caused by artificial boards is thoroughly solved. The soybean protein adhesive provided by the invention is prepared by processing degreased soybean meal, so that soybean processing remainders are effectively utilized, resources are comprehensively utilized, the production cost is saved, and the added value of a product is improved.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to an adhesive based on soybean protein and a preparation method thereof. Background technique [0002] Since the reform and opening up, my country's wood-based panel industry has developed rapidly, and its annual output has increased from 996,000 cubic meters in 1980 to 302 million cubic meters in 2014. In 2003, the output surpassed that of the United States and became the largest producer and consumer of wood-based panels and wood adhesives in the world. [0003] During the "Eleventh Five-Year Plan" period, the timber industry has achieved great development along with the rapid growth of the national economy, but it still faces problems such as low concentration, coexistence of modern production and handcraft workshops, and overall product quality. The Outline of the "Twelfth Five-Year Plan" for forestry clearly stated that we must rely on scientific and technological innovat...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J101/28C09J105/00C09J11/08C09J11/06C08B11/04
CPCC08B11/04C08L2205/03C09J11/06C09J11/08C09J189/00C08L1/28C08L5/00C08K5/1515
Inventor 张世锋王开立康海娇王钟李建章
Owner BEIJING FORESTRY UNIVERSITY
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