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Soybean meal adhesive and preparation method thereof

An adhesive and soybean meal technology, applied in the field of soybean meal adhesive and its preparation, can solve the problems of free formaldehyde emission of wood-based panels, limit the durability of wood-based panels, poor water-resistant bonding performance, etc., and achieve no harmful substances released. , The effect of improving preloading and reducing viscosity

Active Publication Date: 2020-03-20
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, but soybean meal adhesives also have the problem of poor water resistance and bonding performance, which limits its industrial application and the durability of wood-based panels.

Method used

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  • Soybean meal adhesive and preparation method thereof
  • Soybean meal adhesive and preparation method thereof
  • Soybean meal adhesive and preparation method thereof

Examples

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Effect test

preparation example Construction

[0095] The preparation method 1 of modified hydrotalcite-like:

[0096] S21, pretreatment: mixing 10 parts by weight of hydrotalcite-like water with 90 parts by weight of water, adding 1 part by weight of sodium periodate for centrifugal cleaning, to obtain a hydrotalcite pretreatment liquid;

[0097] S22: Modification reaction: react the hydrotalcite pretreatment solution with 14.6 parts by weight of adipic acid and 10.5 parts by weight of diethylenetriamine at 160°C for 3 hours, add water to cool down to a 50wt% solution, and centrifuge to obtain a polymer The modified hydrotalcite is an organic-inorganic compound with long chains interspersed with a hydrotalcite-like hollow structure.

[0098] Preparation method 2 of modified hydrotalcite-like:

[0099] S21, pretreatment: mixing 10 parts by weight of hydrotalcite-like water with 80 parts by weight of water, adding 0.5 parts by weight of sodium periodate for centrifugal cleaning, to obtain a hydrotalcite pretreatment liquid...

Embodiment 1

[0105] The preparation method of soybean meal adhesive comprises the steps:

[0106] (1) Pre-reaction: Weigh each component according to soybean meal adhesive formula 1, add soybean meal powder, water, and treatment agent to the dispersion medium water, treat with ultrasonic for 7 minutes, heat to 50°C and stir for 15 minutes;

[0107] (2) Microphase separation: Molecular reorganization agent, i.e. self-made branched polymer (made by self-made branched polymer by self-made branched polymer preparation method 3) is added in the mixture obtained in step (1), adjust pH=9, React at 70°C for 25 minutes, cool down to 25°C and discharge;

[0108] (3) Cross-linking synthesis: Add the reinforcing agent, namely modified hydrotalcite-like (modified hydrotalcite-like prepared by the preparation method 3 of modified hydrotalcite-like) and cross-linking agent into the mixture obtained in step (2) and stir evenly , sonicate for 15 minutes, add a viscosity modifier, and stir well.

Embodiment 2

[0110] The preparation method of soybean meal adhesive comprises the steps:

[0111] (1) Pre-reaction: Weigh each component according to soybean meal adhesive formula 2, add soybean meal powder, water, and treatment agent to the dispersion medium water, treat with ultrasonic for 14 minutes, heat to 70°C and stir for 25 minutes;

[0112] (2) Microphase separation: Molecular recombination agent, i.e. self-made branched polymer (made by self-made branched polymer by self-made branched polymer preparation method 2) is added in the mixture obtained in step (1), adjust pH=11, React at 90°C for 35 minutes, cool down to 35°C and discharge;

[0113] (3) Cross-linking synthesis: Add the reinforcing agent, namely the modified hydrotalcite-like (modified hydrotalcite-like prepared by the preparation method 2 of the modified hydrotalcite-like) and the cross-linking agent into the mixture obtained in step (2) and stir evenly , sonicate for 25 minutes, add a viscosity modifier, and stir wel...

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Abstract

The invention relates to an adhesive, in particular to a soybean meal adhesive and a preparation method thereof. The soybean meal adhesive comprises the following components in parts by weight: 30-33parts of a main agent, 67-70 parts of a dispersion medium, 2-3 parts of a treatment agent, 1-2 parts of a molecular recombination agent, 2-3 parts of a cross-linking agent, 0.4-0.8 part of a reinforcing agent and 1-2 parts of a viscosity regulator. The preparation method of the soybean meal adhesive comprises the following steps: (1) pre-reaction: adding soybean meal powder, water and the treatment agent into dispersion medium water, carrying out ultrasonic treatment for 7-14 minutes, heating to 50-70 DEG C, and stirring for 15-25 minutes; (2) microphase separation: adding the molecular recombination agent into a mixture obtained in the step (1), adjusting the pH value to 9-11, reacting at 70-90 DEG C for 25-35 minutes, cooling to 25-35 DEG C, and discharging; and (3) cross-linking synthesis: adding the reinforcing agent and the cross-linking agent into a mixed material obtained in the step (2), uniformly stirring, carrying out ultrasonic treatment for 15-25 minutes, adding the viscosity regulator, and uniformly stirring. The soybean meal adhesive disclosed by the invention is high in adhesion degree, good in water resistance and relatively good in stability.

Description

technical field [0001] The invention relates to an adhesive, in particular to a soybean meal adhesive and a preparation method thereof. Background technique [0002] my country has abundant artificial forest resources, but they cannot be directly used as materials such as furniture. Using artificial forest fast-growing wood to prepare wood-based panels through adhesives is the main raw material for furniture floors and interior decoration in the living environment. In 2018, my country's wood-based panels The total output is 299 million cubic meters, accounting for about 50% of the world's total output. More than 65% of them are veneer-based wood-based panel products. According to estimates, the consumption of adhesives for veneer-based wood-based panels in my country in 2018 is about 18 million tons ( Solid content 50%), as the preferred urea-formaldehyde resin and its modified products account for more than 90% of the total output of adhesives, occupying a dominant position. ...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J11/04C09J11/08
CPCC09J11/04C09J11/08C09J189/00C08L77/06C08K9/08C08K3/26
Inventor 高强李建章詹先旭贾焕亮杨勇沈煜燕施岚
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
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