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Formaldehyde-free defatted soybean flour-based adhesive for fiberboard and preparation method thereof

A defatted soybean flour and fiberboard technology, which is applied in the preparation of adhesives, animal glue or gelatin, and the types of adhesives, can solve problems such as formaldehyde pollution, save production costs, comprehensively utilize resources, and ensure the effect of bonding strength.

Active Publication Date: 2018-06-08
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention designs a formaldehyde-free defatted soy flour-based adhesive for fiberboard and its preparation method. The product is of high quality and does not contain formaldehyde. The main raw material comes from renewable substances, which completely solves the problem of formaldehyde pollution when using adhesives. problems, and at the same time ensure the practical properties of the adhesive such as water resistance and bonding strength; the preparation method is simple, and does not require a long curing time, easy to operate, and high production efficiency

Method used

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  • Formaldehyde-free defatted soybean flour-based adhesive for fiberboard and preparation method thereof
  • Formaldehyde-free defatted soybean flour-based adhesive for fiberboard and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) Prepare materials according to the following weight:

[0048] Demineralized water 230 kg

[0049] Sodium carbonate 1 kg

[0050] Polyacrylamide 1kg

[0051] Defatted Soy Protein Powder 60 kg

[0052] Protein-ethylene oxide reactant 40 kg;

[0053] 2) Add sodium carbonate and defatted soybean protein powder into demineralized water in a reaction kettle equipped with a stirrer, thermometer and condensing device, and stir evenly;

[0054] 3) Heat the obtained mixture of sodium carbonate, defatted soybean protein powder and demineralized water to 42-46°C and keep it warm for 3 hours;

[0055] 4) Cool down the mixture obtained in the previous step to 35°C to obtain a uniform soy protein mucus;

[0056] 5) Add the protein-ethylene oxide reaction to the soy protein mucus obtained in the previous step, stir evenly, and then spray dry it into a powdery solid to make a soy protein adhesive for wood-based panels.

[0057] The performance and quality indicators of the obta...

Embodiment 2

[0059] 1) Prepare materials according to the following weight:

[0060] Demineralized water 240 kg

[0061] Sodium carbonate 2 kg

[0062] Polyacrylamide 2kg

[0063] Defatted Soy Protein Powder 58 kg

[0064] Protein-ethylene oxide reactant 42 kg;

[0065] 2) Add sodium carbonate and defatted soybean protein powder into demineralized water in a reaction kettle equipped with a stirrer, thermometer and condensing device, and stir evenly;

[0066] 3) Heat the obtained mixture of sodium carbonate, defatted soybean protein powder and demineralized water to 48-51°C and keep it warm for 4 hours;

[0067] 4) Cool down the mixture obtained in the previous step to 40°C to obtain a uniform soy protein mucus;

[0068] 5) Add the protein-ethylene oxide reaction to the soy protein mucus obtained in the previous step, stir evenly, and then spray dry it into a powdery solid to make a soy protein adhesive for wood-based panels.

[0069] The performance and quality indicators of the obta...

Embodiment 3

[0071] 1) Prepare materials according to the following weight:

[0072] Demineralized water 245 kg

[0073] Sodium carbonate 3 kg

[0074] Polyacrylamide 2.5kg

[0075] Defatted Soy Protein Powder 55 kg

[0076] Protein-ethylene oxide reactant 45 kg;

[0077] 2) Add sodium carbonate and defatted soybean protein powder into demineralized water in a reaction kettle equipped with a stirrer, thermometer and condensing device, and stir evenly;

[0078] 3) Heat the obtained mixture of sodium carbonate, defatted soybean protein powder and demineralized water to 58-60°C and keep it warm for 5 hours;

[0079] 4) Cool down the mixture obtained in the previous step to 45°C to obtain a uniform soy protein mucus;

[0080] 5) Add the protein-ethylene oxide reaction to the soy protein mucus obtained in the previous step, stir evenly, and then spray dry it into a powdery solid to make a soy protein adhesive for wood-based panels.

[0081] The performance and quality indicators of the ob...

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Abstract

The invention discloses a formaldehyde-free degreasing soy flour-based adhesive for fiberboards and a preparation method thereof. ~55 parts are prepared; the preparation method includes the steps of dispersion, cross-linking and spray drying; the advantages of the present invention are: the product is of high quality, does not contain formaldehyde, and the main raw materials are derived from renewable substances, which completely solves the formaldehyde pollution when using adhesives problems, and at the same time ensure the practical properties of the adhesive such as water resistance and bonding strength; the preparation method is simple, does not require a long curing time, is convenient to operate, and has high production efficiency.

Description

technical field [0001] The invention relates to an adhesive for wood-based panels, in particular to an formaldehyde-free defatted soybean flour-based adhesive for fiberboards and a preparation method thereof, belonging to the field of adhesives for wood-based panels. Background technique [0002] With the improvement of people's living standards and the continuous and stable development of construction, decoration, packaging, furniture manufacturing and other industries, the output of wood-based panels in my country has grown rapidly. The total output of wood-based panels, plywood, furniture, and wood flooring has ranked first in the world for many years in a row. In 2013, the total output of wood-based panels in my country was 272 million m 3 , accounting for about 50% of the world's total production. Average production of 9m per ton of adhesive 3 According to the calculation of wood-based panels, the consumption of wood adhesives in my country in 2013 was about 30 milli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C09J11/08C09J11/04
Inventor 高强李建章罗晶张纪芝张世锋周文瑞陈惠张伟
Owner BEIJING FORESTRY UNIVERSITY
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