Formaldehyde-free defatted soy flour-based adhesive for fiberboard and preparation method of adhesive

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, and achieve the effects of saving production costs, convenient operation, and comprehensive utilization of resources.

Active Publication Date: 2015-04-08
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 soy flour-based adhesive for fiberboard and preparation method of adhesive

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 defatted soy flour-based adhesive for a fiberboard and a preparation method of the adhesive. The formaldehyde-free defatted soy flour-based adhesive is prepared from 45-65 parts of protein substances, 0.5-5 parts of basic compounds, 0.5-5 parts of an emulsifier and 35-55 parts of a crosslinking enhancer as raw materials. The preparation method comprises the following steps of dispersing, cross-linking and carrying out spray drying. The formaldehyde-free defatted soy flour-based adhesive has the advantages that the product is high in quality and free of formaldehyde; main raw materials are derived from renewable substances, the problem of formaldehyde pollution in use of the adhesive is completely solved and meanwhile, the practical performances such as water resistance and bonding strength of the adhesive are ensured; and the preparation method is simple, convenient to operate and high in production efficiency and very long curing time is not required.

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 Applications(China)
IPC IPC(8): C09J189/00C09J11/08C09J11/04
Inventor 张纪芝高强李建章张世锋周文瑞张伟陈惠
Owner BEIJING FORESTRY UNIVERSITY
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