Soybean protein adhesive for plywood and preparation method of soybean protein adhesive

A soybean protein and adhesive technology, applied in the field of wood processing, can solve the problems of unsatisfactory stability and viscosity, insignificant synergy, poor practicability, etc., and achieve the effect of increasing added value, abundant sources and ensuring practical performance.

Pending Publication Date: 2019-10-18
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual use process, it was found that due to the complexity of its components and the lack of obvious synergistic effect between them, its stability and viscosity were not ideal, and its practicability was poor. Therefore, it is still necessary to propose an environmentally friendly soybean protein with excellent performance. adhesive

Method used

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  • Soybean protein adhesive for plywood and preparation method of soybean protein adhesive
  • Soybean protein adhesive for plywood and preparation method of soybean protein adhesive
  • Soybean protein adhesive for plywood and preparation method of soybean protein adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Prepare materials according to the following weight ratio:

[0039]

[0040]Among them, the emulsifier is a powder prepared by the School of Resources, Environment and Materials of Guangxi University, including sodium lauryl sulfate: 1.2 parts, sodium dodecylbenzenesulfonate: 1 part, and mix them evenly; the enhancer is methyl Glyceryl acrylate, the initiator is ammonium persulfate.

[0041] 2) Add all the demineralized water, sodium carbonate and soybean protein powder into the reaction kettle equipped with a stirrer, thermometer and condensing device, and stir evenly;

[0042] 3) Heating to 45° C. and keeping the temperature for 3 hours to obtain a mixture.

[0043] 4) The mixture is cooled to room temperature to obtain a uniform soy protein mucus.

[0044] 5) Add an emulsifier to the soy protein mucus and stir evenly to make it emulsify.

[0045] 6) Continue to add the enhancer and initiator to it, and stir evenly.

[0046] 7) Heating to 45°C, keeping the t...

Embodiment 2

[0049] 1) Prepare materials according to the following weight ratio:

[0050]

[0051] Among them, the emulsifier is a powder prepared by the School of Resources, Environment and Materials of Guangxi University, including sodium lauryl sulfate: 1 part, sodium dodecylbenzenesulfonate: 1 part, and mix them evenly; the enhancer is methyl Glyceryl acrylate solution, the initiator is ammonium persulfate.

[0052] 2) Add all the demineralized water, sodium carbonate and soybean protein powder into the reaction kettle equipped with a stirrer, thermometer and condensing device, and stir evenly;

[0053] 3) Heating to 42° C. and keeping the temperature for 6 hours to obtain a mixture.

[0054] 4) The mixture is cooled to room temperature to obtain a uniform soy protein mucus.

[0055] 5) Add an emulsifier to the soy protein mucus and stir evenly to make it emulsify.

[0056] 6) Continue to add the enhancer and initiator to it, and stir evenly.

[0057] 7) Heating to 50°C, keepin...

Embodiment 3

[0060] 1) Prepare materials according to the following weight ratio:

[0061]

[0062] Among them, the emulsifier is a powder prepared by the School of Resources, Environment and Materials of Guangxi University, including sodium lauryl sulfate: 1 part, sodium dodecylbenzenesulfonate: 1.2 parts, and mix them evenly; the enhancer is methyl Glyceryl acrylate solution, the initiator is ammonium persulfate.

[0063] 2) Add all the demineralized water, sodium carbonate and soybean protein powder into the reaction kettle equipped with a stirrer, thermometer and condensing device, and stir evenly;

[0064] 3) Heating to 68° C. and keeping the temperature for 5 hours to obtain a mixture.

[0065] 4) The mixture is cooled to room temperature to obtain a uniform soy protein mucus.

[0066] 5) Add an emulsifier to the soy protein mucus and stir evenly to make it emulsify.

[0067] 6) Continue to add the enhancer and initiator to it, and stir evenly.

[0068] 7) Heating to 35°C, kee...

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Abstract

The invention provides a soybean protein adhesive for plywood. The soybean protein adhesive is prepared from the following components in parts by weight: 70-80 parts of a dispersing medium, 20-35 parts of defatted soybean protein powder, 0.5-2 parts of a denaturant, 1-2 parts of an emulsifier, 1-5 parts of an enhancer and 0.02-0.1 part of an initiator. According to the invention, all the components of the adhesive have a good synergistic effect. The defatted soybean protein powder is subjected to denaturation treatment by adopting sodium carbonate or sodium hydroxide, and glycidyl methacrylateis used as a reinforcing agent, so that the problem that a common soybean protein adhesive is poor in water resistance and complex in process is solved, the water-resistant use requirements of an adhesive for plywood can be met, and practical performance of the soybean protein adhesive is guaranteed. In addition, plywood prepared by the adhesive provided by the invention meets the requirement oftype-II plywood in the national standard. Moreover, the invention also provides a preparation method of the adhesive for soybean protein plywood. The method is simple in process, is convenient to operate and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and relates to an adhesive and a preparation method thereof, in particular to a bean protein adhesive used for preparing plywood and a preparation method thereof. Background technique [0002] The development of wood adhesives is an important symbol that affects the wood processing industry and measures the level of technological development of the wood industry. my country's artificial afforestation, fast-growing forest, economic forest, and commercial forest all occupy a place in the world, which greatly increases the demand for wood in the wood processing industry, promotes the development of my country's wood processing industry, and further promotes the demand for wood adhesives. [0003] At present, the adhesives commonly used in the production of wood industry are formaldehyde-based synthetic resins, mainly urea-formaldehyde resins and their modified products. Although after years...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/06C08F289/00C08F220/32
CPCC08F220/32C08F289/00C08K5/41C08K5/42C09J11/06C09J189/00
Inventor 秦志永冯小琼张一甫高伟李宁廖木荣
Owner GUANGXI UNIV
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