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A kind of preparation method of soybean protein-based aldehyde-free adhesive

A technology of soybean protein and aldehyde adhesive, which is applied in the field of wood, can solve the problems of low bonding strength, high price, and poor water resistance, and achieve the effect of improving bonding effect, enhancing water resistance, and good adhesiveness

Active Publication Date: 2020-02-18
雪宝家居集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low bonding strength, poor water resistance and high price are the bottlenecks that limit the development of soybean protein adhesives. Therefore, it is urgent to improve the water resistance and bonding strength of soybean-based adhesives.

Method used

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  • A kind of preparation method of soybean protein-based aldehyde-free adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of soybean protein-based formaldehyde-free adhesive, the method comprises the following steps:

[0030] Step 1. Stir and mix 35 parts of acid-heat-treated soybean flour, 25 parts of epoxy resin and 30 parts of hydroquinone in parts by weight at 70°C to form a soybean protein-based premix;

[0031] Step 2. Disperse 2 parts of thiourea in 100 parts of soybean protein-based premix, control the reaction temperature to 40°C, and stir for 10 minutes;

[0032] Step 3. After stirring evenly, add 3 parts of sodium sulfite, continue stirring for 10 minutes, and ultrasonically treat to disperse evenly to obtain a modified dispersion;

[0033] Step 4. Add 5 parts of microcrystalline cellulose to the above-mentioned modified dispersion in turn, mix for 10 minutes, add 100 parts of modified soybean powder compound solution, and stir evenly for 30 minutes;

[0034] Step 5. After stirring evenly, add 0.3 parts of viscosifying agent sulfuric acid, keep warm for 25 ...

Embodiment 2

[0046] The difference from Example 1 is that 25 parts of acid-heat treated soybean flour, 25 parts of epoxy resin and 100 parts of modified soybean flour compound liquid; the rest of the preparation is the same as in Example 1.

Embodiment 3

[0048] The difference from Example 1 is that 45 parts of acid-heat-treated soybean powder, 25 parts of epoxy resin and 80 parts of modified soybean powder compound liquid, and the rest of the preparation is the same as in Example 1.

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Abstract

A method for preparing a soybean protein-based formaldehyde-free adhesive is disclosed. Soybean powder treated with acid and heat, modified soybean powder composite liquid, epoxy resin, hydroquinone,thiourea, sodium sulfite, microcrystalline cellulose, calcium bentonite, sulfuric acid, sodium dodecyl sulfate and sodium sulfite are adopted as main raw materials. The soybean protein-based formaldehyde-free adhesive and the method for preparing the same are provided. The adhesive prepared by the method is low in formaldehyde content, good in floor adhesion performance and excellent in water resistance and adhesive strength.

Description

technical field [0001] The invention relates to a preparation method of a soybean protein-based formaldehyde-free adhesive, which belongs to the technical field of wood. Background technique [0002] With the development of modern society, people's requirements for furniture are getting higher and higher. At present, environmental problems caused by coatings, flooring, automobile exhaust, and furniture production have attracted much attention. Coupled with the rampant smog, indoor decoration pollution and indoor air quality issues have attracted unprecedented attention. In 2015, more attention will be focused on the field of environmental protection, and of course there will be more green actions for environmental protection. The environmental protection of the furniture itself, such as the control of harmful substances and the environmental protection performance of the accessories used in the processing process, etc., will be put on the desks of high-end furniture brands....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C09J163/00C09J11/06C09J11/08C08H1/00
CPCC08H1/00C08L2205/03C09J11/06C09J11/08C09J189/00C08L63/00C08L1/04C08K5/13
Inventor 王迅赵明
Owner 雪宝家居集团有限公司