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Tough soybean protein-based adhesive, preparation method and application thereof

A technology of soybean protein and soybean protein isolate, which is applied in the field of tough soybean protein-based adhesives and its preparation, can solve the problems of high brittleness, poor water resistance, and low bonding strength, and achieve improved toughness, high bonding strength, and reduced The effect of dosage

Active Publication Date: 2021-09-07
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a soybean protein-based adhesive, which can effectively improve the problems of conventional biomass adhesives such as low bonding strength, poor water resistance, and high brittleness; another object of the present invention To provide the preparation method and application of the soybean protein-based adhesive

Method used

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  • Tough soybean protein-based adhesive, preparation method and application thereof
  • Tough soybean protein-based adhesive, preparation method and application thereof
  • Tough soybean protein-based adhesive, preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0051] The preparation method of involved glycidylamine comprises the steps:

[0052] (1) Place epichlorohydrin, ammonia water, diethylenetriamine and 1,2,4,5-benzenetetraaldehyde in a molar ratio of 5:1:0.2:0.1 in a three-neck equipped with a condenser and agitator In the flask, stir evenly at 600rpm, add ammonium trifluoride, first react at 23°C for 48h, and then react at 35°C for 3h;

[0053] (2) Vacuum distillation is used to remove epichlorohydrin and ammonium hydroxide in the product after the reaction to obtain a colorless syrup with a branched structure; adding excessive concentration to the colorless syrup is 50% sodium hydroxide The solution was reacted at 20°C for 2 hours. Since the reaction was exothermic, an external ice water cooling circulator was equipped to maintain the temperature; after the reaction was completed, sodium chloride was removed by filtration, and the filtrate was vacuum distilled to obtain glycidylamine.

[0054] The preparation method of invo...

Embodiment 1

[0059] The present embodiment provides a soybean protein-based adhesive, comprising the following components by weight:

[0060]

[0061] This embodiment also provides the preparation method of the above-mentioned soybean protein-based adhesive, which specifically includes the following steps:

[0062] (1) Add soybean protein isolate to tap water, and stir at room temperature and 800 rpm for 10 minutes to obtain a homogeneous soybean protein adhesive system;

[0063] (2) Add a cross-linking agent to the soybean protein adhesive system, stir at room temperature and 600rpm for 10min (so that the cross-linking agent is uniformly dispersed in the system), add epoxidized natural rubber hybrid material, and Stir at 600rpm for 10min (so that the epoxidized natural rubber hybrid material is uniformly dispersed in the system), and it is ready.

Embodiment 2

[0065] The present embodiment provides a soybean protein-based adhesive, comprising the following components by weight:

[0066]

[0067]

[0068] The preparation method of the soybean protein-based adhesive provided in this example is the same as that in Example 1.

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Abstract

The invention relates to the field of plywood preparation, in particular to a tough soybean protein-based adhesive, a preparation method and application thereof. The soybean protein-based adhesive comprises the following components in parts by weight: 10-20 parts of a main agent, 2-4 parts of a cross-linking agent and 2-3 parts of an epoxidized natural rubber hybrid material, wherein the main agent is soybean protein isolate, and the cross-linking agent is glycidyl amine. The soybean protein-based adhesive is high in bonding strength, good in water resistance, small in brittleness and good in toughness, can meet the water resistance and process requirements of plywood on the adhesive, and is low in cost, and the practical performance of the soybean protein-based adhesive is guaranteed.

Description

technical field [0001] The invention relates to the field of plywood preparation, in particular to a tough soybean protein-based adhesive and a preparation method and application thereof. Background technique [0002] In recent years, precious wood resources are relatively scarce, and artificial forest resources are abundant. Using artificial forest fast-growing wood through adhesives to prepare wood-based panels is the main raw material for furniture floors and interior decoration in the living environment. At present, urea-formaldehyde resin and its modified products are mostly used as adhesives. This type of adhesive is widely used in the wood industry due to its advantages of sufficient raw materials, low price, and good water solubility. However, there is a problem of formaldehyde release in urea-formaldehyde resin adhesive products. With the improvement of people's living standards, the pollution of human settlements has attracted attention. In the prior art, biomass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/06C09J11/08B27D1/08C07D303/36C07D301/00C07D301/26
CPCC09J189/00C09J11/06C09J11/08B27D1/08C07D303/36C07D301/00C07D301/26C08L15/00C08K5/29
Inventor 高强李建章徐艳涛韩宇飞李京超龚珊珊
Owner BEIJING FORESTRY UNIVERSITY
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