Preparation method of soybean protein based wood adhesive

A wood adhesive and soybean protein technology, which is applied in the direction of adhesives, adhesive types, grafted polymer adhesives, etc., can solve the problems of limited improvement of water resistance and bonding strength of soybean protein adhesives, and difficulty in meeting high-quality wood adhesives. , to achieve good environmental and economic benefits, improve water resistance, and stable performance

Inactive Publication Date: 2018-05-18
ANHUI BEIMA TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, this method has limited improvement in the water resistance and bonding strength of soybean protein adhesives, and it is difficult to meet the requirements of high-quality wood adhesives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A preparation method of soybean protein-based wood adhesive, comprising the following steps:

[0016] (1) Add 4 parts by weight of soybean protein and 1 part by weight of polyvinyl alcohol into 80 parts by weight of water, then adjust the pH to 9.5 with aqueous sodium hydroxide solution, stir at 80°C for 1 hour, cool down, and adjust the pH to 6 to obtain soybean protein - polyvinyl alcohol solution;

[0017] (2) Add 1 part by weight of microcrystalline cellulose to 20-40 parts by weight of sodium periodate solution for oxidation reaction at 30°C in the dark for 2 hours, wash the obtained oxidized microcrystalline cellulose with water, and then add 20 parts by weight of sulfurous acid Sodium hydrogen solution was sulfonated at 60°C for 2 hours, washed with water again, added 80 parts by weight of the soybean protein-polyvinyl alcohol solution described in step (1) to disperse evenly, stirred at 85°C for 1 hour, and then added 1 part by weight of styrene and 0.01 parts ...

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Abstract

The invention discloses a preparation method of a soybean protein based wood adhesive. The method includes: firstly adding sodium periodate, sodium bisulfite oxidation-sulfonation modified microcrystalline cellulose into a soybean protein-polyvinyl alcohol solution for grafting modification to obtain a sulfonated microcrystalline cellulose-soybean protein-polyvinyl alcohol compound solution, thenadding styrene and carrying out solution polymerization reaction to obtain an adhesive stock solution, and subjecting the adhesive stock solution and borax to mixing and crosslinking to obtain a soybean protein based wood adhesive. The wood adhesive prepared by the method provided by the invention has a dense network structure, high bonding strength, good moisture resistance and waterproofness, and stable performance, also in low in cost, green and environment-friendly, and has good environmental and economic benefits.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a preparation method of a soybean protein-based wood adhesive. Background technique [0002] With the development of the economy and the improvement of people's living standards, the demand for wood adhesives is increasing. The current wood adhesive is mainly "trialdehyde glue", which will release formaldehyde and phenolic harmful substances during production, transportation and use, which is not conducive to people's health and environmental protection requirements. Soybean-based wood adhesives have the advantages of wide sources, low price, renewable, and environmental protection, and have gradually become a hot spot that people pay attention to. However, traditional soybean protein glue has defects such as low bonding strength and poor water resistance, which is not conducive to practical application and promotion. CN101812282A discloses a preparation method of a water-res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/00C09J11/04C09J11/06C09J11/08C08F291/12C08F212/08C08B15/02C08B5/14C08F2/04
CPCC09J151/00C08B5/14C08B15/02C08F2/04C08F251/02C08F289/00C08K2003/387C09J11/04C09J11/06C09J11/08C08L51/02C08K3/38C08K5/47C08F212/08
Inventor 陈篯孙维乐
Owner ANHUI BEIMA TECH CO LTD
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