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A kind of method of mildew-proof modification of soybean-based adhesive

An adhesive and modified technology, applied in the direction of adhesives, adhesive types, protein adhesives, etc., can solve the problems of affecting storage period and use effect, poor emulsion stability, attenuation of anti-mold effect, etc., and achieve long-term anti-mold effect Stable, strong loss resistance, long storage period effect

Active Publication Date: 2021-12-17
HUNAN FUXIANG WOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies and applications on improving the anti-mold performance of bean gum. At present, anti-mold modification is mainly based on simple addition of anti-mold agents. Although the short-term effect is good, the long-term anti-mold effect decays significantly, and the loss resistance poor
[0003] Organic antifungal agents (2,2'-dihydroxy-5,5'-dichlorodiphenylmethane, diiodomethyl-p-methylphenyl sulfone, benzyl bromoacetate, etc.) are widely used antifungal agents, It has a wide spectrum, fast action, and good antibacterial and anti-mildew effects, but simply blended with bean gum, the stability of the emulsion is poor, and it is prone to stratification, etc., which affects its storage period and use effect

Method used

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  • A kind of method of mildew-proof modification of soybean-based adhesive

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Take 100g of ionized water, 1g of alkaline lignin, 0.5g of 2,2'-dihydroxy-5,5'-dichlorodiphenylmethane, 1g of formaldehyde, 0.1g of phenol, and Methyl ammonium bromide 0.5g; Make the lignin microspheres of load antifungal agent by above-mentioned technique;

[0025] (2) Dissolve 30g of soybean powder in 68g of water, add 2g of alkali for treatment, and obtain soybean gel emulsion;

[0026] (3) Add 30g of epoxy resin and 5g of curing agent to the bean glue emulsion, and stir evenly;

[0027] (4) Add 10 g of lignin microspheres loaded with antifungal agent prepared in step (1) to obtain a modified bean gum emulsion.

Embodiment 2

[0029] (1) Take 100g of ionized water, 2.5g of alkaline lignin, 0.5g of 2,2'-dihydroxy-5,5'-dichlorodiphenylmethane, 1.5g of formaldehyde, 2.5g of phenol, hexadecane Trimethyl ammonium bromide 2.5g; Obtain the lignin microsphere of load antifungal agent by above-mentioned technique;

[0030] (2) Dissolve 10g of soybean powder in 89.5g of water, add 0.5g of alkali for treatment, and obtain soybean gel emulsion;

[0031] (3) Add 10g of epoxy resin and 0.5g of curing agent to the bean glue emulsion, and stir evenly;

[0032] (4) Add 5 g of antifungal-loaded lignin microspheres prepared in step (1) to obtain a modified bean gum emulsion.

Embodiment 3

[0034] (1) Take 100g of ionized water, 5g of alkaline lignin, 5g of 2,2'-dihydroxy-5,5'-dichlorodiphenylmethane, 3g of formaldehyde, 5g of phenol, cetyltrimethyl Ammonium bromide 5g; Obtain the lignin microsphere of load antifungal agent by above-mentioned technique;

[0035] (2) Dissolve 15g of soybean flour in 84.5g of water, add 1g of alkali for treatment, and obtain soybean gel emulsion;

[0036] (3) Add 20g of epoxy resin and 2.5g of curing agent to the bean glue emulsion, and stir evenly;

[0037] (4) Add 1 g of antifungal agent-loaded lignin microspheres prepared in step (1) to obtain a modified bean gum emulsion.

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Abstract

The invention discloses a method for antifungal modification of soybean-based adhesives, which includes the following processes: (1) preparing lignin microspheres loaded with antifungal agents; (2) dissolving soybean powder in water to obtain bean glue emulsion; (3) ) Add epoxy resin and curing agent to the bean glue emulsion, and stir evenly; (4) Add the lignin microspheres loaded with antifungal agent prepared in step (1) to obtain a modified bean glue emulsion, that is, soybean-based adhesive antimold. The modification method of the invention can make the antifungal agent and bean gum emulsion coexist stably, have long storage period, stable long-term antimold effect and strong loss resistance.

Description

technical field [0001] The invention relates to a wood adhesive, in particular to a method for preparing a flame-retardant soybean-based adhesive, and belongs to the field of agricultural planting. Background technique [0002] As a bio-based wood adhesive, bean gum has a long history of application. However, due to its poor water resistance and mildew resistance, it was replaced by petrochemical polymer resins in the 1950s, mainly aldehyde-based resins. However, there is formaldehyde released in the production and application process of aldehyde-based resins, and reaching a certain concentration will cause great harm to human health. Therefore, in recent years, the improvement and application of bean gum has received widespread attention again. There are many studies on the water resistance enhancement of bean gum, and the effect is remarkable, and most of them can meet the application requirements of type II plywood. However, there are few studies and applications on imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J189/00C09J11/04C09J11/08
CPCC09J163/00C09J189/00C09J11/04C09J11/08C08L2205/03C08L89/00C08L61/14C08K9/12C08K5/136C08L63/00
Inventor 刘建新张建均周送平蒋新华
Owner HUNAN FUXIANG WOOD