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Method for preparing modified corn protein adhesive and environment-friendly particle board

A technology of zein and adhesive, which is applied in the preparation process of environment-friendly bio-adhesives and particleboards, modified zein in the field of preparation of adhesives and particleboards, can solve problems such as blank production processes, and achieve value-added utilization, wide sources, and preparation The effect of simple process

Inactive Publication Date: 2011-04-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is almost no research on the production process of adhesives and particleboards prepared by modifying zein

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Glue adjustment:

[0034] First, add 8.4 L of water for every 47.6 L of absolute ethanol to form an ethanol solution, then add 24 L of dichloromethane into the ethanol solution and mix uniformly to obtain a modifying reagent solution. Add 24kg of zein to the modification reagent solution while stirring at a rate of 20kg / h, and then stir for 2 hours with an electric mixer at room temperature to dissolve all the zein, and then obtain the modification after stirring evenly Zein Glue.

[0035] 2) Preparation of bamboo shavings:

[0036] Naturally air-dried bamboo industry processing waste (moisture content 10.5%) is selected, sorted after crushing by a hammer mill, and impurities and dust are removed, and the particle size of the obtained bamboo shavings is controlled to be 2-5 mm.

[0037] 3) Sizing:

[0038] Take by weighing 156.4kg of bamboo shavings (the amount of dry matter is 140kg), put it into the rubber mixing drum, suspend the bamboo shavings in the drum wit...

Embodiment 2

[0042] 1) Glue adjustment:

[0043] First, add 10.92 L of water for every 61.88 L of absolute ethanol to form an ethanol solution, then add 7.2 L of oleic acid to the ethanol solution and mix uniformly to obtain a modification reagent solution. Add 24kg of zein to the modification reagent solution while stirring at a rate of 20kg / h, and then stir for 2 hours with an electric mixer at room temperature to dissolve all the zein, and then obtain the modification after stirring evenly Zein Glue.

[0044] 2) Preparation of bamboo shavings:

[0045] Naturally air-dried bamboo industry processing waste (moisture content 10.5%) is selected, sorted after crushing by a hammer mill, and impurities and dust are removed, and the particle size of the obtained bamboo shavings is controlled to be 2-5 mm.

[0046] 3) Sizing:

[0047] Take by weighing 145.3kg of bamboo shavings (the amount of dry matter is 130kg), put it into the rubber mixing drum, suspend the bamboo shavings in the drum wit...

Embodiment 3

[0051] 1) Glue adjustment:

[0052] First, add 10.8 L of water for every 61.2 L of absolute ethanol to form an ethanol solution, then add 8 L of glycerol to the ethanol solution and mix uniformly to obtain a modification reagent solution. Add 24kg of zein to the modification reagent solution while stirring at a rate of 20kg / h, and then stir for 2 hours with an electric mixer at room temperature to dissolve all the zein, and then obtain the modification after stirring evenly Zein Glue.

[0053]2) Preparation of bamboo shavings:

[0054] Naturally air-dried bamboo industry processing waste (moisture content 10.5%) is selected, sorted after being pulverized by a hammer mill, and impurities and dust are removed, and the particle size of the obtained bamboo shavings is controlled to be 2 to 5 mm.

[0055] 3) Sizing:

[0056] Take by weighing 156.4kg of bamboo shavings (the amount of dry matter is 140kg), put it into the rubber mixing drum, suspend the bamboo shavings in the drum...

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Abstract

The invention relates to the field of adhesives and artificial boards, and aims to provide a process for preparing an environment-friendly biological adhesive and a particle board. The process comprises the following steps: adding corn protein to solution of modified reagent to make the mass concentration of the corn protein between 0.2 and 0.4 kg / L, and stirring the mixed solution for 1 to 2h toobtain the modified corn protein adhesive. The method for preparing the particle board comprises the following working procedures of preparation of wood shavings, sizing treatment, water content adjustment and hot compression. By using the modified corn protein adhesive, the process of producing the particle board is odorless, non-toxic and clean; the particle board prepared by the method is freefrom releasing free formaldehyde, and can be easily biologically degraded after being wasted, so that the particle board meets the requirements on the environmental protection, and is an environment-friendly product; the used corn protein is sourced form the residue obtained after the starch is processed by a wet method, so that the corn protein is easily bought and regenerated, and can promote the value-added utilization of the corn protein and the resource utilization of the forestry processing residue; and the preparation process is simple, and the physical mechanical property of the particle board is similar to that of the formaldehyde-type adhesive.

Description

technical field [0001] The invention relates to a process for preparing adhesives and particle boards from modified zein, in particular to an environment-friendly bio-adhesive and a process for preparing particle boards, and belongs to the field of adhesives and wood-based panels. Background technique [0002] Enterprises that use corn as raw material for deep processing, such as factories that produce starch, starch sugar, organic acids, amino acids and other products, will produce a large amount of leftovers. Among these leftovers, about 5% to 6% of the mass of raw materials can be separated from corn gluten powder, and its main protein is zein. Zein has a unique solubility. It is neither soluble in water nor in absolute alcohol, but can be dissolved in 60% to 95% aqueous alcohol solution. Because zein is insoluble in water and lacks essential amino acids such as lysine and tryptophan, it also has a series of problems such as color and smell, and its nutritional value is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27L11/02B27N3/08B27N3/02B27N1/00C09J189/00B27N1/02
Inventor 盛奎川常蕊王会沈莹莹崔翔钱湘群
Owner ZHEJIANG UNIV