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

A corn gluten and adhesive technology, which is applied in the preparation of protein adhesives, animal glue or gelatin, and adhesives, etc., can solve problems such as blank production processes, and achieve the effects of promoting value-added utilization, wide sources and simple preparation processes.

Inactive Publication Date: 2009-12-02
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) Adjusting glue:

[0034] First, add 8.4L of water to each 47.6L of absolute ethanol to form an ethanol solution, and then add 24L of dichloromethane to the ethanol solution and mix evenly to obtain a modification reagent solution. Add 24kg of zein to the modification reagent solution with stirring at a speed of 20kg / h, and then stir with an electric mixer for 2 hours at room temperature to dissolve all the zein, and stir to obtain the modification. Corn gluten adhesive.

[0035] 2) Preparation of bamboo shavings:

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

[0037] 3) Sizing:

[0038] Weigh 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 with compressed air, and spray the ...

Embodiment 2

[0042] 1) Adjusting glue:

[0043] First, add 10.92 L of water per 61.88 L of absolute ethanol to prepare an ethanol solution, and then add 7.2 L of oleic acid to the ethanol solution and mix evenly to obtain a modification reagent solution. Add 24kg of zein to the modification reagent solution with stirring at a speed of 20kg / h, and then stir with an electric mixer for 2 hours at room temperature to dissolve all the zein, and stir to obtain the modification. Corn gluten adhesive.

[0044] 2) Preparation of bamboo shavings:

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

[0046] 3) Sizing:

[0047] Weigh 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 with compressed air, and spray the...

Embodiment 3

[0051] 1) Adjusting glue:

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

[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 with co...

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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 to obtain 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 free from 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 an adhesive and particleboard from modified corn gluten, in particular to a process for preparing an environment-friendly biological adhesive and a particleboard, belonging to the field of adhesives and artificial boards. Background technique [0002] Enterprises that use corn as raw materials for deep processing, such as factories that produce starch, starch sugar, organic acids, amino acids and other products, will produce a large amount of scraps. From these scraps, about 5% to 6% of the raw material mass can be separated out of corn gluten meal, the main protein of which is zein. Zein has a unique solubility, it is neither soluble in water nor soluble in anhydrous alcohols, but soluble 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 odor, and its nutritional va...

Claims

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Application Information

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