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Method for preparing corn inner skin natural adhesive

An inner skin and adhesive technology, applied in the direction of adhesive type, starch adhesive, glucan adhesive, etc., can solve the problems of restricting application effect and application range, low mechanical strength of serosa, film-forming property The problem of poor serosal film ductility and elasticity, good adhesion performance and strong film-forming ability can be achieved.

Inactive Publication Date: 2012-07-18
徐州众恒淀粉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the structural characteristics of starch itself, poor adhesion, poor film-forming ability, easy aging, low mechanical strength of the size film, high brittleness and easy peeling off, restricting its application effect and application range
[0003] During the production of corn starch, a large amount of by-products such as corn skin will be produced. Due to the lack of deep processing technology, this resource has been used only as an additive in the feed industry for a long time, resulting in a lot of waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of hot water gelatinized acetate corn inner skin adhesive

[0027] Crush 100 kg of corn inner skin to 300 mesh, soak and stir in 20% alkali solution for 6 hours, heat up to 50°C, add 15 liters of vinyl acetate dropwise under stirring conditions, keep stirring for 4-6 hours after the addition is completed , drop dilute hydrochloric acid to neutralize to a pH value of 7, dehydrate, wash, dry and pulverize to obtain hot water gelatinized acetate corn inner skin adhesive. The adhesive has a degree of acetate substitution (DS) of about 0.03.

Embodiment 2

[0029] Preparation of Cold Water Soluble Carboxymethyl Corn Inner Cuticle Adhesive

[0030] Crush 100 kg of corn inner epidermis to 300 mesh, soak and stir in 20% concentration lye for 6 hours, put it into 75% ethanol solution after dehydration, raise the temperature to 50°C, add 20% concentration lye dropwise under stirring condition, and at the same time Add 60 liters of monochloroacetic acid dropwise to keep the pH value of the material > 11. After the dropwise addition, keep it warm and stir for 4 hours, add dilute hydrochloric acid to neutralize until the pH value is 7, dehydrate, wash 3 times with 75% ethanol solution, dry and pulverize Finally, a cold water-soluble corn inner skin adhesive is obtained. The degree of carboxymethyl substitution (DS) of the adhesive is about 0.06.

Embodiment 3

[0032] For textile warp yarn sizing, prepare materials according to the following ratio

[0033] Modified Starch 8%

[0034] Corn inner skin binder 4%

[0035] Animal and vegetable emulsified oil 0.5%

[0036] water remaining.

[0037] Add about 550 liters of cold water into the mixing tank, turn on the high-speed stirring, put in 60 kg of modified starch, 30 kg of corn inner skin adhesive, and 3.75 kg of animal and plant emulsified oil in turn, stir for 15 minutes, and then steam for cooking. Stew the pulp for 30 minutes, add water to a fixed volume of 750 liters, boil again, and transfer the pulp to the sizing tank of the sizing machine through the pulp delivery pipeline to sizing the warp yarns. The resulting slurry had a solids content of about 12.5%.

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PUM

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Abstract

The invention discloses a method for preparing a corn inner skin natural adhesive, belonging to the technical field of adhesives. The method comprises the following step of: with corn inner skin as a raw material, carrying out ultramicro crushing on the corn inner skin to more than 300 meshes, soaking the ultramicro crushed corn inner skin in alkali liquid with the concentration of 10-20%, stirring for 6-24h to have quaternization, carrying out one or more chemical modification reactions of oxidation, carboxy methylation, acetylation or phosphate esterification and cationic etherification on the raw material with chemical reaction activity, and controlling substitution depth of the reactions to prepare natural adhesive products with different indexes and performances, which can be gelatinized in hot water and dissolved in cold water. The method for preparing the corn inner skin natural adhesive, disclosed by the invention, has the advantages that the prepared adhesive has good adhesiveness and strong filming capability, the slurry film has excellent ductility and smoothness, and the elasticity and the mechanical strength of the starch slurry film can be remarkably improved when the prepared adhesive and the modified starch are used together; the source of the raw material is wide, the raw material is low in cost, the additional value of the starch processing is further increased, and economic benefits of enterprises are increased.

Description

technical field [0001] The invention relates to a preparation method of a natural adhesive for corn inner epidermis, which belongs to the technical field of adhesives. technical background [0002] With the strengthening of people's awareness of environmental protection, the use of natural materials to make adhesives has become a trend, and more and more industries have begun to use starch or modified starch to replace the original chemical adhesives. However, due to the structural characteristics of starch itself, poor adhesion, poor film-forming ability, easy aging, low mechanical strength of the size film, high brittleness and easy peeling off, restrict its application effect and application range. [0003] During the production of corn starch, a large amount of by-products such as corn skin will be produced. Due to the lack of deep processing technology, this resource has been used only as an additive in the feed industry for a long time, causing a lot of waste. [0004...

Claims

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Application Information

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IPC IPC(8): C08B37/02D06M15/11D06M15/03C09J103/02C09J103/04C09J105/02C09D103/02C09D103/04C09D105/02
Inventor 丰亦军
Owner 徐州众恒淀粉科技有限公司
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