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Method for preparing modified maize starch glue

A technology of modified corn starch and corn starch, which is applied in the direction of starch-derived adhesives, adhesive types, non-polymer adhesive additives, etc., and can solve the problems of decreased bonding strength, poor water resistance and moisture resistance, and complex processes, etc. problem, to achieve the effect of good adhesion, fast drying and curing, and simple process

Inactive Publication Date: 2013-01-16
ZUNYI HEXIN PACKAGE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyvinyl acetate adhesives use vinyl acetate, polyvinyl alcohol, and dibutyl phthalate, all of which are petroleum products. They are non-renewable resources, and they need to be heated at 60-90 degrees during the production process. It has high requirements; its disadvantage is that it has poor water resistance and moisture resistance, and it is easy to absorb moisture in humid air. When used at high temperature, it will produce creep phenomenon and reduce the bonding strength; when stored below -5°C, it is easy to freeze and damage the emulsion.

Method used

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  • Method for preparing modified maize starch glue

Examples

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Effect test

Embodiment 1

[0014] A preparation method of denatured cornstarch glue, it comprises the steps:

[0015] 1. Take 85 Kg of cornstarch and add 9kg of oxidizing agent, after stirring evenly, seal it, and oxidize it for 10 hours. Add 6kg of quick-drying agent, stir evenly again, and cool down for 10 hours to obtain denatured cornstarch;

[0016] 2. After mixing 30kg of the prepared denatured cornstarch with 70kg of water, add 3kg of sodium hydroxide for gelatinization, then add 0.25kg of borax, stir again, and finally add 15 mg of defoamer. Stir evenly and put into barrels for use.

Embodiment 2

[0018] A preparation method of denatured cornstarch glue, it comprises the steps:

[0019] 1. Take 90 Kg of cornstarch and 11 kg of oxidizing agent first, stir evenly, seal it, and oxidize for 10 hours. Add 7kg of quick-drying agent, stir evenly again, and make denatured cornstarch after cooling for 10 hours;

[0020] 2. After mixing 35kg of the prepared denatured cornstarch with 73kg of water, add 4kg of sodium hydroxide for gelatinization, then add 0.30kg of borax, stir again, and finally add 17 mg of defoamer. Stir evenly and put into barrels for use.

Embodiment 3

[0022] A preparation method of denatured cornstarch glue, it comprises the steps:

[0023] 1. First take 95Kg cornstarch and 13kg oxidant, after stirring evenly, seal it, and oxidize it for 10 hours. Add 9kg of quick-drying agent, after stirring again, cool down for 10 hours to obtain denatured cornstarch;

[0024] 2. After mixing 40kg of the prepared denatured cornstarch with 80kg of water, add 5kg of sodium hydroxide for gelatinization, then add 0.35kg of borax, stir again, and finally add 20 mg of defoamer. Stir evenly and put into barrels for use.

[0025] Comparative Analysis Table of Modified Corn Starch Glue and Polyvinyl Acetate Adhesive.

[0026]

[0027] .

[0028] The applicant has continuously researched and improved the production process and materials in the production practice. Among them, the applicant has developed the modified cornstarch glue specially used for the honeycomb paperboard production line, which has made breakthrough progress, reduced produ...

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Abstract

The invention relates to a method for preparing a modified maize starch glue, comprising the following steps: (1) taking 85kg of maize starch, adding 9kg of oxidant, stirring uniformly, sealing, oxidizing for 10 hours, adding 6kg of quick-drying agent, stirring uniformly, and cooling for 10 hours to obtain the modified maize starch; and (2) adding 70kg of water, stirring uniformly, adding 3kg of sodium hydroxide, gelatinizing, adding 0.25kg of borax, stirring again, adding 15mg of defoaming agent, stirring uniformly, and barreling for use. The adopted maize starch is the environmentally-friendly product and the renewable energy. The modified maize starch glue is produced at the room temperature without heating, and the process for preparing the modified maize starch glue is easy. The materials adopted to produce the modified maize starch glue have good bonding strength, and the modified maize starch glue can be dried and cured quickly and is very suitable for producing honeycomb paperboards.

Description

[0001] A kind of preparation method of modified cornstarch glue technical field [0002] The invention relates to a preparation method of an adhesive, in particular to a preparation method of denatured corn starch glue. Background technique [0003] The existing honeycomb paperboard production industry all uses polyvinyl acetate adhesive according to the traditional production process. Polyvinyl acetate adhesives use vinyl acetate, polyvinyl alcohol, and dibutyl phthalate, all of which are petroleum products. They are non-renewable resources, and they need to be heated at 60-90 degrees during the production process. It has high requirements; its disadvantage is that it has poor water resistance and moisture resistance, and it is easy to absorb moisture in humid air. When used at high temperature, it will produce creep phenomenon and reduce the bonding strength; when stored below -5°C, it is easy to freeze and damage the emulsion. . Contents of the invention [0004] The ...

Claims

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Application Information

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IPC IPC(8): C09J103/10C09J11/04
Inventor 吴文杰
Owner ZUNYI HEXIN PACKAGE CO LTD
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