Oxidized starch adhesive and preparation method thereof

A technology of oxidized starch and adhesives, applied in the direction of starch-derived adhesives, adhesive types, polymer adhesive additives, etc., can solve problems such as poor fluidity, unstable quality of oxidized starch adhesives, and poor cohesive force. Achieve the effects of good fluidity, shortened oxidation time and low cost

Inactive Publication Date: 2015-08-26
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an oxidized starch adhesive to solve the problems of unstable quality, poor cohesive force and poor fluidity of existing oxidized starch adhesives

Method used

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  • Oxidized starch adhesive and preparation method thereof
  • Oxidized starch adhesive and preparation method thereof
  • Oxidized starch adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The oxidized starch adhesive of this embodiment is mainly made of the following raw materials in parts by weight: 100 parts of cornstarch, 3 parts of hydrogen peroxide with a mass concentration of 30%, and a concentration of 0.200 mol L -1 0.4 parts of potassium permanganate solution, 0.6 parts of copper sulfate, 10 parts of sodium hydroxide, 1 part of borax, 400 parts of water, and 0.1 part of tributyl phosphate.

[0026] The preparation method of the oxidized starch adhesive of the present embodiment may further comprise the steps:

[0027] 1) Oxidation: Add 400g of water to the reactor, heat up to 60°C, then slowly add 100g of cornstarch under stirring conditions to make starch paste; dissolve 0.6g of copper sulfate in hot water to make a 15% mass concentration Copper sulfate solution, add the copper sulfate solution into the starch paste, stir well, slowly add 3g of hydrogen peroxide with a mass concentration of 30%, and keep stirring for 30min to obtain mixture A; ...

Embodiment 2

[0032] The oxidized starch adhesive of this embodiment is mainly made of the following raw materials in parts by weight: 100 parts of potato starch, 4 parts of hydrogen peroxide with a mass concentration of 30%, and a concentration of 0.200 mol L -1 0.3 parts of potassium permanganate solution, 0.8 parts of copper sulfate, 11 parts of sodium hydroxide, 1.5 parts of borax, 400 parts of water, and 0.1 part of tributyl phosphate.

[0033] The preparation method of the oxidized starch adhesive of the present embodiment may further comprise the steps:

[0034] 1) Oxidation: Add 400g of water to the reactor, heat up to 65°C, then slowly add 100g of potato starch under stirring to make a starch paste; dissolve 0.8g of copper sulfate in hot water to make a 20% mass concentration Copper sulfate solution, add the copper sulfate solution into the starch paste, stir well, slowly add 4g of hydrogen peroxide with a mass concentration of 30%, and keep stirring for 30min to obtain mixture A; S...

Embodiment 3

[0039] The oxidized starch adhesive of this embodiment is mainly made of the following raw materials in parts by weight: 100 parts of potato starch, 4 parts of hydrogen peroxide with a mass concentration of 30%, and a concentration of 0.200 mol L -1 0.5 parts of potassium permanganate solution, 0.4 parts of copper sulfate, 11 parts of sodium hydroxide, 3 parts of borax, and 500 parts of water.

[0040] The preparation method of the oxidized starch adhesive of the present embodiment may further comprise the steps:

[0041] 1) Oxidation: Add 500g of water to the reactor, heat up to 60°C, then slowly add 100g of potato starch under stirring to make starch paste; dissolve 0.4g of copper sulfate in hot water to make a 18% mass concentration Copper sulfate solution, add the copper sulfate solution into the starch paste, stir well, slowly add 4g of hydrogen peroxide with a mass concentration of 30%, and keep stirring for 30min to obtain mixture A; Sodium hydroxide solution, after ad...

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Abstract

The invention discloses an oxidized starch adhesive and a preparation method thereof. The oxidized starch adhesive is mainly prepared from the raw materials of, by weight, 100 parts of starch, 3-5 parts of hydrogen peroxide, 0.1-0.5 parts of a potassium permanganate solution, 0.4-1 part of s catalyst, 9-11 parts of sodium hydroxide, 1-3 parts of a crosslinking agent, 300-500 parts of water, and 0-0.5 parts of a defoaming agent. According to the invention, hydrogen peroxide and the potassium permanganate solution are both used as oxidizing agents, and cooperates to provide a synergistic effect in carrying out oxidization treatment upon the starch material. The oxidization speed is high, and the dose of oxidizing agent is low. The obtained oxidized adhesive has the advantages of high bonding strength, good stability, good gelling resistance, long storage time, short drying time, good environment friendliness, and low cost. The adhesive is nontoxic and harmless, and can be widely applied in the fields of papermaking, trademark, textile, and the like.

Description

technical field [0001] The invention belongs to the technical field of starch adhesives, in particular relates to an oxidized starch adhesive, and also relates to a preparation method of the oxidized starch adhesive. Background technique [0002] Starch adhesive is highly valued by people in the industry due to its advantages of rich raw material sources, low cost, low investment, quick results, non-toxic and tasteless products, simple production process, and easy mechanized production. An important type of rubber that is indispensable to departments and daily life. Although starch can be used as an adhesive after being heated and gelatinized by adding water, its viscosity will be high even if the concentration or solid content is very low, which is unfavorable for processing and use, so their direct use as an adhesive is limited. [0003] Widely used starch-based adhesives are generally prepared by degradation conversion or chemical oxidation of starch. In the prior art, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J11/04C09J11/06C09J11/08C08B31/18
Inventor 任海波马先俊张艳花王宁全焕崔令霞徐文升
Owner HENAN UNIV OF URBAN CONSTR
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