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Method for preparing solid adhesive

A kind of adhesive and solid technology, applied in the direction of adhesive additives, adhesive types, starch-derived adhesives, etc., can solve the problems of complex production process, weak viscosity, high pollution, etc., and achieve long storage period, Strong adhesion, no organic solvent effect

Inactive Publication Date: 2014-01-08
朱小军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The stickiness and ingredients of the adhesive determine its scope of use. Most of the existing adhesives contain organic solvents. The production process is complex, polluting, and the stickiness is weak, which cannot meet the needs of some hard cartons. Requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A preparation method of a solid adhesive, the steps of which are as follows: first, under alkaline conditions, the mixture of corn starch and glutinous rice starch mixed with a mass ratio of 3:2 is oxidized with sodium hypochlorite to obtain oxidized starch; then Weigh 25 parts of oxidized starch, add 50 parts of water to the oxidized starch to prepare the oxidized starch into a slurry, then add 5 parts of 25% sodium hydroxide solution to the slurry under constant stirring, stir for 2 minutes and then stand still; wait until the slurry is completely After gelatinization, continue to add 4 parts of 10% boric acid solution, then add an appropriate amount of water to dilute to a suitable viscosity, stir evenly, and let stand for 5 minutes to obtain an oily yellow translucent adhesive.

Embodiment 2

[0011] A preparation method of a solid adhesive, the steps of which are as follows: first, under alkaline conditions, the mixture of corn starch and glutinous rice starch mixed with a mass ratio of 3:2 is oxidized with sodium hypochlorite to obtain oxidized starch; then Weigh 30 parts of oxidized starch, add 60 parts of water to the oxidized starch to adjust the oxidized starch into a slurry, then add 8 parts of 25% sodium hydroxide solution to the slurry under constant stirring, and stand still after stirring for 2 minutes; wait until the slurry is completely After gelatinization, continue to add 6 parts of 10% boric acid solution, then add an appropriate amount of water to dilute to a suitable viscosity, stir evenly, and let stand for 10 minutes to obtain an oily yellow translucent adhesive.

Embodiment 3

[0013] A preparation method of a solid adhesive, the steps of which are as follows: first, under alkaline conditions, the mixture of corn starch and glutinous rice starch mixed with a mass ratio of 3:2 is oxidized with sodium hypochlorite to obtain oxidized starch; then Weigh 28 parts of oxidized starch, add 55 parts of water to the oxidized starch to adjust the oxidized starch into a slurry, then add 7 parts of 25% sodium hydroxide solution to the slurry under constant stirring, and stand still after stirring for 2 minutes; wait until the slurry is completely After gelatinization, continue to add 5 parts of 10% boric acid solution, then add an appropriate amount of water to dilute to a suitable viscosity, stir evenly, and let stand for 8 minutes to obtain an oily yellow translucent adhesive.

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PUM

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Abstract

The invention discloses a method for preparing a solid adhesive. The method is characterized by comprising the following steps: first, oxidizing a mixture of corn starch and waxy rice starch by sodium hypochlorite in an alkali condition to prepare oxidized starch; then, weighing 25-30 parts of oxidized starch, and adding 50-60 parts of water into the oxidized starch to prepare slurry; adding 5-8 parts of 25% sodium hydroxide solution into the slurry under constantly stirring, stirring for 2 minutes, and standing; finally, adding 4-6 parts of 10% boric acid solution after the slurry is completely gelatinized, adding proper water to dilute the slurry to a proper viscosity, uniformly stirring, and standing for 5-10 minutes to obtain the oily yellow translucent adhesive. The method has the advantages of simple process, convenience in operation, no organic solvent, safety and environmental friendliness; the prepared adhesive is strong in viscosity and long in storage period and is applicable to adhesion of various cartons.

Description

technical field [0001] The invention relates to a formula of an adhesive, in particular to a preparation method of a solid adhesive. Background technique [0002] The stickiness and ingredients of the adhesive determine its scope of use. Most of the existing adhesives contain organic solvents. The production process is complex, polluting, and the stickiness is weak, which cannot meet the needs of some hard cartons. Requirements. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a solid adhesive, which is simple and easy to operate, and has no organic solvent, is safe and environmentally friendly, and the prepared adhesive has strong adhesion and a long storage period, and is suitable for bonding various class carton. [0004] The object of the invention is achieved through the following technical solutions: [0005] A preparation method of a solid adhesive, the steps of which are as follows: first, under alkalin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J11/04C08B31/18
Inventor 朱小军
Owner 朱小军
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