Preparation method of liquid net glue adhesive

A technology of adhesives and net glues, applied in the preparation of animal glue or gelatin, adhesives, adhesive additives, etc., can solve the problems of unstable bond strength, easy to open glue at high temperature, and limited development, and achieve low freezing point, High temperature is not easy to open the glue, the effect of simple preparation process

Inactive Publication Date: 2016-10-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scientifically process the leftover net glue of software capsules, reuse resources, and broaden its application prospects. However, in practical applications, there are shortcomings such as high freezing point, unstable bond strength, and easy opening of glue at high temperatures, which hinders its development in various industries. limit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation method of liquid mesh adhesive of the present invention comprises the following steps:

[0016] Weigh methanol, net glue, distilled water, potassium thiocyanate, magnesium sulfate and sodium chloride, then add distilled water, potassium thiocyanate, magnesium sulfate and sodium chloride into a three-necked flask, and heat up to 40°C while stirring. Fully dissolve potassium thiocyanate, magnesium sulfate and sodium chloride, then add mesh glue, stir at a constant temperature and medium speed for 30 minutes at a temperature of 40°C, then add methanol, and then carry out stirring reaction for 30 minutes to obtain a liquid mesh glue adhesive .

[0017] The quality of distilled water is 25% of mesh glue quality, the quality of potassium thiocyanate is 16% of mesh glue quality, the quality of magnesium sulfate is 6% of mesh glue quality, the quality of sodium chloride is 15% of mesh glue quality; The quality of the net glue is 15% of the quality.

Embodiment 2

[0019] The preparation method of liquid mesh adhesive of the present invention comprises the following steps:

[0020] Weigh methanol, net glue, distilled water, potassium thiocyanate, magnesium sulfate and sodium chloride, then add distilled water, potassium thiocyanate, magnesium sulfate and sodium chloride into a three-necked flask, and heat up to 65°C while stirring. Fully dissolve potassium thiocyanate, magnesium sulfate and sodium chloride, then add mesh glue, stir at a constant temperature and medium speed for 60 minutes at a temperature of 65°C, then add methanol, and then carry out stirring reaction for 10 minutes to obtain a liquid mesh glue adhesive .

[0021] The quality of distilled water is 50% of mesh glue quality, the quality of potassium thiocyanate is 6% of mesh glue quality, the quality of magnesium sulfate is 25% of mesh glue quality, the quality of sodium chloride is 3% of mesh glue quality; The quality of the net glue is 40% of the quality.

Embodiment 3

[0023] The preparation method of liquid mesh adhesive of the present invention comprises the following steps:

[0024] Weigh methanol, net glue, distilled water, potassium thiocyanate, magnesium sulfate and sodium chloride, then add distilled water, potassium thiocyanate, magnesium sulfate and sodium chloride into a three-necked flask, and heat up to 50°C while stirring. Fully dissolve potassium thiocyanate, magnesium sulfate and sodium chloride, then add mesh glue, stir at a constant temperature and medium speed for 45 minutes at a temperature of 50°C, then add methanol, and then carry out stirring reaction for 20 minutes to obtain a liquid mesh glue adhesive .

[0025] The quality of distilled water is 35% of mesh glue quality, the quality of potassium thiocyanate is 10% of mesh glue quality, the quality of magnesium sulfate is 15% of mesh glue quality, the quality of sodium chloride is 10% of mesh glue quality; The quality is 30% of the net glue quality.

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PUM

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Abstract

The invention discloses a preparation method of a liquid net glue adhesive, comprising the following steps: weighing methanol, net glue, distilled water, potassium thiocyanate, magnesium sulfate and sodium chloride, and then mixing the distilled water, potassium thiocyanate, Add magnesium sulfate and sodium chloride into a three-necked flask, heat up while stirring to fully dissolve potassium thiocyanate, magnesium sulfate and sodium chloride, then add net glue, stir at constant temperature, then add methanol, and then carry out stirring reaction to obtain A liquid mesh adhesive. The liquid mesh adhesive prepared by the method has the characteristics of low freezing point, stable bonding strength, and high temperature and is not easy to open the glue.

Description

technical field [0001] The invention relates to a method for preparing an adhesive, in particular to a method for preparing a liquid web adhesive. Background technique [0002] When producing soft capsules, there is often a large amount of leftover net glue left, the main component of which is gelatin. As a very important natural polymer adhesive, gelatin is widely used in the packaging industry, sizing agent and chemical industry. Scientifically process the leftover net glue of software capsules, reuse resources, and broaden its application prospects. However, in practical applications, there are shortcomings such as high freezing point, unstable bond strength, and easy opening of glue at high temperatures, which hinders its development in various industries. limit. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcoming of prior art, provide a kind of preparation method of liquid net glue adhesive, the liqu...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J11/04C09J11/06
CPCC09J189/00C08K3/16C08K3/30C08K5/05C08K5/372C08K13/02C08K2003/3063C09J11/04
Inventor 苏秀霞崔明张婧郭雯张海宁杨晶晶张祎
Owner SHAANXI UNIV OF SCI & TECH
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