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Preparation method of high stability adhesive

A high-stability, adhesive technology, applied in the direction of protein waste adhesives, etc., can solve the problems of bone glue easy to mildew, viscosity drop, loss of bonding performance, etc., to achieve neutrality, enhanced adhesion, and enhanced The effect of stability

Inactive Publication Date: 2005-05-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The viscosity of bone glue changes in a wide range with the change of temperature. As the temperature drops, the viscosity rises sharply. When the temperature is lower than 30°C, it basically loses its fluidity and becomes a gel state, thereby affecting the fluidity of the adhesive; In addition, the bone glue is easy to mildew, and the storage period is short. After the failure, the bone glue adhesive will delaminate, the viscosity will drop, and the bonding performance will be lost, making storage and transportation difficult.

Method used

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  • Preparation method of high stability adhesive

Examples

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Effect test

Embodiment 1

[0006] Example 1: first mix the bone glue and water in a mass ratio of 1:1, so that the bone glue is fully swollen to form a glue solution; when the water bath is at a constant temperature of 65°C, add 0.5 parts of 20% by mass concentration to every 100 parts of the glue solution NaOH, stir for 40 minutes; cool down to 50°C, slowly add 1.2 parts of epichlorohydrin dropwise to every 100 parts of the glue with NaOH added, and stir until the viscosity increases significantly; add 0.2 parts to every 100 parts of the glue Preservative sodium benzoate was added, and the pH value was adjusted to pH=8 with glacial acetic acid, and the reaction was continued for 25 minutes to obtain a yellow-brown viscous liquid.

Embodiment 2

[0007] Example 2: first mix the bone glue and water at a mass ratio of 1:1.3, so that the bone glue is fully swollen to form a glue; when the water bath is kept at a constant temperature of 58°C, add 1.5 parts of 20% of the mass percentage concentration to every 100 parts of the glue NaOH, stir for 36 minutes; cool down to 46°C, slowly add 1.1 parts of epichlorohydrin dropwise to every 100 parts of the above glue with NaOH added, stir until the viscosity increases significantly; add 0.1 parts to every 100 parts of the glue Preservative sodium benzoate was added, and the pH value was adjusted to pH=8 with glacial acetic acid, and the reaction was continued for 35 minutes to obtain a yellow-brown viscous liquid.

Embodiment 3

[0008] Example 3: first mix the bone glue with water at a mass ratio of 1:1.1, so that the bone glue is fully swollen to form a glue solution; when the temperature of the water bath is constant at 55°C, add 1.2 parts of 20% glucosinolate to every 100 parts of the glue solution NaOH, stir for 30 minutes; cool down to 40°C, slowly add 1.0 parts of epichlorohydrin dropwise to every 100 parts of the glue with NaOH added, stir until the viscosity increases significantly; add 0.1 parts to every 100 parts of the glue Preservative sodium benzoate was added, and the pH value was adjusted to pH=8 with glacial acetic acid, and the reaction was continued for 32 minutes to obtain a yellow-brown viscous liquid.

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Abstract

A high-stability adhesive is prepared through mixing bone glue with water for swelling, heating by constant-temp water bath, adding NaOH while stirring, cooling, slowly dropping epoxy chloropropane, stirring until its viscosity is obviously increased, adding sodium benzoate, using glacial acetic acid to regulate pH=8, and reaction.

Description

technical field [0001] The invention belongs to fine chemical products, in particular to a preparation method of a high-stability adhesive. Background technique [0002] The viscosity of bone glue changes in a wide range with the change of temperature. As the temperature drops, the viscosity rises sharply. When the temperature is lower than 30°C, it basically loses its fluidity and becomes a gel state, thereby affecting the fluidity of the adhesive; In addition, the bone glue is prone to mildew, and the storage period is short. The bone glue adhesive after failure is delaminated, the viscosity drops, and the bonding performance is lost, so storage and transportation are difficult. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the modified bone glue adhesive that is easy to mildew and the storage period is short, and provides a kind of advantage that not only retains the low freezing point of the original modified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/04
Inventor 李仲谨朱敏李小钡李小燕杨艳丽李华锋
Owner SHAANXI UNIV OF SCI & TECH
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