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Environment-friendly adhesive as well as preparation method and application thereof

An adhesive and environmentally friendly technology, applied in the direction of protein waste adhesives, etc., to achieve the effects of mild production conditions, improved utilization rate and economic value, and a wide range of raw material sources

Inactive Publication Date: 2014-03-12
郝飞麟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the disadvantages of the prior art that the source of adhesive material is limited, the production cost is high, and harmful substances such as formaldehyde are easily released during production or use. Provide an environmentally friendly adhesive, the environmentally friendly adhesive is prepared from silkworm cocoon waste sericin and other leftovers

Method used

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  • Environment-friendly adhesive as well as preparation method and application thereof

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Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of environment-friendly adhesive, described method comprises the following steps:

[0035] (1) Fix an ultrafiltration membrane with a pore size of 1 μm on the upper part of the container, take 30L silkworm cocoon waste sericin liquid and gravity filter it for 12 hours, stir the upper part, and collect the slightly viscous liquid on the upper part of the filter membrane, which is the sericin concentrate;

[0036] (2) Put the above sericin concentrate into a beaker, put it into a constant temperature water bath, and keep stirring during the period. The temperature of the constant temperature water bath is set at 85°C. After about 30 minutes, the sericin concentrate begins to appear tiny bubbles, continue to stir 10min, obtain nearly brown liquid, be the sericin concentrated solution after the modified treatment;

[0037] (3) Transfer the modified sericin concentrate into a rotary evaporator, and evaporate and concentrate under normal pressure ...

Embodiment 2

[0040] (1) Fix a filter membrane with a pore size of 0.8 μm on the upper part of the container, take 30L silkworm cocoon waste sericin liquid, filter it under a pressure of 0.05Mpa for 8 hours, stir the upper part, and collect the slightly viscous liquid on the upper part of the filter membrane, which is sericin Concentrate;

[0041] (2) Put the above sericin concentrate into a beaker, put it into a constant temperature water bath, set the temperature of the constant temperature water bath to 60°C, add urea granules (agricultural fertilizer) in an amount of 1mol / L, stir and dissolve, about 1 Hours later, crystallization began to occur in the solution, which was the modified sericin concentrate;

[0042] (3) Transfer the modified sericin concentrate into a rotary evaporator, evaporate and concentrate under reduced pressure at a vacuum of -0.07Mpa and a temperature of 60°C until the modified sericin concentrate becomes viscous , but can flow, collect viscous liquid, cool to roo...

Embodiment 3

[0045] (1) Fix a filter membrane with a pore size of 0.8 μm on the upper part of the container, take 30L silkworm cocoon waste sericin liquid, filter it under a pressure of 0.05Mpa for 8 hours, stir the upper part, and collect the slightly viscous liquid on the upper part of the filter membrane, which is sericin Concentrate;

[0046] (2) Put the above-mentioned sericin concentrate into a beaker, put it into a constant temperature water bath, set the temperature of the constant temperature water bath to 60°C, add urea granules (agricultural fertilizer) in an amount of 3mol / L, stir and dissolve, about 1 Hours later, crystallization began to occur in the solution, which was the modified sericin concentrate;

[0047] (3) Transfer the modified sericin concentrate into a rotary evaporator, evaporate and concentrate under reduced pressure at a vacuum degree of -0.05Mpa and a temperature of 70°C until the modified sericin concentrate becomes viscous , but can flow, collect viscous liqu...

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Abstract

The invention belongs to the technical field of adhesive production, and particularly relates to an environment-friendly adhesive and a method for preparing the environment-friendly adhesive by using silkworm cocoon waste silk glue. The preparation method of the environment-friendly adhesive comprises the following steps: (1) collecting wastewater generated after boiling silkworm cocoons, cooling to room temperature, then filtering by using an ultrafiltration membrane, and recovering a trapped liquid so as to obtain a silk glue concentrated solution, or concentrating by 10-12 times in vacuum or at normal pressure under the condition of lower than 80 DEG C so as to obtain a silk glue concentrated solution; (2) carrying out modified treatment on the silk glue concentrated solution obtained in the step (1) so as to obtain the silk glue concentrated solution subjected to modified treatment; and (3) concentrating the silk glue concentrated solution subjected to modified treatment at a normal pressure or in vacuum under the condition of lower than or equal to 80 DEG C so as to obtain a sticky flowable material which is the environment-friendly adhesive. The environment-friendly adhesive prepared by the method can be widely applied to wood industries or plant fiber molding industries, is safe and environment-friendly and does not release harmful substances such as formaldehyde which are harmful to human bodies in a using process.

Description

technical field [0001] The invention belongs to the technical field of adhesive production, and in particular relates to an environmentally friendly adhesive and a method for preparing the environmentally friendly adhesive by using silkworm cocoon waste sericin, and also relates to the application of the environmentally friendly adhesive. Background technique [0002] At present, my country's cocoon and silk production scale ranks first in the world, with an annual output of about 500,000 tons of silkworm cocoons and more than 70,000 tons of raw silk, accounting for about 80% and 60% of the world's total production, and silk production accounts for about 45% of the world's total output. . However, there is a huge waste of resources in the post-processing of silkworm cocoons. In silkworm cooking, cocoon selection and raw silk processing, only about 0.8 kilograms of silkworm cocoons per kilogram can meet the quality requirements of silkworm cocoons on the car, and about 20% o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/04
Inventor 郝飞麟沈明卫许晓路雷超
Owner 郝飞麟
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