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A kind of environment-friendly adhesive and its preparation method and application

An adhesive and environmentally friendly technology, applied in the direction of protein waste adhesives, etc., can solve the problems of limited source of adhesive raw materials, easy release of harmful substances such as formaldehyde, and high production costs, to improve the utilization rate and economic value, easy to use. The effect of industrial production and emission reduction

Inactive Publication Date: 2016-03-30
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of preparation method of environment-friendly adhesive, described method comprises the following steps:

[0032] (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;

[0033] (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;

[0034] (3) Transfer the modified sericin concentrate into a rotary evaporator, and evaporate and concentrate under normal pressure ...

Embodiment 2

[0037] (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;

[0038] (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;

[0039] (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

[0042](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;

[0043] (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;

[0044] (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 liq...

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Abstract

The invention belongs to the technical field of adhesive production, and specifically relates to an environmentally friendly adhesive and a method for preparing the environmentally friendly adhesive by using silkworm cocoon waste sericin. The preparation method of the environmentally friendly adhesive includes the following steps: (1) collecting After boiling the cocoon, the waste water is cooled to room temperature, then filtered with an ultrafiltration membrane, and the retentate is recovered to obtain a sericin concentrate, or concentrated 10-12 times under vacuum or normal pressure at a temperature lower than 80°C to obtain a sericin concentrate ; (2) modifying the sericin concentrate obtained in step (1) to obtain the modified sericin concentrate; (3) repurposing the sericin concentrate after the modification in step (2) Concentrate under normal pressure or vacuum at ≤80°C to obtain viscous flowable materials, which are environmentally friendly adhesive products. The environment-friendly adhesive prepared by the preparation method of the invention can be widely used in the wood industry and the plant fiber forming industry, is safe and environment-friendly, and will not release harmful substances such as formaldehyde harmful to human body during use.

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% of ...

Claims

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Application Information

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