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Preparation method of swelled natural silk fiber material

A technology of natural silk and fiber materials, used in fiber processing, animal fibers, textiles and paper making, etc., can solve the problems of low swelling rate, product quality impact, long swelling time, etc., to achieve no bubbles, shorten swelling time, structure tight effect

Inactive Publication Date: 2018-11-27
苏州先蚕丝绸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing silk swelling method is mainly carried out under normal pressure, the swelling time is very long, the swelling rate is low, and the bubbles generated at the same time have an impact on the quality of the product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] S1: Configure a mixed solution of ether, hexanediol and water, the ratio of the three is 1:10:30;

[0021] S2: Add the natural silk fiber and the mixed solution into a vacuum mixer according to a solid-liquid ratio of 1:10, and stir for 3 minutes at a pressure of 0.03MPa;

[0022] S3: Subsequent supercritical fluid swelling treatment with supercritical carbon dioxide as a swelling agent; wherein the solid-to-liquid ratio of natural silk fiber to swelling agent is 1:8; the supercritical swelling pressure is 6MPa, and the supercritical swelling temperature is 55°C, The supercritical time is 10s, and the swollen silk fiber material can be obtained.

[0023] The swelling rate of the silk fiber material is increased by 40%, and the swelling time is shortened by 35%.

Embodiment 2

[0025] S1: Configure a mixed solution of ether, hexanediol and water, the ratio of the three is 1:15:50;

[0026] S2: Add the natural silk fiber and the mixed solution into a vacuum mixer according to a solid-liquid ratio of 1:20, and stir for 6 minutes at a pressure of 0.05 MPa;

[0027] S3: Subsequent supercritical fluid swelling treatment with supercritical carbon dioxide as a swelling agent; wherein the solid-to-liquid ratio of natural silk fiber to swelling agent is 1:12; the supercritical swelling pressure is 10MPa, and the supercritical swelling temperature is 75°C, The supercritical time is 15s, and the swollen silk fiber material can be obtained.

[0028] The swelling rate of the silk fiber material is increased by 48%, and the swelling time is shortened by 45%.

Embodiment 3

[0030] S1: Configure a mixed solution of ether, hexanediol and water, the ratio of the three is 1:12:35;

[0031] S2: Add the natural silk fiber and the mixed solution into a vacuum mixer according to a solid-liquid ratio of 1:12, and stir for 4 minutes at a pressure of 0.03MPa;

[0032] S3: Subsequent supercritical fluid swelling treatment with supercritical carbon dioxide as a swelling agent; wherein the solid-to-liquid ratio of natural silk fiber to swelling agent is 1:10; the supercritical swelling pressure is 7MPa, and the supercritical swelling temperature is 60℃, The supercritical time is 12s, and the swollen silk fiber material can be obtained.

[0033] The swelling rate of the silk fiber material is increased by 50%, and the swelling time is shortened by 48%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a preparation method of a swelled natural silk fiber material. The preparation method comprises the following steps: preparing a mixed solution of diethyl ether, hexanediol andwater in a proportion of 1 to (10-15) to (30-50); adding natural silk fibers and the mixed solution into a vacuum stirrer in a solid-liquid ratio of 1 to (10-20), and stirring at a pressure of 0.03MPa-0.05MPa for 3-6 minutes; and carrying out supercritical fluid swelling by taking supercritical carbon dioxide as a swelling agent, so as to obtain the swelled natural silk fiber material, wherein thesolid-liquid ratio of the natural silk fibers to the swelling agent is 1 to (8-12), the supercritical fluid swelling pressure is 6MPa-10MPa, the supercritical fluid swelling temperature is 55-75 DEGC, and the supercritical time is 10-15 seconds.

Description

Technical field [0001] The invention relates to the technical field of fiber material preparation, in particular to a method for preparing swollen natural silk fiber material. Background technique [0002] Silk fibroin fiber, also known as silk fiber, is a kind of natural polymer. It is a natural animal protein with good mechanical properties synthesized and secreted by the silk gland of silkworm. It is usually obtained by degumming the silk. Silk fibroin fiber is a protein composed of 20 kinds of amino acids that can be absorbed by organisms. In theory, silk fibroin fiber itself should be biocompatible, degradation products are non-toxic, no side effects, can be absorbed by the body, and have excellent mechanical properties . Therefore, silk fibroin fiber has received more and more attention in the medical field and material field. [0003] Swelling is a phenomenon in which the volume of a polymer expands in a solvent. When the polymer is dissolved, it must first undergo a proc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/10D06M13/165D06M13/148D06M23/00D06M101/10
CPCD06M13/148D06M13/165D06M23/00D06M23/10D06M2101/10
Inventor 孙文祥
Owner 苏州先蚕丝绸有限公司
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