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A preparation method for improving tussah silk fiber strength

A technology of fiber strength and tussah silk is applied in the field of preparation of improving the strength of tussah silk fibers, and can solve the problems of easily destroying the structure of tussah silk fibers, affecting the mechanical strength of silk fibers, changing the silk structure, etc., so as to improve the mechanical properties and breaking strength. , the effect of improving the degree of cross-linking

Active Publication Date: 2022-01-04
HENAN MINXING COCOON SILK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the degumming process of tussah silk, it is easy to cause changes in the silk structure, thereby reducing the mechanical properties. The existing method to improve the fiber strength of tussah silk is to crush and dissolve the tussah silk, and then mix it with other solution materials for spinning to obtain silk Fiber, first crush and dissolve tussah silk, which will easily destroy the existing fiber structure of tussah silk and affect the mechanical strength of silk fiber

Method used

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  • A preparation method for improving tussah silk fiber strength

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Embodiment 1

[0018] A preparation method for improving tussah silk fiber strength, comprising the following steps:

[0019] (1) Add 0.3 parts by weight of sodium alginate to 100 parts by weight of water, and perform ultrasonic crushing. The temperature of the water is 80-90°C, the ultrasonic frequency of ultrasonic crushing is 20-25KHz, and the time is 20-30min to obtain alginic acid Sodium aqueous solution;

[0020] (2) Wash the degummed and bleached tussah silk with water, freeze at -4°C for 5 hours, and then vacuum-dry;

[0021] (3) soak the tussah silk treated in step (2) into the sodium alginate aqueous solution in step (1), keep the solution temperature at 70° C., stir for 40-50 min, and the tussah silk has 7 parts by weight;

[0022] (4) Put the tussah silk sodium alginate aqueous solution obtained in step (3) into a sealed tank, raise the pressure to 0.8MPa, and raise the temperature to 90°C, keep the high temperature and high pressure treatment for 30s, then remove the high press...

Embodiment 2

[0025] A preparation method for improving tussah silk fiber strength, comprising the following steps:

[0026] (1) Add 0.5 parts by weight of sodium alginate to 100 parts by weight of water, and perform ultrasonic crushing. The temperature of the water is 80-90°C, the ultrasonic frequency of ultrasonic crushing is 20-25KHz, and the time is 20-30min to obtain alginic acid Sodium aqueous solution;

[0027] (2) Wash the degummed and bleached tussah silk with water, freeze at -4°C for 5 hours, and then vacuum-dry;

[0028] (3) soak the tussah silk treated in step (2) into the sodium alginate aqueous solution in step (1), keep the solution temperature at 75° C., stir for 40-50 min, and the tussah silk has 7 parts by weight;

[0029] (4) Put the tussah silk sodium alginate aqueous solution obtained in step (3) into a sealed tank, raise the pressure to 0.8MPa, and raise the temperature to 95°C, keep the high temperature and high pressure treatment for 50s, then remove the high press...

Embodiment 3

[0032] A preparation method for improving tussah silk fiber strength, comprising the following steps:

[0033] (1) Add 0.6 parts by weight of sodium alginate to 100 parts by weight of water, and perform ultrasonic crushing. The temperature of the water is 80-90°C, the ultrasonic frequency of ultrasonic crushing is 20-25KHz, and the time is 20-30min to obtain alginic acid Sodium aqueous solution;

[0034] (2) Wash the degummed and bleached tussah silk with water, freeze at -4°C for 5 hours, and then vacuum-dry;

[0035] (3) soak the tussah silk treated in step (2) into the sodium alginate aqueous solution in step (1), keep the solution temperature at 80°C, stir for 40-50min, and the tussah silk has 8 parts by weight;

[0036] (4) Put the tussah silk sodium alginate aqueous solution obtained in step (3) into a sealed tank, raise the pressure to 0.9MPa, and raise the temperature to 95°C, keep the high temperature and high pressure treatment for 70s, then remove the high pressure...

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Abstract

The invention proposes a preparation method for improving the strength of tussah silk fibers, comprising the following steps: (1) adding sodium alginate into water, and performing ultrasonic crushing to obtain an aqueous solution of sodium alginate; (2) degumming and bleaching tussah silk After washing with water, freeze and vacuum-dry; (3) soak the tussah silk treated in step (2) into the sodium alginate aqueous solution in step (1), keep the solution temperature at 70-90°C, and stir for 40-50min; ( 4) Put the tussah silk sodium alginate aqueous solution obtained in step (3) into a sealed tank, raise the pressure to 0.8‑1.0MPa, raise the temperature to 90‑100°C, keep the high temperature and high pressure treatment for 30s‑90s, and then remove the high pressure , washed with water; (5) putting the tussah silk treated in step (4) into an aqueous solution containing a cross-linking agent, soaking, then taking out the tussah silk, freezing and thawing it several times, and finally drying it. The invention retains the original fiber structure of the tussah silk, and at the same time significantly improves the breaking strength of the tussah silk.

Description

technical field [0001] The invention relates to the technical field of tussah silk processing, in particular to a preparation method for improving the strength of tussah silk fibers. Background technique [0002] During the degumming process of tussah silk, it is easy to cause changes in the silk structure, thereby reducing the mechanical properties. The existing method to improve the fiber strength of tussah silk is to crush and dissolve the tussah silk, and then mix it with other solution materials for spinning to obtain silk Fiber, the tussah silk is pulverized and dissolved first, which will easily destroy the existing fiber structure of the tussah silk and affect the mechanical strength of the silk fiber. [0003] CN102011212B discloses a method for preparing tussah silk cellulose fibers. The tussah silk is degummed and crushed and added to an ionic liquid, and treated with microwaves to obtain a tussah silk ionic liquid solution, and then the same pulverized cellulose ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/13D06M11/155D06B3/02D06M101/12
CPCD06M15/13D06M11/155D06B3/02D06M2101/12
Inventor 王志强卢福堂尚蕾张慧华魏会丽徐斌卢瑶姬海莉
Owner HENAN MINXING COCOON SILK