Silk fiber used for non-woven fabric and preparation method of silk fiber

A technology of silk fibers and non-woven fabrics, applied in fiber processing, animal fibers, non-woven fabrics, etc., can solve problems such as stimulating biocompatibility, limiting fabric strength, stripping and stimulating skin, etc., to maintain biocompatibility, The effect of increasing the bending degree and improving the tear performance

Active Publication Date: 2018-05-18
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when silk is used as a raw material for processing spunlace pure silk non-woven fabrics, it is easy to cause disadvantages such as insufficient fabric strength and easy tearing of the fabric.
Therefore, researchers modify the fabric. The current methods are: (1) Improve the strength performance of the fabric by coating and impregnating a strong agent, but this will easily lead to a decrease in the breathability and moisture permeability of the fabric; (2) Through melting The method is to dissolve the sericin on the surface of the undegummed silk, and then dry it and use the sericin to bond the silk to each other to improve the strength of the cloth. However, the cloth obtained by this method has a relatively high hardness and poor softness; (3) through saturation The method of preparing curved silk with calcium salt can improve the bending degree of silk and increase the friction between silk, but the degree of bending of silk after this treatment is not enough, and the strength drops more, which limits the strength of cloth
(4) Non-woven fabrics are prepared by blending polyester, tencel and other fibers with silk. Although the strength of the fabric is improved, its practical value will be greatly reduced
[0004] Before the present invention was made, in the Chinese invention patent (CN100379915) "Silk denatured non-woven fabric containing sericin and its application", glutaraldehyde solution was used to fix sericin on silk fiber, and at the same time, surfactant was added to make it soft. , although it can improve the strength of silk non-woven fabrics, the melting and coagulation of sericin during the drying and cooling process will lead to poor hand feeling of the fabrics, and the added surfactants may dissolve and irritate the skin, and the added glutaraldehyde Toxic, causing irritation and loss of biocompatibility
The Chinese invention patent with the publication number CN105671790A provides a silk air-through non-woven fabric, which uses the melting and bonding effect of ES fibers with a melting point of 130°C to bond the silk non-woven fabric to each other to increase the strength. , but the high temperature will destroy the silk fiber, and the addition of chemical fiber ES fiber may reduce the skin affinity and biocompatibility of pure silk

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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  • Silk fiber used for non-woven fabric and preparation method of silk fiber
  • Silk fiber used for non-woven fabric and preparation method of silk fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Take 1 kg of degummed and dried silkworm silk, soak it in 5000 ml of 3.5 mol / L lithium bromide solution containing 20 grams of silk protective agent for 30 minutes, and absorb the solution at 25°C to obtain swollen silk; the silk protective agent contains 58 % mass of sodium sulfate, containing 35% mass of sucrose, containing 6% mass of glycerin, containing 1% mass of saccharin.

[0024] 2. Pass the swollen silk through a pressing roller to remove excess solution, and the pressure of the pressing roller is 0.2 MPa;

[0025] 3. Take out the pressed silk and wash it fully with water until the bromide ion in the eluate is detected by 0.01mol / l silver nitrate solution and there is no precipitation;

[0026] 4. Put the washed silk into an oven at 100°C and quickly dry it to constant weight to obtain silk with a certain degree of curvature, which can be used in the manufacture of silk non-woven fabrics.

[0027] Detection of bending degree: put the treated silk on the bla...

Embodiment 2

[0029] 1. Take 2 kg of degummed and dried silkworm silk, soak it in 10 liters of 5mol / L lithium bromide solution containing 40 grams of silk protective agent for 20 minutes, and absorb the solution to obtain swollen silk; the silk protective agent contains 45% Sodium sulfate by mass, containing 45% by mass of sucrose, containing 8% by mass of glycerin, containing 2% by mass of saccharin.

[0030] 2. Pass the swollen silk through a pressing roller to remove excess solution, and the pressure of the pressing roller is 0.25 MPa;

[0031] 3. Take out the pressed silk and wash it fully with water until the bromide ion in the eluate is detected by 0.01mol / l silver nitrate solution and there is no precipitation;

[0032] 4. Put the washed silk into an oven at 101°C and quickly dry it to constant weight to obtain silk with a certain degree of curvature, which can be used in the manufacture of silk non-woven fabrics.

[0033] Detection of bending degree: put the treated silk on the bla...

Embodiment 3

[0035] 1. Take 2 kg of degummed and dried silkworm silk, soak it in 10 liters of 6 mol / L lithium bromide solution containing 40 grams of silk protective agent for 10 minutes, and absorb the solution at 35°C to obtain swollen silk; the silk protective agent contains 42 % mass of sodium sulfate, containing 50% mass of sucrose, containing 7% mass of glycerin, containing 1% mass of saccharin.

[0036] 2. Pass the swollen silk through a pressing roller to remove excess solution, and the pressure of the pressing roller is 0.25 MPa;

[0037] 3. Take out the pressed silk and wash it fully with water until the bromide ion in the eluate is detected by 0.01mol / l silver nitrate solution and there is no precipitation;

[0038] 4. Put the washed silk into an oven at 101°C and quickly dry it to constant weight to obtain silk with a certain degree of curvature, which can be used in the manufacture of silk non-woven fabrics.

[0039] Detection of bending degree: put the treated silk on the bl...

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 discloses silk fiber used for a non-woven fabric and a preparation method of the silk fiber, and belongs to the technical field of nonwoven fabric materials. Pure natural mulberry silk is adopted, subjected to water-bath treatment by using a lithium bromide solution, then washed, and quickly dried, the stress in the silk is quickly changed, and modified silk with a certain degree ofbending is prepared. Compared with raw silk fiber, the bending degree of the modified silk fiber is greatly improved, strength is not significantly reduced, and the problems that through coating, blending, sericin bonding and other methods, the strength of cloth is improved unilaterally and the cloth is air permeable, moisture permeable and poor in softness can be solved. The modified silk fiber is excellent in performance, mild and free of stimulation, no other materials are introduced, the good performance of fibroin fiber can be give full play to and can serve as raw materials of a pure silk nonwoven fabric, the entanglement rate of silk in a spunlace silk nonwoven fabric is improved, the friction force in unit area is improved, and thus the strength of pure silk nonwoven fabric products is effectively improved.

Description

technical field [0001] The invention relates to a silk fiber used for nonwoven fabrics and a preparation method thereof, belonging to the technical field of nonwoven fabric materials. Background technique [0002] Silk is a natural protein fiber, containing 18 kinds of amino acids that are beneficial to the human body, and the protein content is more than 97%. Silk fibroin is the main body, and sericin is coated on the outside of silk fibroin to play a protective role. Silk fibroin is non-toxic, harmless, safe and reliable, has excellent biocompatibility, and is suitable for development and modification into new materials. Among them, the serine and threonine contained in it can delay aging, and the leucine can accelerate the metabolism of cells. These advantages of silk have led researchers to deepen their research on modified materials, such as impregnation, coating, grafting, blending, etc., to endow silk with different properties. [0003] At present, when silk is used...

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): D01F4/02D06M11/13D06M11/56D06M13/148D04H1/4266D06M101/10
CPCD01F4/02D04H1/4266D06M11/13D06M11/56D06M13/148D06M2101/10
Inventor 卢神州刘凯邢铁玲匡大江高晓培
Owner SUZHOU UNIV
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