High-bending silk as well as preparation method and application thereof

A silk and bending technology, applied in textiles and papermaking, fiber treatment, animal fibers, etc., can solve problems such as stimulating biocompatibility, limiting fabric strength, dissolution and stimulating skin, etc., to maintain biocompatibility and improve bending degree , Improve the effect of tearing performance

Active Publication Date: 2018-05-29
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • High-bending silk as well as preparation method and application thereof
  • High-bending silk as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present embodiment modifies silk, and its specific steps are:

[0025] 1. Take 100 grams of degummed and dried silkworm silk, soak it in 400 ml of 76 v / v% formic acid aqueous solution containing 2 grams of silk protective agent for 70 seconds at a temperature of 35°C, and absorb the solution to obtain swollen silk; the silk protective agent contains 58% by mass of sodium sulfate, contains 35% by mass of sucrose, contains 6% by mass of glycerin, contains 1% by mass of saccharin.

[0026] 2. Immediately press the swollen silk through a roller to remove excess formic acid aqueous solution, and the pressure of the roller is 0.2 MPa;

[0027] 3. Take out the pressed silk and wash it with water immediately until the pH value of the eluate rises above 6.5;

[0028] 4. Put the washed silk in 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.

[0029] Dete...

Embodiment 2

[0031] 1. Take 100 grams of degummed and dried silkworm silk, soak it in 400 ml of 83 v / v% formic acid aqueous solution containing 2 grams of silk protective agent for 30 seconds, and absorb the solution to obtain swollen silk; the silk protective agent contains 45% by mass of sodium sulfate, containing 45% by mass of sucrose, containing 8% by mass of glycerin, containing 2% by mass of saccharin.

[0032] 2. Rapidly pass the swollen silk through the pressing roller to remove excess formic acid aqueous solution, and the pressure of the pressing roller is 0.25 MPa;

[0033] 3. The silk that has been pressed by the pressure roller is quickly and fully washed with water until the pH value of the eluate rises above 6.2;

[0034] 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.

[0035] Detection of bending degree: put the treated silk...

Embodiment 3

[0037] 1. Take 200 grams of degummed and dried silkworm silk, soak it in 800 ml of 86 v / v% formic acid aqueous solution containing 4 grams of silk protective agent for 20 seconds, and absorb the solution at 28°C to obtain swollen silk; the silk protective agent is Contains 42% by mass of sodium sulfate, contains 50% by mass of sucrose, contains 7% by mass of glycerin, and contains 1% by mass of saccharin.

[0038] 2. Rapidly pass the swollen silk through the pressing roller to remove excess formic acid aqueous solution, and the pressure of the pressing roller is 0.25 MPa;

[0039] 3. The silk that has been pressed by the pressure roller is quickly and fully washed with water until the pH value of the eluate rises above 6.1;

[0040] 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.

[0041] Detection of bending degree: put the tre...

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 high-bending silk as well as a preparation method and application thereof and belongs to the technical field of spinning materials. The preparation method comprises the following steps: performing water-bath treatment on purely natural mulberry silk with a formic acid solution, washing, and further performing rapid baking drying to rapidly change stress inside the silk, thereby obtaining the high-bending modified silk. Compared with an original mulberry silk fiber, the modified silk material disclosed by the invention is greatly improved in bending degree, is not conspicuously reduced in strength, is excellent in performance, is mild and inirritative, is capable of sufficiently bringing high properties of mulberry silk fibers into play, and can be used as a raw material of a pure mulberry silk non-woven fabric, the entanglement rate of mulberry silk inside a hydroentangle mulberry silk non-woven fabric is increased, the friction of a unit area is increased, anddefects of strength of a conventional pure mulberry silk non-woven fabric product are effectively improved.

Description

technical field [0001] The invention relates to a modified silk, in particular to a highly curved silk, a preparation method and an application thereof, and belongs to the technical field of textile 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 ...

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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IPC IPC(8): D06M13/188D06M11/56D06M13/11D06M13/148D06M13/352D06M101/10
CPCD06M11/56D06M13/11D06M13/148D06M13/188D06M13/352D06M2101/10
Inventor 卢神州刘凯邢铁玲匡大江高晓培
Owner SUZHOU UNIV
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