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Composite nano-grade silk fiber product and method for preparing the same

A silk fiber and nano-scale technology, applied in fiber processing, cellulose/protein conjugated artificial filament, filament/thread forming, etc., can solve the problem of poor dimensional stability, difficult to meet the requirements of product performance and shape stability, Internal structure instability and other problems, to achieve the effect of improving dimensional stability, good dimensional stability, and improving microstructure

Active Publication Date: 2006-09-27
XINYUAN COCOON SILK GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the silk fibroin fiber non-woven fabric obtained by electrospinning purely with silk fibroin solution has an unstable internal structure and will shrink when exposed to water, and the shrinkage rate may even reach more than 50%. Therefore, its dimensional stability is poor and it is difficult to meet Requirements for product performance and morphological stability in actual use

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

[0024] (1) Dissolve silk fiber (silk after degumming) in calcium chloride / ethanol / water solution with a molar ratio of 1:2:8 at a temperature of 70-80°C, and then dialyze it in water for three to three After four days, the silk fibroin solution was obtained after filtration, and freeze-dried to form a film; the obtained silk fibroin film was dissolved in formic acid with a concentration of 88%, and filtered to obtain a regenerated silk fibroin solution with a weight percentage of 8%;

[0025] (2) Nylon 6 slices were dissolved in formic acid with a concentration of 88%, and filtered to obtain a nylon 6 solution with a weight percentage of 11%;

[0026] (3) Mix the solutions obtained in (1) and (2) uniformly at a ratio of 5:5 to obtain the desired spinning solution.

[0027] The above-mentioned spinning solution is electrospun under the conditions of a voltage of 18KV, a distance from the spinneret to the receiving screen (conductive metal mesh) of 15cm, a temperature of 25°C, a...

Embodiment 2

[0029] (1) Dissolve silk fiber (silk after degumming) in calcium chloride / ethanol / water solution with a molar ratio of 1:2:8 at a temperature of 75°C, then dialyze it in water for four days, filter Finally, the silk fibroin solution was obtained, and dried at 25°C to form a film; the obtained silk fibroin film was dissolved in formic acid with a concentration of 98%, and filtered to obtain a regenerated silk fibroin solution with a weight percentage of 12%;

[0030] (2) Nylon 6 slices are dissolved in formic acid with a concentration of 98%, and filtered to obtain a nylon 6 solution with a weight percentage of 15%;

[0031] (3) Mix the solutions obtained in (1) and (2) uniformly at a ratio of 7:3 to obtain the desired spinning solution.

[0032] The above-mentioned spinning solution is electrospun under the conditions of a voltage of 22KV, a distance from the spinneret to the receiving screen (conductive metal mesh) of 18cm, a temperature of 25°C, and a relative humidity of 60...

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Abstract

This invention discloses a composite and nanometer-grade silk fibre, which is non-woven fabric composed of nanometer-grade silk element and nylon 6 composite fiber. The diameter of composite fiber is 50-300 nanometers, the weight ratio of nanometer-grade silk element and nylon 6 is in the range of 9:1-1:9. Its method for preparation is following: first preparing spinning fluid, obtaining non-woven fabric with electrostatic spinning method, then doing final treatment. Wherein said preparation of spinning fluid comprises the following steps: (1) preparing silk fibre solution and drying it into flim; liquefying the silk element flim into formic acid to get actified silk fibre solution; (2) liquefying nylon 6 section into into formic acid; (3) mixing equably the solution obtained from (1) and (2) to get spinning fluid needed. The invention improves the microstructure of fibre with composite method and final treatment, and the product obtained, with good dimensional stability which satisy the demand of performance and morphological stability of product in application, can be used as biological and medical material, protective material and filtering material and so on.

Description

technical field [0001] The invention relates to a nonwoven fabric mainly composed of nanofibers and a preparation method thereof, in particular to a nanoscale fiber nonwoven fabric composed of regenerated silk fibers mixed with other materials and a preparation method thereof. Background technique [0002] In recent years, researchers at home and abroad have done a lot of research work on the regeneration, development and utilization of silk resources. Regenerated silk products have been widely used in biomedicine, cosmetics, food and other fields. Silk has a good affinity with the human body, and at the same time has a certain antibacterial effect. Aiming at this characteristic, people have done a lot of work in the research of using silk fibroin to prepare biomedical materials, and some achievements have been made, such as : Chinese invention patent CN1118518C discloses a kind of porous silk fibroin film and its preparation method, adopts regenerate...

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): D04H3/00D01F8/02D01D5/00D04H1/728
Inventor 潘志娟孙道权邱芯薇夏艳杰张林春
Owner XINYUAN COCOON SILK GROUP
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