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Strengthening-toughening modification type nano monofilament silk fiber and preparation method thereof

A silk fiber, strengthening and toughening technology, applied in the field of strengthening and toughening modified monofilament nano silk fiber and its preparation, can solve the problems such as the rarity of monofilament nano silk fiber, and achieve the promotion of uniform performance, beneficial regeneration and stable performance Effect

Active Publication Date: 2016-06-22
JIANGXI TIANQIN SILK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, research on monofilament nanosilk fibers based on strengthening and toughening is still very rare

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) The cocoons are degummed and washed to remove excess sericin on the surface of the silk, dried, placed in a lithium bromide solution to dissolve completely, and then subjected to dialysis, high-speed centrifugation and concentration to obtain silk with a molecular weight of 125-200KDa and a mass fraction of 18%. protein solution.

[0030] (2) After fully mixing the titanium precursor solution with ethanol, mixing with ethanol aqueous solution, stirring and reacting, and then concentrating to obtain a titanium dioxide sol with a particle diameter of 50-70 nm and a mass fraction of 25%.

[0031] (3) In percentage terms, add 0.8% titanium dioxide sol to 80% silk protein solution, stir well and then add 0.3% graphene oxide solution, then add the remaining PVP polymer thickener to obtain spinning liquid.

[0032] (4) Put the spinning liquid in the syringe of electrospinning, the receiver is a rotating rod, the adjustment voltage is 10KV, the distance is 15cm and the rot...

Embodiment 2

[0035] (1) The silk waste is degummed and washed to remove excess sericin on the surface of the silk, dried, placed in a lithium bromide solution to dissolve completely, and then subjected to dialysis, high-speed centrifugation and concentration to obtain a molecular weight of 125-200KDa and a mass fraction of 20%. silk protein solution.

[0036] (2) After fully mixing the titanium precursor solution with ethanol, mixing with ethanol aqueous solution, stirring and reacting, and then concentrating to obtain a titanium dioxide sol with a particle diameter of 80-100 nm and a mass fraction of 22%.

[0037] (3) By percentage, add 1.2% titanium dioxide sol into 85% silk protein solution, stir well and then add 0.4% graphene oxide solution, then add the remaining 5mol / L calcium chloride solution to thicken agent to obtain spinning solution.

[0038](4) Put the spinning liquid in the syringe of electrospinning, the receiver is a rotating rod, the adjustment voltage is 15KV, the dista...

Embodiment 3

[0041] (1) Degumming and washing silkworm cocoons or spun silk waste to remove excess sericin on the surface of the silk, drying them, dissolving them completely in a lithium bromide solution, and then dialysis, high-speed centrifugation and concentration to obtain a product with a molecular weight of 125-200KDa and a mass fraction of 16% silk protein solution.

[0042] (2) After fully mixing the titanium precursor solution with ethanol, mixing with ethanol aqueous solution, stirring and reacting, and then concentrating to obtain a titanium dioxide sol with a particle diameter of 60-80 nm and a mass fraction of 21%.

[0043] (3) By percentage, add 0.9% titanium dioxide sol to 82% silk protein solution, stir well and then add 0.35% graphene oxide solution, then add the remaining 5mol / L calcium chloride solution to thicken agent to obtain spinning solution.

[0044] (4) Put the spinning liquid in the syringe of electrospinning, the receiver is a rotating rod, the regulating vol...

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Abstract

The invention provides a strengthening-toughening modification type nano monofilament silk fiber and a preparation method thereof. The strengthening-toughening modification type nano monofilament silk fiber comprises 0.3-0.4% of oxidized graphene, 0.8-1.2% of nano-titanium dioxide particles, 80-85% of fibroin and the balance other substances. The preparation method particularly includes adding titanium dioxide sol into a fibroin solution with stirring sufficiently, and adding an oxidized graphene solution and a thickener sequentially so as to obtain a spinning solution; disposing the spinning solution into an electrostatic spinning injector and regulating voltage, distance and rotating speed of a receiver which is a rotary sticklike object so as to obtain a primary nano monofilament silk fiber; soaking the primary nano monofilament silk fiber into aqueous ethanol for pre-crystallization, and performing thermal treatment so as to obtain the nano monofilament silk fiber. The preparation method is simple, the nano monofilament silk fiber can be obtained by the rotary sticklike receiver through the electrostatic spinning technology, and the strengthening-toughening modification type nano monofilament silk fiber can be obtained by addition of the nano-particles and the oxidized graphene into the fibroin.

Description

Technical field: [0001] The invention belongs to the technical field of textile materials, and in particular relates to a strengthening and toughening modified monofilament nano silk fiber and a preparation method thereof. Background technique: [0002] Nanofibers refer to fibers with a diameter of less than 100nm, and sub-nanometer fibers refer to fibers with a diameter of no more than 800nm. The electrical, thermal and mechanical properties of these two fibers are very different from those of ordinary fibers, and can be used in high-performance filtration. Cloth, medical protective equipment and military equipment, etc. The conventional direct spinning method cannot produce sub-nanometer or nano-scale fibers. Generally, two immiscible polymers are blended and spun by electrospinning, but its products are limited to the production of short-fiber nonwovens. The mechanical strength and tensile elasticity are not ideal, and they are mostly used in non-woven products. The prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F4/00D01F1/10
CPCD01F1/10D01F4/00
Inventor 魏天堂
Owner JIANGXI TIANQIN SILK CO LTD
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