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High-strength composite nano fiber long yarn and manufacturing method thereof

A technology of composite nanofibers and nanofibers, applied in fiber processing, filament/thread forming, fabrics, etc., can solve the problems of ineffective deposition of guiding filaments, high strength, etc., and achieve excellent mechanical properties, high efficiency, and easy operation simple effect

Inactive Publication Date: 2007-09-12
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In U.S. Patent 6,106,913, Scardino F.L. et al deposited the electrospun fibers ejected from a spinneret onto the guide filaments, the nanofibers were wrapped around the filaments, and then pulled out together. The yarn has high strength and the load-bearing part is Guide filaments, but because the nanofibers carry the same charge and repel each other, they cannot be effectively deposited on the guide filaments

Method used

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  • High-strength composite nano fiber long yarn and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0020] Dissolve 1.0g of collagen in 5ml of hexafluoroisopropanol, use chitosan yarn as the core material, and deliver the solution to a pair of spinnerets that are placed opposite to each other at a distance of 20cm from the core material. The inner diameter of the spinnerets is 0.6mm. The distance between the pairs is 25cm, and the opposite polarity DC high voltage ±8kv is applied to the spinneret respectively, and the collagen solution at the top of the spinneret is stretched and whipped under the action of the electric field force to form charged collagen nanoparticles. Fibers, the collagen nanofibers ejected from the spinneret opposite to the nozzle have opposite charges, attract and collide with each other in the air, and deposit on the central core material chitosan yarn pulled forward at a speed of 5m / min, to obtain The long chitosan yarn coated with collagen nanofibers has a tensile strength of 0.56cN / dtex and an elongation at break of 37%.

Embodiment 2

[0022]Dissolve 1.5g of gelatin in 20ml of trifluoroethanol, then add 0.05g of ibuprofen, ultrasonically oscillate, take silk as the core material, and deliver the solution to three pairs of spinnerets that are placed opposite each other at a distance of 50cm from the core material, with an inner diameter of 0.6mm , the distance between the spinneret pairs is 25cm, and the opposite polarity DC high voltage ±10kv is applied to the spinnerets respectively, and the gelatin solution at the top of the spinnerets is stretched and whipped under the action of the electric field force to form a charged Gelatin-ibuprofen nanofibers, the gelatin-ibuprofen nanofibers ejected from the spinneret opposite to the nozzle have opposite charges, attract and collide with each other in the air, and deposit on the silk core that is pulled forward at a speed of 10m / min On the material, obtain the long silk yarn of surface coating gelatin (containing ibuprofen) nanofiber. After further treatment in a ...

Embodiment 3

[0024] Dissolve 1.0 g of dextran in 10 ml of trifluoroacetic acid, use poly-L-lactic acid fiber long yarn as the core material, and deliver the solution to a pair of spinnerets that are placed opposite to each other at a distance of 20 cm from the core material, and the distance between the spinneret pairs is 20 cm , with an inner diameter of 0.4mm, apply DC high voltage +10kv of opposite polarity to the spinneret respectively, and the dextran solution at the top of the spinneret will be stretched and whipped under the action of the electric field force to form charged dextran Nanofibers, the dextran nanofibers ejected from the spinneret opposite to the nozzle have opposite charges, attract and collide with each other in the air, and deposit on the poly-L-lactic acid fiber filaments that are pulled forward at a speed of 2m / min , to obtain the poly-L-lactic acid fiber long yarn coated with dextran nanofibers. After further treatment in a methanol coagulation bath, a long yarn w...

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Abstract

This invention relates to a high mightness compound nm fiber long yarn composed of a core and a cortex, in which, the core is macromolecular filament or long yarn and the cortex is bio-macromolecular nm fiber. The preparation method includes: taking macromolecular filament or long yarn as the leading silk of the core, putting a pair or multi-pair of spinnerets and enforcing DC high voltage with opposite polarities to the spinnerets with the spouts opposite, and the macromolecular solution at the top of the spinnerets is extended and whipped acted by the electric field force to form nm fiber with charges and the nm fibers ejected from the spinnerets carry opposite charges, so that they attract each other in the air to deposit on the core leading silk, and the core tracts forward to get high mightness macromolecular long yarn wrapped with nm fibers on the surface.

Description

technical field [0001] The invention relates to high-strength composite nanofiber long yarn and a preparation method thereof, belonging to the technical field of special fiber preparation. Background technique [0002] In today's pursuit of low cost and high benefit, processing methods with excellent material properties are particularly important, especially in the processing of composite, mixed or combined materials. The basic goal is to optimize the use of materials and complement performance. With the development of new structural spinning technology, sheath-core type, sandwich type, side-by-side type, island-in-the-sea type and other types of composite fibers began to appear. Sirofil, Sirospun, Solospun and other spinning technologies use parallel feeding or parallel splitting to twist and combine fibers. Although the two materials can be combined to form complementary performances, they cannot achieve disadvantages or defects. Masking or removal, since the two fibers a...

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): D01D5/34D01F1/10D03D15/00
Inventor 李新松姚琛宋唐英周明阳
Owner SOUTHEAST UNIV
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