Orientation electro-spinning nanometer fiber spinning method and device thereof

A technology for electrospinning nanofibers and nanofibers, which is applied in spinning machines, fiber processing, and continuously wound spinning machines, etc., can solve the problems of multi-yarn mechanical properties and evenness, low nanofiber orientation, and fiber waste. and other problems, to achieve the effect of convenient operation, inhibition of spinning instability, and good yarn continuity

CN103132194AInactive Publication Date: 2013-06-05杨恩龙 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-06-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an orientation electro-spinning nanometer fiber spinning method and a device thereof. A metal shower nozzle which exerts positive and negative high pressure is adopted to spin two strands of nanometer fibers with opposite charges, an electric field line of a spinning electric field, relative to a common spinning electric field, is straight, stability of spinning is effectively restrained, and the spinning nanometer fibers are straight. Two strands of the fibers surround the yarn tail and form a cone-shaped twisting trigonum on the upper portion of a metal twisting machine, and enable the nanometer fibers to be further oriented and twisted to form yarn through electric field force, tractive force of the yarn and acting force of the metal twisting force. The spinning nanometer fiber yarn is conducted heat shaping through a heat processing device under certain tensile force, degree of orientation of the nanometer fibers along the axial direction of the yarn, breaking force and yarn levelness are further improved, and the yarn after shaped is collected by a winding bobbin. The device can achieve the aim that orientation nanometer fiber yarn can be continuously prepared, is simple in device, convenient to operate, and good in resultant yarn continuity, yarn breaking strength and yarn levelness, and not only can spin pure nanometer fiber yarn, but also can spin nanometer fibers / filament core composite yarn. The orientation nanometer fiber spinning method and the device thereof have important application value in the fields, such as a biomedical field and a sensor field.
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Description

technical field

[0001] The invention belongs to the field of textiles, and relates to an orientation electrospun nanofiber spinning method and a preparation device thereof. Background technique

[0002] Electrospinning is a popular spinning technique for preparing nanofibers in recent years. The diameter of electrospun nanofibers is 100-1000 times smaller than that of traditional spinning fibers, and has a huge specific surface area. It has broad application prospects in filter materials, wound dressing materials, nanocomposites, sensors, and biomedical materials. Since the diameter of the electrospun fiber is close to the size of the natural extracellular matrix biomacromolecular material, its extremely high specific surface area also provides an ideal platform for the effective release of active factors. Therefore, the use of electrospun nanofibers as tissue engineering scaffolds, anti-adhesion films, wound repair materials, artificial blood vessels, etc. is particularly ...

Examples

Embodiment 1

[0022] The polyvinyl alcohol (PVA) aqueous solution that adopts mass percent concentration to be 10% is spinning solution, extrudes from metal shower nozzle 8 by raw material delivery pump 7 with the speed of 1ml / h, on two metal shower nozzles 8 of opposite configuration respectively by The high-voltage generator 12 applies 8kV positive and negative high-voltage electricity, and the metal nozzles are 30mm long, 0.5mm in diameter, and 150mm apart. Under the action of a high-voltage electrostatic field, the spinning solution is drawn and thinned through stable and unstable stages to form nanofibers 6, and is collected toward the side of the metal twister 9 close to the nozzle 8. The core filament 10 is a 100dtex polylactic acid (PLA) filament, which is unwound from the filament bobbin 13, passes through the center of the metal twister 9 through the yarn guide hook 11. Metal twister 9 rotating speed 20rpm, filament 10 line speed 5m / h. Two strands of nanofibers 6 with positive an...

Embodiment 2

[0024] Polyester (PET) chips are used as the spinning raw material, melted at a temperature of 340°C, and the melt is extruded from the metal nozzle 8 through the raw material delivery pump 7 at a speed of 5ml / h, and is respectively placed on the eight metal nozzles 8 that are oppositely arranged. 18kV positive and negative high-voltage electricity is applied by the high-voltage generator 12. The length of the metal nozzle is 35mm, the diameter is 0.7mm, and the distance is 180mm. Under the action of a high-voltage electrostatic field, the polymer melt is drawn and thinned through stable and unstable stages to form nanofibers 6, which are collected toward the side of the metal twister 9 close to the nozzle 8. The core yarn 10 is a 92dtex polyester (PET) filament, which is unwound from the filament bobbin 13, passes through the center of the metal twister 9 through the yarn guide hook 11. Metal twister 9 rotating speed 80rpm, core wire 10 line speed 20m / h. Two strands of nanof...