A melt magnetic spinning device and a method for preparing micro-nano fibers using the device

A technology of micro-nano fiber and magnetic spinning, which is applied in fiber processing, textile and papermaking, filament/wire forming, etc. It can solve problems such as complex structure, breakdown of heating circuit, hidden safety hazards, etc., and achieve uniform diameter distribution and arrangement Orderly and reduce the effect of potential safety hazards

Active Publication Date: 2017-03-15
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a new type of magnetic spinning device with simple structure and safe operation, aiming at the shortcomings of the melt electrospinning device, such as the complex structure and the potential safety hazard caused by the breakdown of the high-voltage electrode and the heating circuit. Silk device, which uses alternating magnetic field force combined with stretching force to completely replace electric field force to stretch and spin polymer melt to prepare micro-nano fibers

Method used

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  • A melt magnetic spinning device and a method for preparing micro-nano fibers using the device
  • A melt magnetic spinning device and a method for preparing micro-nano fibers using the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1As shown, a melt magnetic spinning device includes a heatable feeding device that can control the feeding rate, a spinning nozzle 5, a nozzle driving mechanism and a spinning receiving device, and the feeding device is provided with a heating and melting polymer The heating part of the material, the spinning receiving device includes a horizontal collection disc 9, the center of the bottom of the collection disc 9 is connected to the output shaft of the brushless DC motor 10, and the brushless DC motor 10 is electrically connected to the power supply And the motor controller 11 that controls the motor speed, the upper surface of the collection disk 9 is symmetrically arranged with a plurality of vertical pillars with the central axis of the disk as the symmetrical axis, the vertical pillars are at least 3, and 1 of the vertical pillars It is a permanent magnet 7, and the rest are metal fine needles 8. The spinning nozzle 5 is horizontally arranged, and t...

Embodiment 2

[0031] Use the melt magnetic spinning device of embodiment 1 to prepare the method for micronano fiber, comprise the following steps:

[0032] (1) Mixing of materials: Fe with a mass ratio of 43:57 3 o 4 The magnetic nanoparticles and polycaprolactone are fully stirred and mixed, and the Fe 3 o 4 The diameter of the magnetic nanoparticles is 20 nanometers, and the molecular weight of the polycaprolactone is 100,000;

[0033] (2) Preparation of micro-nano fibers: the mixture obtained in step (1) is added from the hopper 2 into the single-screw extruder 1, and the single-screw extruder 1 is started. The single-screw diameter is 20 millimeters, and its aspect ratio is 25 , set the temperature of the feeding section to 80°C, the temperature of the plasticizing section to 85°C, the temperature of the homogenizing section to 90°C, and the screw speed to 50 rpm. Magnetic nanoparticles and polymers are heated in three stages Melted into a magnetic fluid spinning solution, mixed un...

Embodiment 3

[0035] Use the melt magnetic spinning device of embodiment 1 to prepare the method for micronano fiber, comprise the following steps:

[0036] (1) Material mixing: Fe with a mass ratio of 3:7 3 o 4 The magnetic nanoparticles and ethylene-vinyl acetate copolymer are fully stirred and mixed, and the Fe 3 o 4 The diameter of the magnetic nanoparticles is 20 nanometers, and the molecular weight of the ethylene-vinyl acetate copolymer is 2000;

[0037] (2) Preparation of micro-nano fibers: the mixture obtained in step (1) is added from the hopper 2 into the single-screw extruder 1, and the single-screw extruder 1 is started. The single-screw diameter is 20 millimeters, and its aspect ratio is 25 , set the temperature in the feeding section to 110°C, the temperature in the plasticizing section to 115°C, the temperature in the homogenizing section to 120°C, and the screw speed to 60 rpm. Magnetic nanoparticles and polymers are heated in three stages Melted into a magnetic fluid s...

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Abstract

The invention discloses a melt magnetic spinning device and a method for preparing micro-nano fibers by using the device. The device includes a heating feeding device with a controllable feeding rate, a spinning nozzle, a nozzle driving mechanism and a spinning receiving device , the spinning receiving device includes a horizontal collection disk, the center of the bottom of the collection disk is connected with the output shaft of the DC brushless motor for linkage, and the upper surface of the collection disk is symmetrically arranged with a plurality of vertical shafts with the central axis of the disk as the symmetrical axis. One of the vertical pillars is a permanent magnet, and the rest are metal needles. The spinning nozzle is arranged horizontally, and the injection port of the spinning nozzle points to the permanent magnet of the spinning receiving device. The connection of the spinning nozzle can drive its The nozzle drive mechanism that reciprocates in the vertical direction. The device does not need high-voltage action during use, effectively reduces production costs and potential safety hazards, and the prepared fibers are arranged in an orderly manner, with high output and suitable for large-scale production, and the obtained micro-nano fibers have good application prospects.

Description

technical field [0001] The invention belongs to the new technology field of nanofiber preparation, and in particular relates to a novel melt magnetic spinning device which completely replaces electric field force by alternating magnetic field force and stretching force, and a method for preparing micro-nano fiber by using the device. Background technique [0002] Compared with traditional nanomaterials, one-dimensional nanomaterials (such as nanowires, nanorods, nanotubes, etc.) have huge specific surface area, large length / diameter ratio, and different electric, magnetic, force, Physical and chemical properties such as heat and light have broad applications in many fields such as nanoelectronic devices, air filtration, sensors, and biomedicine. With the continuous development of the application technology of nanofiber materials in various fields, the preparation technology of nanofiber materials has also been further developed and researched. At present, the preparation te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D01D13/00
Inventor 龙云泽董瑞华闫旭段晓鹏犹明浩王乐张丽华魏代善管殿柱
Owner QINGDAO UNIV
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