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A microwave heating melt electrospinning device

A melt electrospinning and electrospinning technology, which is used in textiles and papermaking, filament/thread forming, melting of filament raw materials, etc. It can overcome the problems of difficult temperature control, good safety and low cost.

Inactive Publication Date: 2017-06-09
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art, aiming at the shortcomings of ordinary melt electrospinning devices, such as complicated structure, difficult control of heating temperature and spinning process, and difficulty in large-scale production, to seek to design a convenient, safe and efficient microwave Heated Melt Electrospinning Device

Method used

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  • A microwave heating melt electrospinning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Preparation of polyvinylidene fluoride (PVDF) nanofibers by microwave heating melt electrospinning device

[0019] In this embodiment, the PVDF powder is first added to the barrel 2, and the propulsion pump knob 6 is adjusted to set the parameters of the propulsion pump 1 to control the feeding propulsion rate, and the specific flow propulsion rate is displayed on the electronic display screen 15, and then the propulsion pump is turned on Switch 7 pushes the PVDF raw material into the material pipe 5 under the propulsion of the propulsion pump; adjusts the microwave frequency adjustment knob 8 in the microwave heating chamber 3, and selects a microwave frequency of 2.4 to 2.5 GHz for heating according to the spinning raw material PVDF, The heating time is set from 30 seconds to 2 minutes by the temperature knob 9, and the temperature is selected and adjusted by the temperature control knob 10. The set temperature is 205-235°C, which is 175°C higher than the me...

Embodiment 2

[0020] Example 2: Preparation of polyvinylidene fluoride / polyurethane (PVDF / PU) composite nanofibers by microwave heating melt electrospinning device

[0021] In this embodiment, the PVDF and PU powder with a mass ratio of 80:20 are mixed evenly, and then added to the material barrel 2, and the parameter setting of the propulsion pump 1 is adjusted by adjusting the flow rate knob 6 of the propulsion pump, and the propulsion rate of the feed is controlled. The specific flow propulsion rate is displayed on the display screen 15, the propulsion pump switch 7 is turned on, and the PVDF / PU raw material is pushed into the material pipe 5 under the propulsion of the propulsion pump; in the microwave heating chamber 3, the microwave frequency adjustment knob 8 is adjusted, According to the spinning raw material PVDF / PU, the microwave frequency is 2.4-2.5GHz for heating, the heating time is set by the temperature knob 9 to 30 seconds to 2 minutes, and the temperature is selected and adj...

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Abstract

The invention belongs to the technical field of melt electrostatic spinning equipment, and relates to a microwave heating melt electrostatic spinning device. A boost pump button, a boot pump switch and an electronic display screen are arranged on the front side face of a boost pump, and a charging barrel is fixedly mounted at the upper end of the boost pump. One end of the charging barrel is connected with a propeller, the other end of the charging barrel is connected with a material tube, and the material tube is arranged in a microwave heating cavity. The material tube penetrates through microwave heating cavity to be connected with a fusion nozzle, and a microwave frequency adjusting rotary knob, a heating time setting rotary knob and a temperature control rotary knob are arranged on the front side face of the microwave heating cavity. The positive electrode of a high-voltage power source is connected with the fusion nozzle, and the negative electrode of the high-voltage power source is connected with a collecting device which is vertically arranged. The distance between the fusion nozzle and the collecting device is 10-20 cm. A high-voltage power switch and a voltage adjusting rotary knob are arranged on the high-voltage power source. The microwave heating melt electrostatic spinning device is simple in structure, convenient to operate, safe to use, low in cost, high in spinning efficiency, high in automation degree, environmentally friendly, and beneficial to industrial large-scale nano-fiber preparation.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of melt electrostatic spinning equipment, and relates to a microwave heating melt electrostatic spinning device, which is used for large-scale preparation of micro-nano fibers. [0003] Background technique: [0004] Electrospinning is currently one of the simplest and most efficient methods for preparing polymer micro-nanofibers. It has attracted extensive attention and research at home and abroad for its advantages such as simple equipment, wide range of raw material sources, and low cost. The principle of electrospinning technology is very simple. During the electrospinning process, the polymer solution or melt forms a Taylor cone under the combined action of electric field force and surface tension. As the voltage increases, when the electrostatic force is greater than the droplet surface tension When the Taylor cone tip will eject a charged unstable jet, the jet will be stretched and thinned (whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D1/04D01D5/00
Inventor 龙云泽黄渊源董瑞华闫旭韩文鹏张君诚段晓鹏秦崇崇林大鹏
Owner QINGDAO UNIV