Microwave heating melt electrostatic spinning device

A melt electrospinning and electrospinning technology, applied in textiles and papermaking, filament/thread forming, filament raw material melting, etc., can solve the problem of difficult control of heating temperature and spinning process, complex structure, and difficulty in scale problems such as automated production, to achieve the effects of overcoming the difficulty of temperature control, good safety, and low cost

Inactive Publication Date: 2014-11-05
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 shortcomings of the prior art, aiming at the disadvantages of common 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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  • Microwave heating melt electrostatic spinning device

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Example 1: Preparation of Polyvinylidene Fluoride (PVDF) Nanofibers by Microwave Heating Melt Electrospinning Device

[0014] In this embodiment, PVDF powder is firstly added to the barrel 2, and the propelling pump knob 6 is adjusted to set the parameters of the propelling pump 1, the feeding propelling rate is controlled, the specific flow propelling rate is displayed on the electronic display screen 15, and then the propelling pump is turned on. Switch 7, under the propulsion action of the propulsion pump, push the PVDF raw material into the material pipe 5; adjust the microwave frequency adjustment knob 8 in the microwave heating chamber 3, and select the microwave frequency of 2.4-2.5GHz according to the spinning raw material PVDF for heating, The heating time is set by the temperature knob 9 to 30 seconds to 2 minutes, and the temperature is selected and controlled by the temperature control knob 10. The set temperature is 205-235°C, which is 175°C higher than the ...

Embodiment 2

[0015] Example 2: Preparation of polyvinylidene fluoride / polyurethane (PVDF / PU) composite nanofibers by microwave heating melt electrospinning device

[0016] In this example, PVDF and PU powder with a mass ratio of 80:20 are mixed uniformly, and then added to the barrel 2, and the flow knob 6 of the propelling pump is adjusted to set the parameters of the propelling pump 1, and the feeding propulsion rate is controlled. The display screen 15 displays the specific flow rate of advance, turn on the push pump switch 7, and push the PVDF / PU raw material into the material pipe 5 under the propulsion action of the push pump; in the microwave heating chamber 3, adjust the microwave frequency adjustment knob 8, According to the spinning raw material PVDF / PU, the microwave frequency is selected to be 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 controlled by the temperature control knob 10, and...

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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

Technical field: [0001] The invention belongs to the technical field of melt electrospinning equipment, and relates to a microwave heating melt electrospinning device for large-scale preparation of micro-nano fibers. Background technique: [0002] Electrospinning is one of the simplest and most efficient methods for preparing polymer micro-nanofibers. It has received extensive attention and research at home and abroad due to its advantages of simple device, wide source of raw materials, 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 surface tension of the droplet When , the tip of the Taylor cone will eject a charged unstable jet, and the jet will be stretched and refined (whiplash effect) or split and refined by the elec...

Claims

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Application Information

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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
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