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A gas-induced electrospinning device

A gas and electrospinning technology, which is applied in textiles and papermaking, fiber processing, filament/thread forming, etc., can solve problems such as high starting voltage, easy clogging, and large diameter difference, so as to reduce the starting voltage threshold and increase fiber output Effect

Inactive Publication Date: 2015-12-23
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The literature "Multiple jets in electrospinning: experiment and modeling" reported a batch electrospinning technology with a combined multi-needle nozzle array. This technology improves production efficiency to a certain extent, but there are problems such as easy clogging and large diameter differences.
[0003] Chinese patent CN101010550A discloses an electric field disturbance type tipless batch electrospinning technology, which uses a metal cylindrical roller instead of a needle point, and covers a layer of polymer solution on the surface of the roller. Jet flow, but this method has problems such as high starting voltage, regular cleaning and poor fiber uniformity

Method used

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  • A gas-induced electrospinning device
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  • A gas-induced electrospinning device

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Experimental program
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Effect test

Embodiment 1

[0021] see Figure 1~5 As shown, the present invention is provided with a high-voltage power supply 1, a solution tank 2, a gas pipeline 3, a liquid supply device 4, a fiber collecting device 5 and a pneumatic system 6. Gas pipeline 3 is mainly composed of three-way joint 3-1, four-way joint 3-2, five-way joint 3-3, six-way joint 3-4, 1# gas pipeline 3-5, 2# gas pipeline 3-6, 3 # Composition of gas pipeline 3-7 and so on. Pneumatic system 6 is mainly composed of air source, pneumatic triple parts (air filter, pressure reducing valve and lubricator), one-way throttle valve, remote control solenoid valve and so on. The remote solenoid valve is used to control the on-off and on-off time ratio of high-pressure gas to realize pulse high pressure. The high-voltage power supply 1 is used to provide a high-voltage electric field, its positive pole is connected to the solution tank 2, its negative pole is connected to the fiber collection device 5 and grounded; the gas pipeline 3 is ...

Embodiment 2

[0025] see Figure 6-9 , the gas pipeline 3 structural form described in embodiment 1 becomes as follows Figure 6-8 As shown in the structure, the direction of the nozzle array is changed to be inclined downward, the structure of the nozzle can be slender nozzle or circular nozzle, the height of the polymer solution liquid level from the gas pipeline is changed to 1-5cm, and the rest of the structure remains unchanged. exist Figure 7 , mark P is the liquid level position, in Figure 8 , mark G is high-pressure gas.

[0026] When the solution tank 2 was relatively small, the gas pipeline 3 could adopt such as Figure 9 Shown is the gas splitter nozzle M instead.

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Abstract

The invention discloses a gas induced electrospinning device, which relates to an electrostatic spinning device. The device is provided with a high-voltage power supply, a solution groove, a gas pipeline, a liquid supply device, a fiber collection device and a pneumatic system; wherein the high-voltage power supply is used for providing a high-voltage electric field, the anode of the high-voltage power supply is connected with the solution groove, the cathode of the high-voltage power supply is connected with the fiber collection device and is connected with the ground; the gas pipeline is arranged in the solution groove and is connected with an output port of the pneumatic system, and a plurality of spray opening arrays are uniformly and densely distributed on the surface of the gas pipeline for spraying impulse high-pressure gas to induce a liquid surface to generate local bulges; an output end of the liquid supply device is connected with the solution groove for supplying solution in real time so as to enable the liquid surface to be maintained in a constant height all the time; the fiber collection device is arranged above the solution groove for collecting nano fibers; and the pneumatic system is used for controlling the output of the impulse high-pressure gas. By the adoption of the gas induced electrospinning device, a threshold of a starting voltage can be greatly lowered, and the improvement of the fiber yield is further facilitated.

Description

technical field [0001] The invention relates to an electrospinning device, in particular to a gas-induced electrospinning device which can be used for mass production of nanofibers. Background technique [0002] In recent years, the research on the manufacture and application of nanofibers has become a hot spot in the fields of micro-nanotechnology and biomedicine. Nanofibers have great potential application value in the fields of tissue engineering, filter membranes, protective clothing, catalysis, micro-nano sensors and actuators due to their surface effects, small size effects, quantum effects, and macroscopic quantum tunneling effects. . Among the many manufacturing technologies of nanofibers, electrospinning technology has attracted extensive attention from academia and industry due to its advantages such as simple system, low preparation cost, continuous long fibers and pure physical stretching. Although traditional electrospinning is simple and effective, its produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00
Inventor 孙道恒邱小椿吴德志杜晓辉徐兵陈燕君林立伟
Owner XIAMEN UNIV