UV-curing-based solvent-free electrostatic spinning apparatus

An electrospinning, solvent-free technology, applied in the field of solvent-free electrospinning devices, can solve the problems of troublesome preparation of precursor liquid, incomplete curing, irregularity, etc., and achieve the effects of complete curing, good uniformity and regular morphology.

Active Publication Date: 2015-11-25
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, it can be used as the precursor of solvent-free electrospinning. However, reports on UV-solvent-free electrospinning technology are rare. Chinese patent (patent publication number: CN101021017A) discloses the preparation of micro-nano fibers by solvent-free electrospinning. The method is mainly to cure the precursor solution containing active double

Method used

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  • UV-curing-based solvent-free electrostatic spinning apparatus
  • UV-curing-based solvent-free electrostatic spinning apparatus
  • UV-curing-based solvent-free electrostatic spinning apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a UV curing-based solvent-free electrostatic spinning device includes a high-voltage power supply 1, a liquid storage mechanism 12, a spinning nozzle 8, an oxygen barrier, an ultraviolet light source 2, and a collector. The spinning nozzle 8 is connected to the liquid storage mechanism 12 for storing the spinning precursor liquid. The liquid storage mechanism 12 is a plastic syringe needle, the collector is connected to the negative electrode of the high-voltage power supply 1, and the oxygen barrier includes an internal oxygen-free mechanism. Or a sealed box 14 with less oxygen, the spinning nozzle 8 and the collector are located in the sealed box 14, the ultraviolet light source 2 is located outside the sealed box 14, the emitted ultraviolet light can be injected into the sealed box 14, and the ultraviolet light source 2 can illuminate Between the spinning nozzle 8 and the collector.

[0036] Specifically, the sealed box 14 of the oxygen barrie...

Embodiment 2

[0039] The UV curing-based solvent-free electrostatic spinning device of Example 2 is similar to the device of Example 1, except that the sealed box of the oxygen barrier mechanism of the device of Example 2 is a glass vacuum dryer, which is connected to the glass vacuum dryer. Vacuum pump, the ultraviolet light source is located in a sealed box, the ultraviolet light source can irradiate between the spinning nozzle and the collector, the collector is grounded on an aluminum plate, the liquid storage mechanism of embodiment 2 is an aluminum tank connected with the spinning nozzle .

Embodiment 4

[0052] Using the device of Example 1 to prepare ordered polyurethane acrylate micro-nano fibers includes the following steps:

[0053] (1) Add 0.5 g of solid photoinitiator (184,1-hydroxy-cyclohexyl-phenyl ketone, Aldrich) into the Erlenmeyer flask, then add 9 g of polyurethane acrylate (DR-U301, Changxing Chemical Industry Co., Ltd. (Taiwan)), shading and stirring with a magnetic stirrer, heating in a 50 degree water bath, stirring for 1 hour, so that the solid photoinitiator and the polyurethane acrylate are mixed and dissolved uniformly.

[0054] (2) Let it stand for 1 day at room temperature to pre-polymerize the urethane acrylate to a certain extent.

[0055] (3) Inject the prepared precursor solution into the liquid storage mechanism of the device of Example 1. The spinning nozzle is an aluminum nozzle with an inner diameter of 2 mm at the spray end, and a carbon dioxide cylinder is used as a gas source to pass carbon dioxide into the sealed box. The gas, the gas flow rate is ...

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Abstract

The present invention discloses a UV-curing-based solvent-free electrostatic spinning apparatus. The apparatus comprises a high voltage power supply, a liquid storage mechanism, a spinning nozzle, an oxygen isolating mechanism, an ultraviolet light source and a collector; the anode of the high voltage power supply is connected with the spinning nozzle; the spinning nozzle is communicated with the liquid storage mechanism for storing spinning precursor solution; the collector is connected with the cathode of the high voltage power supply or directly grounded; the oxygen isolating mechanism comprises a sealing box, the inside of which is anoxic or mionectic; the spinning nozzle and the collector are positioned in the sealing box; the ultraviolet light source is positioned in the sealing box or ultraviolet light emitted by the ultraviolet light source can enters into the sealing box; and the ultraviolet light source can irradiate space between the spinning nozzle and the collector. The apparatus can be used for continuously preparing photo-curing material micro-nano fiber in batches. The apparatus is simple in operation and safe and environment-friendly, environmental pollution caused by organic solvent volatilization can be effectively avoided, and the apparatus is especially suitable for large-scale commercial production of the photo-curing material micro-nano fiber.

Description

Technical field [0001] The invention relates to a solvent-free electrostatic spinning device based on UV curing. Background technique [0002] Electrospinning technology is a simple and effective method for preparing micro / nano fibers. Not only can we prepare uniform and continuous one-dimensional fibers, but also micro / nano fibers with various morphology and structural characteristics. However, with the rapid development of nanotechnology, people are paying more and more attention to environmental protection and large-scale production. Traditional electrospinning generally requires the use of a large amount of organic solvents in the preparation of micro / nano fiber precursor solutions, and during electrospinning, more than 80% of the organic solvents are volatilized and difficult to recycle, causing pollution and making the solution electrospinning The industrialization of silk preparation of micro / nano fibers is limited. [0003] In order to solve the problem of solvent volatil...

Claims

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Application Information

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IPC IPC(8): D01D5/00D01D10/00D01D7/00
Inventor 龙云泽何宏伟王乐张丽华段晓鹏董瑞华秦崇崇赵惠夏临华
Owner QINGDAO UNIV
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