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A large-scale solvent-free electrospinning method for preparing photocurable material micro-nano fibers

A technology of light-curing materials and micro-nano fibers, which can be used in spinning solution preparation, fiber treatment, textiles and papermaking, etc. It can solve problems such as inability to produce on a large scale, complex configuration process, and incomplete curing, so as to avoid oxygen-inhibited polymerization Phenomenon, good continuity, simple operation effect

Active Publication Date: 2018-04-17
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for preparing micro-nano fibers of photocurable materials by large-scale solvent-free electrospinning. The method is simple to operate, effectively avoids environmental pollution caused by organic solvent volatilization, and is safe and environmentally friendly. It is especially suitable for large-scale commercial production of micro-nano fibers of light-curable materials. At the same time, it overcomes the complicated configuration process of the micro-nano fiber precursor solution of electrospun light-curable materials, the obtained fibers are generally short and irregular, and the curing is not complete. Large-scale Due to the technical difficulties of production, a large amount of micro-nano fibers of light-curing materials with complete curing, regular shape and good continuity can be produced, which is suitable for large-scale production

Method used

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  • A large-scale solvent-free electrospinning method for preparing photocurable material micro-nano fibers
  • A large-scale solvent-free electrospinning method for preparing photocurable material micro-nano fibers
  • A large-scale solvent-free electrospinning method for preparing photocurable material micro-nano fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing ordered polyurethane acrylate micro-nano fibers by large-scale solvent-free electrospinning, the method uses an electrospinning device such as figure 1 As shown, it includes a high-voltage power supply 1, a liquid storage mechanism 12, a spinning nozzle 8, an oxygen barrier mechanism, an ultraviolet light source 2 and a collector. The positive pole of the high-voltage power supply 1 is connected to the spinning nozzle 8, and the spinning nozzle 8 is connected to store the spinning precursor The liquid storage mechanism 12 of the liquid, the liquid storage mechanism 12 is a plastic syringe needle tube, the collector is connected to the negative pole of the high voltage power supply 1, the oxygen isolation mechanism includes an oxygen-free or oxygen-poor sealed box 14 inside, and the spinning nozzle 8 and the collecting pole are positioned in the sealed box 14, and the ultraviolet light source 2 is positioned outside the sealed box 14, and the ultrav...

Embodiment 2

[0041] A method for preparing ordered urethane acrylate micro-nano fibers by large-scale solvent-free electrospinning. The device used in this method is similar to that of Example 1, except that the gas cylinder 3 used in Example 2 is filled with carbon dioxide gas. The method includes the following steps:

[0042] (1) Configure the spinning precursor solution: add 0.5 gram of solid-state photoinitiator (184,1-hydroxy-cyclohexyl-phenyl ketone, Aldrich) in the Erlenmeyer flask, then add 9 grams of polyurethane acrylate (DR -U301, Changxing Chemical Industry Co., Ltd. (Taiwan)), carried out shading stirring with a magnetic stirrer, adopted 50 degree water bath heating, and stirred for 1 hour to make the solid-state photoinitiator and polyurethane acrylate mix and dissolve evenly; statically under natural light at room temperature Place it for 1 day to prepolymerize the polyurethane acrylate to a certain extent to obtain a precursor solution;

[0043] (2) Electrospinning micro-n...

Embodiment 3

[0045] A method for preparing ordered urethane acrylate micro-nano fibers by large-scale solvent-free electrospinning. The device used in this method is similar to that of Example 1, except that the gas cylinder 3 used in Example 2 is filled with helium. The method includes the following steps:

[0046] (1) Configure the spinning precursor solution: add 0.1 gram of liquid photoinitiator (photoinitiator1173, 2-hydroxyl-2-methyl-1-phenyl-1-acetone, Aldrich) in the Erlenmeyer flask, then add 2 grams Polyurethane acrylate (Sartomer704, Sartomer (Guangzhou) Chemical Co., Ltd.), carry out shading stirring with a magnetic stirrer, adopt 40 degree of water bath heating, stir for 1.5 hours, make photoinitiator and polyurethane acrylate mix and dissolve evenly, at room temperature Stand under natural light for 1.5 days, so that the polyurethane acrylate undergoes a certain degree of prepolymerization to obtain a precursor solution;

[0047] (2) Electrospinning micro-nanofibers: inject ...

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Abstract

The invention discloses a large-scale solvent-free electrospinning method for preparing micro-nano fibers of light-curing materials, which comprises the following steps: (1) configuring a spinning precursor solution of light-curing materials; (2) electrospinning micro-nano fibers: (1) The prepared spinning precursor solution is placed in the liquid storage mechanism of the electrospinning device connected to the spinning nozzle, and the spinning nozzle and the collecting pole of the electrospinning device are placed in a hypoxic environment for electrospinning. Spinning, in the process of electrospinning, the ultraviolet light source is used to irradiate the jet ejected from the spinning nozzle, and the light-curing material micro-nano fibers can be collected on the collecting pole of the electrospinning device. The method is simple to operate, effectively avoids the environmental pollution caused by the volatilization of organic solvents, is safe and environmentally friendly, and is suitable for large-scale production of micro-nano fibers of light-curing materials. The fibers are generally short and irregular, the curing is incomplete, and the technical problems that cannot be mass-produced.

Description

technical field [0001] The invention relates to a large-scale solvent-free electrospinning method for preparing light-cured material micro-nano fibers, which belongs to the field of nano-material preparation. Background technique [0002] Electrospinning technology as a simple and effective method for preparing micro / nanofibers. Not only uniform and continuous one-dimensional fibers can be prepared, but also micro / nano fibers with various morphology and structural characteristics can be prepared. However, with the rapid development of nanotechnology, people pay 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 / nanofiber precursor solutions, and during electrospinning, more than 80% of the organic solvents will volatilize and are difficult to recover, resulting in pollution, making the electrospinning solution The industrializ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D1/02D01D5/00
Inventor 龙云泽何宏伟张丽华王乐段晓鹏董瑞华秦崇崇赵惠夏临华
Owner QINGDAO UNIV
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