Preparation method for photocuring material micro-nano fiber via large-scale solvent-free electrospinning

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: 2016-01-06
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 mater

Method used

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  • Preparation method for photocuring material micro-nano fiber via large-scale solvent-free electrospinning
  • Preparation method for photocuring material micro-nano fiber via large-scale solvent-free electrospinning
  • Preparation method for photocuring material micro-nano fiber via large-scale solvent-free electrospinning

Examples

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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 preparation method for photocuring material micro-nano fiber via large-scale solvent-free electrospinning. The preparation method comprises the following steps of (1) preparing spinning pre-cursor solution for photocuring material, (2) electrospinning micro-nano fibers, in which the spinning pre-cursor solution prepared in the (1) step is disposed in a solution storage mechanism with a static electrospinning device communicated a spinning nozzle; the spinning nozzle of the static electrospinning device and a collection pole are placed in environment with inadequate oxygen for electrospinning; jet flows sprayed out by the spinning nozzle is irradiated by ultraviolet source during the electrospinning; and photocuring material micro-nano fiber can be collected on the collection pole of the static electrospinning device. The preparation method is simple and avoids pollution of organic solvent to the environment, so safety and environment protection can be achieved; the method is suitable for large-scale production for photocuring material micro-nano fibers; technical difficulties of complicate preparation procedures of pre-cursor solvent during electrospinning, short fibers, incomplete and irregular photocuring and incapability of large scale production.

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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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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