A solvent-free electrospinning device based on UV curing

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 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 industrialization of silk to prepare micro / nanofibers is limited. [0003] In order to solve the problem of...

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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 bond functional groups into micro-nano fibers under the action of ultraviolet light irradiation and initiator, but it needs to be mixed with the active diluent in a certain proportion, and the preparation of the precursor solution is relatively Troublesome, and the prepared fibers are generally short and irregular, incompletely cured, with a maximum length of 1 cm

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