Electrostatic spinning device for preparing coaxial nanofiber in batches

Abstract

The invention provides an electrostatic spinning device for preparing coaxial nanofiber in batches. The electrostatic spinning device for preparing the coaxial nanofiber in batches is characterized by comprising a first liquid supplying device, a second liquid supplying device, a needle-free coaxial electrostatic spinning spraying head, a fiber collecting device and a high pressure generator, the needle-free coaxial electrostatic spinning spraying head comprises an outer solution spinneret and an inner solution spinneret arranged on the inner side of the outer solution spinneret, the outer solution spinneret and the inner solution spinneret are connected with the first liquid supplying device and the second liquid supplying device respectively, an outer solution and an inner solution are placed in the first liquid supplying device and the second liquid supplying device respectively, the outer solution is covered with the inner solution on the edge of the needle-free coaxial electrostatic spinning spraying head in the axial direction, so that a coaxial composite solution is formed, and multiple coaxial spinning jet flows are formed in the axial direction along the edge of the needle-free coaxial electrostatic spinning spraying head under the action of a high pressure static electric field generated by the high pressure generator. By the adoption of the electrostatic spinning device, nanofiber felt of skin core structures can be manufactured in batches.

Description

technical field [0001] The invention relates to a coaxial electrospinning device, in particular to an electrospinning device for preparing coaxial nanofibers in batches. Background technique [0002] Due to their small diameter and high specific surface area, electrospun nanofibers have played a huge role in biomedical materials, filtration, catalysis, energy, optoelectronics and other fields. The traditional electrospinning technology uses a single needle for spinning, and can only prepare nanofibers with a single structure. In 2002, the scientist Loscertales invented the first coaxial electrostatic spraying equipment. Later, some scientists applied this technology to the field of electrospinning. By modifying the structure of the nozzle, the coaxial electrospinning technology was developed, which can prepare a skin-core structure. of nanofibers. Due to the special structure of coaxially spun nanofibers, it has been applied to more and more potential fields, especially in...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low efficiency of the existing coaxial electrospinning technology, to provide a convenient electrospinning device that can prepare coaxial nanofibers in batches, through the needle-free coaxial electrospinning in the device The nozzle can form a large number of coaxial spinning jets at the same time, which greatly improves the efficiency of coaxial electrospinning

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