Multi-jet-flow electrostatic spinning sprayer with uniformly distributed electric fields

An electrospinning and multi-jet technology, which is applied in the direction of spinneret assemblies, textiles and papermaking, etc., can solve the problems of solution formation defects, uncontrollable flow rate, and high unevenness of nanofibers, so as to facilitate the collection and elimination of electric fields The effect of repelling and increasing yield

Inactive Publication Date: 2014-03-26
DONGHUA UNIV
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  • Abstract
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Problems solved by technology

This method is to make the jet flow out from the free liquid surface under the action of a high-voltage electric field to reach the receiving plate. Compared with the multi-needle multi-jet technolo

Method used

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  • Multi-jet-flow electrostatic spinning sprayer with uniformly distributed electric fields
  • Multi-jet-flow electrostatic spinning sprayer with uniformly distributed electric fields
  • Multi-jet-flow electrostatic spinning sprayer with uniformly distributed electric fields

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[0034] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0035] The multi-jet electrostatic spinning nozzle with uniform electric field of the present invention, such as figure 1 As shown, it includes a solution injection tube 1, an electrode 2 and a spinneret 3. The spinneret 3 is a stepped spinneret with a hollow multi-stage circular platform superimposed on a small circular platform, see figure 2 with image 3 , The upper bottom surface of the round table of each stage is equipped with spinner...

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Abstract

The invention relates to a multi-jet-flow electrostatic spinning sprayer with uniformly distributed electric fields. The multi-jet-flow electrostatic spinning sprayer with the uniformly distributed electric fields comprises a solution injection tube, a spinneret plate and an electrode. The spinneret plate is a step-shaped spinneret plate formed by overlaying small circular truncated cones on multiple stages of hollow circular truncated cones, and the upper bottom surface of each stage of circular truncated cone is provided with spinneret orifices. The electrode is consistent with a hollow cavity of the spinneret plate in shape, and a gap is reserved between the electrode and the hollow cavity of the spinneret plate to form a solution cavity. The spinneret plate is made of hydrophobic insulation materials. According to the multi-jet-flow electrostatic spinning sprayer with the uniformly distributed electric fields, holes are formed in the hydrophobic insulation materials so that traditional metal needles can be replaced, electric field rejection between the needles is avoided, the rejection effect of jet flow sprayed out from the spinneret plate is weakened, and therefore nanofibers can be collected conveniently; in addition, the electric fields at the position of a center hole are effectively increased by the utilization of the step-shaped electrode and the spinneret plate matched with the step-shaped electrode, therefore, stable jet flow can be formed at the position of the center hole, and the nanofibers with even fineness can be obtained.

Description

technical field [0001] The invention relates to a multi-jet electrostatic spinning nozzle with uniform electric field distribution, in particular to a needleless multi-jet electrostatic spinning nozzle with uniform electric field distribution. Background technique [0002] Electrospinning technology is a process that can use a high-voltage electrostatic field to control the shape and specification of fibers to manufacture nanofiber webs or continuous fibers that are aligned. This technology is to overcome the surface tension of the polymer solution or melt under a high-voltage electrostatic field of several thousand volts to tens of thousands of volts to generate a charged jet flow. The solution or melt dries and solidifies during the spraying process, and finally falls on the receiving device Form fiber mats or other shapes of fiber aggregates. The core of electrospinning technology is to make the charged fluid flow and deform in the electrostatic field, and finally obtain...

Claims

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Application Information

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IPC IPC(8): D01D4/02
Inventor 郑元生曾泳春
Owner DONGHUA UNIV
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