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A curved array electrospinning nozzle with sheath gas confinement

An arc-shaped array and electrospinning technology, which is applied in the field of electrospinning, can solve the problems of continuous and stable injection of jets, and achieve the effects of improving injection stability, reducing diameter, and improving injection efficiency

Active Publication Date: 2019-12-27
厦门定慧力教育科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that the repulsion between adjacent nozzles and the uneven electric field at different nozzles will make it difficult to maintain a stable jet (Theron S A, Yarin A L, Zussman E, et al. Multiple jets inelectrospinning: experiment and modeling[J]. Polymer, 2005,46(9):2889-2899)

Method used

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  • A curved array electrospinning nozzle with sheath gas confinement
  • A curved array electrospinning nozzle with sheath gas confinement
  • A curved array electrospinning nozzle with sheath gas confinement

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 Shown is a specific embodiment of the present invention, which is provided with an upper cover plate 1, a needle mounting plate 2, an outer locking screw 3, a conductive plate 4, a support plate 5, an inner locking screw 6, a gas shield 7 and a needle array 8 . The needle mounting plate 2 is provided with threaded holes, and the needle mounting plate 2 , the conductive plate 4 and the support plate 5 are fixedly connected by inner locking screws 6 . The upper cover 1 is provided with threaded holes, and the upper cover 1 , the needle mounting plate 2 and the gas cover 7 are fixedly connected by external locking screws 3 . Needle array 8 is composed of 7 stainless steel dispensing needles arranged in an arc-shaped array. The height difference between the outermost needle and the middle needle is 12cm, and the needle spa...

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Abstract

The invention provides an arc-shaped array electrostatic spinning sprayer with a sheath gas restriction function. The arc-shaped array electrostatic spinning sprayer is provided with an upper cover plate, a needle head installation plate, a current-conducting plate, a supporting plate, a needle head array and an gas hood; a liquid inlet is formed in the upper cover plate, and the upper cover plateis connected with a liquid supply device; the needle head installation plate is of a stepped structure, the height difference of the stepped structure is consistent with the height difference of a needle head at the corresponding position; the current-conducting plate is connected with the positive pole of a high-voltage power supply; the supporting plate cooperates with the current-conducting plate, supporting plate through holes are formed in the supporting plate, the size of the supporting plate through holes is equal to the size of holes in the current-conducting plate, and the supportingplate through holes are coaxial with the holes in the current-conducting plate; the needle head array is provided with needle heads which are arranged in an arc-shaped array, the needle head in the middle of the needle head array is located at the lowest point, and the needle heads on the two sides of the needle head array are symmetrically arranged; two gas inlets are formed in the gas hood, andthe gas hood is connected with a gas supply device through a gas guide pipe. Electric field suppression interference between electrostatic spinning multi-jet sprayer bodies and electrostatic interference between multiple jets can be reduced, the multi-jet density and the jet stability are improved, the deposition efficiency of electrostatic spinning nanofibers is improved, and quick formation oflarge-area uniform nanofiber membranes is achieved.

Description

technical field [0001] The invention relates to the field of electrospinning, in particular to an arc-shaped array electrospinning nozzle with sheath gas restriction. Background technique [0002] As a micro-nanofiber manufacturing technology, electrospinning has attracted widespread attention from scholars and even the industry due to its advantages of simple equipment, controllable operation, wide range of raw materials, and low cost. The efficiency of traditional single-nozzle electrospinning is very low, only about 0.1g / h, which limits the increase in the output of electrospun nanofibers. Realizing the rapid and batch deposition preparation of nanofiber membranes with uniform diameter and high porosity is the focus of its application research, and it is also an important prerequisite for the industrialization of electrospinning technology. Exploring the high-density multi-jet jet control strategy has become the key to batch electrospinning. Multi-needle batch electrosp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D01D13/02
CPCD01D5/0069D01D13/02
Inventor 郑高峰姜佳昕庄明凤郑建毅柳娟刘益芳
Owner 厦门定慧力教育科技有限公司
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