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A three-level arrangement of microfluidic control nozzles, spinning device and spinning method

A technology of microfluidics and nozzles, which is applied in textiles and papermaking, filament/thread forming, fiber processing, etc. It can solve the problems of complex nanofiber technology and achieve significant technological progress, easy control, and convenient operation.

Inactive Publication Date: 2019-01-15
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a three-stage arrangement of microfluid control nozzles, a spinning device and a spinning method. The three-stage arrangement of microfluid control nozzles, spinning device And the spinning method will solve the complex technical problem of preparing three-level arranged structure nanofibers in the prior art

Method used

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  • A three-level arrangement of microfluidic control nozzles, spinning device and spinning method
  • A three-level arrangement of microfluidic control nozzles, spinning device and spinning method
  • A three-level arrangement of microfluidic control nozzles, spinning device and spinning method

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Effect test

Embodiment 1

[0027] like figure 1 As shown, the present invention provides a microfluidic control nozzle arranged in three stages, including a total capillary 1 , a first curved capillary 2 and a second curved capillary 3 .

[0028] The cross-section of the outlet end of the total capillary 1 is elliptical; the first curved capillary 2 includes a first straight line segment and a first bending portion, and the first straight line segment is arranged on the total capillary 1 Among them, the outer side wall of the first straight line section is close to an inner side wall of the total capillary 1, the outlet end of the first curved capillary 2 protrudes from the outlet end of the total capillary 1, and the The bending part of the first curved capillary 2 passes through the side of the total capillary 1;

[0029]The second curved capillary 3 includes a second straight section and a second bending portion, the second straight section is arranged in the total capillary 1, and the outer wall o...

Embodiment 2

[0034] A high-voltage electrospinning device assembled using the nozzle, its composition schematic diagram is as follows image 3 As shown, 7-high pressure generator, 8-first syringe pump, 9-second syringe pump, 10-third syringe pump, 11-three-stage microfluidic electrospray head, 12-fiber receiving plate, 13-th One syringe, 14-the second syringe, 15-the third syringe, 16-the first high-elastic silicone hose; 17-the second high-elastic silicone hose.

[0035] An electrospinning device with a microfluidic control nozzle arranged in three stages is used to carry out electrospinning preparation of three fluids, and the specific steps are as follows: the first syringe 13 is installed in the first syringe pump 8, and the first spinning filament is added to the syringe 13. For liquid, the syringe 13 is directly connected to the interface port of the microfluidic control nozzle 11 arranged in three stages. The second syringe 14 is installed in the second syringe pump 9, and the seco...

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Abstract

The invention provides a three-level arrangement microflud control nozzle which comprises a master capillary tube, a first bent capillary tube and a second bent capillary tube. The cross section of the outlet of the master capillary tube is in an elliptic shape. The straight line section of the first bent capillary tube is arranged in the master capillary tube. The outer side wall of the first straight line section is tightly attached to one inner side wall of the master capillary tube. The outlet end of the first bent capillary tube stretches out of the outlet end of the master capillary tube, and the bent portion of the first bent capillary tube penetrates out from the side face of the master capillary tube; the second straight line section of the second bent capillary tube is arranged in the master capillary tube, the outer side wall of the second straight line section is tightly attached to the other inner side wall of the master capillary tube, the outlet end of the second bent capillary tube stretches out of the outlet end of the master capillary tube, and the bent portion of the second bent capillary tube penetrates out from the side face of the master capillary tube. The invention further provides a high-voltage static spinning device comprising the nozzle. By applying the device, nanofiber with the three-level arrangement complex structural characteristics can be effectively manufactured in one step.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation, and in particular relates to a three-stage arrangement of microfluid control nozzles, a multi-fluid electrospinning device with three-stage arrangement of microfluid control nozzles, and a single-step electrospinning process using the device. Method for preparing tertiary arrayed structured nanofibers. Background technique [0002] High-voltage electrospinning technology (referred to as electrospinning) is a top-down nano-manufacturing technology. The jet is formed by overcoming the liquid surface tension and viscoelastic force of the droplets at the tip of the nozzle by applying an electric field force. , Coulomb force and surface tension, the atomized liquid jet is bent, stretched, and split by high frequency, and is stretched tens of millions of times in tens of milliseconds, and is obtained at the receiving end by solvent volatilization or melt cooling. nanoscale fibers. This technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00
CPCD01D5/0015D01D5/0069
Inventor 余灯广杨俊和李海鹏王庆
Owner UNIV OF SHANGHAI FOR SCI & TECH