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Micro-nano corrugated structure and preparation method thereof, and device and application

A corrugated and electrospinning technology, applied in textiles and papermaking, filament/thread forming, spinneret assemblies, etc., can solve the problems of long time-consuming, complicated process, high cost, etc., to avoid residual stress and improve the preparation process Simple, Highly Reliable Effects

Inactive Publication Date: 2012-09-05
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its deficiency is as follows: (1) efficiency is low
The process is complicated and time-consuming, and the preparation of the corrugated structure on the elastic substrate cannot be completed at one time; (2) the cost is high
Requires expensive equipment such as lithography machines, and cannot be manufactured in a large area; (3) When manufacturing, it needs to be transferred, and the residual stress is high and cannot be effectively released; (4) Harsh to the environment
Need special environment such as vacuum, strict temperature control, can not be prepared under normal conditions

Method used

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  • Micro-nano corrugated structure and preparation method thereof, and device and application
  • Micro-nano corrugated structure and preparation method thereof, and device and application
  • Micro-nano corrugated structure and preparation method thereof, and device and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A: Prepare a polyethylene oxide solution with a concentration of 6% by weight, stir with a magnetic stirrer at 30°C for 20 hours, and stand still for 2 hours;

[0031] B: inject the above solution into the syringe 3, the inner diameter of the metal nozzle of the syringe is 0.8mm, and the metal nozzle is connected to the positive electrode of the high-voltage generator; use a gold-plated silicon chip as the metal collecting plate 5, and the distance between the metal collecting plate 5 and the metal nozzle 4 is 5cm; the metal collecting plate 5 is fixed on the moving platform X, moves in one direction at a speed of 5mm / s, and applies a voltage of 7KV for electrospinning.

Embodiment 2

[0033] A: Prepare a polyethylene oxide solution with a concentration of 6% by weight, stir with a magnetic stirrer at 30°C for 20 hours, and stand still for 2 hours;

[0034] B: inject the above solution into the syringe 3, the inner diameter of the metal nozzle of the syringe is 0.8mm, and the metal nozzle is connected to the positive electrode of the high-voltage generator; use a gold-plated silicon chip as the metal collecting plate 5, and the distance between the metal collecting plate 5 and the metal nozzle 4 is 5 cm; the metal collecting plate 5 is fixed on the moving platform X, the PDMS rubber substrate 6 is placed on the metal collecting plate 5, moves in one direction at a speed of 5mm / s, and is electrospun with an applied voltage of 8KV.

Embodiment 3

[0036] A: Prepare a PEDOT:PSS conductive solution with a concentration of 6% by weight, stir it with a magnetic stirrer at 25°C for 10 hours, and stand still for 2 hours;

[0037]B: inject the above-mentioned solution into the syringe 3, the inner diameter of the metal spray head of the syringe is 0.6mm, and the metal spray head is connected to the positive electrode of the high-voltage generator; use the gold-plated silicon wafer as the metal collecting plate 5, and the distance between the metal collecting plate 5 and the metal nozzle 4 is 3 cm; the metal collecting plate 5 is fixed on the moving platform X, the PDMS rubber substrate 6 is placed on the metal collecting plate 5, moves in one direction at a speed of 7mm / s, and applies a voltage of 10KV for electrospinning.

[0038] The above embodiments only provide illustrative steps, in which the concentration, voltage, inner diameter of the nozzle, and speed of the moving platform can be selected according to the experimenta...

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Abstract

The invention discloses a preparation method of a micro-nano corrugated structure. The preparation method comprises the following steps of: (1) adding electrostatic spinning macromolecular solution into a syringe of a syringe pump, and fully filling the solution into a metal nozzle connected with the anode of a high pressure generator; (2) placing a metal cathode collecting plate connected with the ground electrode of the high pressure generator below the metal nozzle of the syringe, placing a flexible base material on the collecting plate, controlling the macromolecular solution to flow out at certain velocity, and electrifying the macromolecular solution to form jet flow; and (3) moving the metal collecting plate so that the jet flow falls on the flexible base material, namely the corrugated structure is formed on the whole base material. The invention also discloses the micro-nano corrugated structure prepared by using the method, a device for implementing the method and application of the method. When the elastic rubber base material stretches, the formed nano fiber graph can produce great deformation together with the elastic rubber base material and does not break, so that effective interconnection and stretching of flexible electrons are realized, and the invention has broad application prospect on the aspects of electronic skin, artificial muscles, bioelectronics and the like.

Description

technical field [0001] The invention relates to a corrugated structure prepared by an electrospinning process, a preparation method, a device and an application thereof, and belongs to the technical field of micro-nano corrugated structures. Background technique [0002] Electrospinning, as a simple nanofiber production technique, can produce nanoscale fibers. Because single fibers are difficult to collect, they are currently widely used in the production of non-woven fabrics, and various graphics cannot be produced by weaving, which limits the application of nanofibers in textiles and other fields. In recent years, more and more attention has been paid to fabricating devices with large elastic deformation capacity or organic integration with various complex curved surfaces of human body or other organisms through bionic design (reference: By Dae-Hyeong Kim et al, Advanced Materials. 2010, 22, 2108), in order to improve the possibility of manufacturing such devices, Huang e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/02D01D5/00D01D4/00
Inventor 黄永安尹周平布宁斌王小梅段永青
Owner HUAZHONG UNIV OF SCI & TECH
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