Device for preparing nano fibers with ordered arrangement and cross structures

A technology of orderly arrangement of nanofibers, applied in fiber processing, textiles and papermaking, clustering of newly extruded filaments, etc., to achieve good safety, small diameter and good application prospects

Inactive Publication Date: 2010-10-13
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the search, there are no mature reports on the technical methods and equipment combining electrospinning technology and centrifugal spinning technology at present. A low-voltage centrifugal electrospinning technology is sought, which uses low voltage and can prepare ordered arrangements and cross structures. The nanofibers, and then the technical methods and equipment devices for preparing nanoelectronic devices and optical devices have important scientific significance and broad application prospects

Method used

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  • Device for preparing nano fibers with ordered arrangement and cross structures
  • Device for preparing nano fibers with ordered arrangement and cross structures
  • Device for preparing nano fibers with ordered arrangement and cross structures

Examples

Experimental program
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Embodiment

[0014] Example: Preparation of ordered electrospun fibers

[0015] The spinning solution selected in this embodiment is a polystyrene (PS) solution with a mass percentage of 18 wt%. First, 1.8 g of PS (molecular weight is 250,000) particles are slowly added to 8.2 g of tetrahydrofuran (THF) and N under magnetic stirring. In a mixed solution of N-dimethylformamide (DMF) (the mass ratio of THF to DMF is 1:1), magnetic stirring at room temperature for 4 hours, and then standing for 0.5 hours, a uniform and transparent 18wt% PS static electricity can be obtained. Spinning precursor solution; then the positive pole of the high-voltage power supply is connected to the metal rod 4, and the negative pole is connected to the annular metal collecting pole 10 and grounded 11; the position of the spinning solution container 1 (syringe) on the insulating rotating disk 3 is adjusted so that the processed The horizontal distance between the tip of the hollow stainless steel needle 2 and the ...

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Abstract

The invention belongs to the technical field of electrostatic spinning, and relates to a low-pressure centrifugal electrostatic spinning device for preparing nano fibers with ordered arrangement and cross structures for nano electronic devices and optical devices. A spinning solution container with a processed hollow stainless steel needle is fixed on the upper side of an insulating rotary table, a rotary shaft of a rotary motor is connected with the insulating rotary table together through an insulating support body and drives the insulating rotary table to rotate, the processed hollow stainless steel needle is connected with an anode of a high-voltage power supply, a metal rod coaxial with the rotary shaft is fixed at the circle center of the insulating rotary table, and the metal rod is communicated with the processed hollow stainless steel needle through a metal lead; both a rotational speed control panel of the motor and the high-voltage power supply or a voltage control panel have a power supply switch and an adjusting knob; and the cathode of the high-voltage power supply is connected with an annular metal collector and grounded. The device has the advantages of simple structure, reliable principle, low working voltage and good safety; and the prepared nano fibers have high order degree and attractive appearance.

Description

Technical field: [0001] The invention belongs to the technical field of electrospinning, and relates to a low-pressure centrifugal electrospinning device for preparing nanofibers with ordered arrangement and cross structure that can be used for nanometer electronic devices and optical devices. Background technique: [0002] Electrospinning is a simple and easy method that can directly prepare continuous fibers from polymers and composite materials. Its outstanding advantages are low equipment and experimental costs, high fiber yield, and large specific surface area of ​​the prepared fibers. (The fiber diameter is in the range of several nanometers to several micrometers), and applicable to many different kinds of materials, electrospun nanofibers have a wide range of potential applications in civil, military and many other fields. The principle and equipment of electrospinning are simple. The high-voltage power supply provides high voltage. The positive electrode is connecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D7/00
Inventor 龙云泽李蒙蒙赵志立孔文豪董刚
Owner QINGDAO UNIV
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