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Preparation method and preparation device of nano fibers

A nanofiber and preparation device technology, applied in fiber processing, fiber chemical characteristics, conjugated artificial filaments, etc., can solve the problems of unclear interlayer interface, uneven coating, low yield, etc., and achieve interlayer interface Clear, good coating, small diameter effect

Inactive Publication Date: 2013-07-24
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Application Information

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Problems solved by technology

[0004] Existing technologies about coaxial electrospinning have the disadvantages of low yield, uneven coating and unclear interface between layers

Method used

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  • Preparation method and preparation device of nano fibers
  • Preparation method and preparation device of nano fibers
  • Preparation method and preparation device of nano fibers

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preparation example Construction

[0018] The present invention is a kind of nanofiber preparation method and its preparation device, and the steps of its method are:

[0019] (1) Prepare the precursor solution:

[0020] The composition of the precursor liquid of the core is: Ni(NO 3 ) 2 ·6H 2 O, Zn(NO 3 ) 2 6H2O and Fe(NO 3 ) 3 9H 2 The molar ratio of O is 0.5:0.5:2, accounting for 15.6wt%, PVP / C 2 h 5 OH accounted for 65.9wt%, CHCl 3 18.5wt%;

[0021] The composition of the precursor of the shell is: Zn(NO 3 ) 2 ·6H 2 O accounted for 14.9wt%, PVP / C 2 h 5 OH accounted for 66.4wt%, C 3 h 8 o 3 18.7wt%;

[0022] (2) Coaxial electrospinning:

[0023] Such as figure 1 , figure 2 As shown, the core precursor solution and the shell precursor solution were put into the core layer liquid storage container 1 and the shell layer liquid storage container 2 respectively, and a thin copper wire with a diameter of 20 μm was added to the inner wall of the core layer liquid storage container 1, The ap...

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Abstract

The invention provides a preparation method and a preparation device of of nano fibers. The method comprises the following steps of: preparing precursor solutions; carrying out coaxial electrostatic spinning; respectively filling a core precursor solution and a shell precursor solution into a core layer solution storage container (1) and a shell layer solution storage container (2); adding a thin copper wire with the diameter of 20 microns into an inner wall of the core layer solution storage container (1), wherein the applying voltage of a high-voltage direct-current power supply (5) is 16-18 KV, the environment temperature is 20 DEG C and the environment humidity is 50%; powering on the power supply and spinning; then carrying out drying treatment on spun wires, wherein the drying temperature is 70 DEG C and the drying time is 6 hours; then carrying out annealing treatment: and raising the temperature to 800 DEG C, keeping the heat at 800 DEG C for 300 min, and then naturally cooling, wherein the core layer solution storage container (1) is mounted in the shell layer solution storage container (2), an axial shower nozzle (3) is formed by the lower end of the core layer solution storage container (1) and the lower end of the shell layer solution storage container (2), and a thin copper wire is arranged on the inner wall of the core layer solution storage container (1).

Description

technical field [0001] The present invention relates to the preparation of nano magnetic material, specifically Ni 0.5 Zn 0.5 Fe 2 o 4 / ZnO one-dimensional coaxial nanofiber preparation technology. Background technique [0002] At present, coaxial electrospinning is used to prepare coaxial coated nanomaterials, such as ZnOCeO prepared by Xu Shuzhi et al. 2 TiNMnO fibers prepared by nano-cables, Shangchaoqun, etc. [0003] The technology of compounding nano-soft magnetic ferrite with silicon oxide or zinc oxide is still a blank. The composite material of nano-soft magnetic ferrite and silicon oxide or zinc oxide has magneto-optical properties; the material is made into a fiber by electrospinning, It can reduce the loss, improve the magnetic permeability μ, the saturation magnetic flux density Bs and the resistivity. Therefore, the coaxial nanofiber material with a core-shell structure prepared from soft ferrite and silicon oxide or zinc oxide has great magnetic propertie...

Claims

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Application Information

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IPC IPC(8): D01F8/18D01D5/00
Inventor 戴剑锋王青李维学姜岩戴怡乐刘骥飞张杰王泽昕孙毅彬
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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