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A nanofiber that can increase the specific surface area

A technology of nanofiber and core-shell structure, applied in fiber processing, fiber chemical characteristics, conjugated artificial filament, etc., can solve the problems of nanofibers without specific surface area and high manufacturing cost, and achieve great development prospects and application value , easy operation, low cost effect

Active Publication Date: 2016-06-15
高建华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention designs a nanofiber that can increase the specific surface area, and the technical problem it solves is that the existing nanofiber does not have a large specific surface area, and the manufacturing cost is high at the same time

Method used

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  • A nanofiber that can increase the specific surface area

Examples

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Embodiment 1

[0023] Step 1: Measure 50 grams of ethanol, 1 gram of tetrabutyl titanate, and 1 gram of polyvinylpyrrolidone in a container, mix and stir to obtain a uniform core layer spinning solution.

[0024] Step 2: Weighing 40g of tin tetrachloride pentahydrate, 20g of antimony trichloride and 5g of polyvinylpyrrolidone were dissolved in 40g of N,N-dimethylformamide to obtain a uniform shell spinning solution.

[0025] Step 3, place the spinning solution obtained in step 1 and step 2 in the electrospinning equipment, the setting distance between the spinneret and the receiving plate of the electrostatic spinning equipment is 15-20cm, and the flow rate of the nuclear layer spinning solution is 0.5 -2.0m1 / h, the diameter of the spinneret of the core layer spinning solution is 0.5-1.0mm; the flow rate of the shell spinning solution is 0.5-3.0ml / h, and the diameter of the spinneret of the shell spinning solution is 1.0-1.5mm ; After stably flowing out, apply an electrostatic voltage of 25k...

Embodiment 2

[0028] Step 1: Measure 60 grams of ethanol, 1 gram of tetrabutyl titanate, and 1 gram of polyvinylpyrrolidone in a container, mix and stir to obtain a uniform core layer spinning solution.

[0029] Step 2: Weighing 30g of tin tetrachloride pentahydrate, 20g of antimony trichloride and 5g of polyvinylpyrrolidone were dissolved in 40g of N,N-dimethylformamide to obtain a uniform shell spinning solution.

[0030] Step 3, place the spinning solution obtained in step 1 and step 2 in the electrospinning equipment, the setting distance between the spinneret and the receiving plate of the electrostatic spinning equipment is 15-20cm, and the flow rate of the nuclear layer spinning solution is 0.5 -2.0m1 / h, the diameter of the spinneret of the core layer spinning solution is 0.5-1.0mm; the flow rate of the shell spinning solution is 0.5-3.0m1 / h, and the diameter of the spinneret of the shell spinning solution is 1.0-1.5mm ; After stably flowing out, apply an electrostatic voltage of 25k...

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Abstract

The invention relates to a nanofiber with the specific surface area capable of being increased. The high-surface-area nanofiber has a nuclear-shell structure, a nuclear layer is made of titanium dioxide (TiO2), a shell layer is made of antimony tin oxide (ATO), the antimony tin oxide in the shell layer is SnO2 doped with a Sb element, wherein the mass percentage of the Sb element is 20-80%; the fiber structure is of a nuclear-shell structure formed by the process that the titanium dioxide is coated with the antimony tin oxide, wherein the mass percentage of the TiO2 is 20-80%, the mass percentage of the ATO is 20-80%; the average diameter of the nanofiber which is of the nuclear-shell structure is 100-450nm. The nanofiber which is of the nuclear-shell structure is prepared by using an electrostatic spinning technique, the preparation method is simple and easy to implement, and according to the obtained nanofiber material, the cost of conductive materials is lowered, and the nanofiber has a great specific surface area.

Description

technical field [0001] The invention relates to a nanofiber capable of increasing the specific surface area. Background technique [0002] Electrospinning technology was first realized in 1934 by Formhals et al. From the 1980s, especially in the last ten years (around 1995), driven by the upsurge of nanotechnology development, electrospinning has received renewed attention. Using this technology, it is easy to process many polymers into different fiber structures, Ultrafine fibers of different scales (submicron to nanometer). [0003] Polymer nanofibers that have been successfully prepared by electrospinning technology include polyamide (PA6, PA66), polyacrylonitrile (PAN), polyvinyl alcohol (PVA), polyethylene oxide (PEO), polylactic acid (PLA), Cellulose acetate (CA), polyurethane (PU), polycaprolactone (PCL) and many other polymer matrices. Chinese patent "Preparation method and application of an affinity acrylonitrile-based copolymer ultrafine fiber membrane" (publica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/18D01D5/00D01D10/00D01D5/34
Inventor 王飞殷翠萍
Owner 高建华
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