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Core-shell structure TiO2/ATO nano-fiber and preparation method thereof

A core-shell structure and nanofiber technology, applied in fiber processing, fiber chemical characteristics, filament/wire forming, etc., to achieve good application prospects, high efficiency, and large specific surface area

Active Publication Date: 2013-09-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

while TiO 2 The preparation of / ATO composite materials is less studied at this stage. Among the relevant information found, the chemical co-precipitation method is mostly used. 2 The surface is coated with ATO to prepare conductive powder, and the product application has certain limitations. So far, there is no research on TiO 2 / Related reports on ATO composite nanofibers

Method used

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  • Core-shell structure TiO2/ATO nano-fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A: Measure 20ml of ethanol, 2ml of tetrabutyl titanate, and 2g of polyvinylpyrrolidone in a conical flask, mix and stir to obtain a uniform core layer spinning solution;

[0027] B: Weigh 100mg of tin tetrachloride pentahydrate, 40mg of antimony trichloride, and 2g of polyvinylpyrrolidone and dissolve them in 20ml of ethanol to obtain a uniform shell spinning solution;

[0028] C: Place the spinning solution prepared in step A and step B in the electrospinning equipment, spin coaxially, the spinning voltage is 15kV, the spinning distance is 15cm, the core layer spinning solution advances at a speed of 1mL / h, and the shell layer Spinning solution propulsion speed 3.3mL / h, obtain non-woven fiber mat;

[0029] D: Place the fiber mat obtained in step C in a temperature-programmed muffle furnace, increase the temperature at a rate of 4°C / min, raise the temperature to 700°C, and calcinate for 2 hours to obtain TiO 2 / ATO nanofibers.

Embodiment 2

[0031] A: (1) Measure 40mL N,N-dimethylformamide and 6g polyvinylpyrrolidone in a conical flask for mixing and stirring; (2) Measure 10mL tetrabutyl titanate and 50mL ethanol in a conical flask Mix and stir; (3) Take 2.5mL of the solution in (2) and add it to (1) to mix and stir to obtain a uniform core layer spinning solution;

[0032] B: Weigh 200mg of tin tetrachloride pentahydrate, 60mg of antimony trichloride, and 6g of polyvinylpyrrolidone and dissolve them in 40mL of N,N-dimethylformamide to obtain a uniform shell spinning solution;

[0033] C: Place the spinning solution prepared in steps A and B in an electrospinning device, spin coaxially, with a spinning voltage of 15kV, a spinning distance of 15cm, and a core layer spinning solution advancing speed of 0.2mL / h. The propulsion speed of the layer spinning solution is 0.1mL / h to obtain a non-woven fiber mat;

[0034] D: Place the fiber mat obtained in step C in a temperature-programmed muffle furnace, increase the tem...

Embodiment 3

[0036] A: Measure 16mL of ethanol, 4mL of acetic acid, 2mL of tetrabutyl titanate, and 2g of polyvinylpyrrolidone in a conical flask for mixing and stirring to obtain a uniform core layer spinning solution;

[0037] B: Weighing 100mg of tin tetrachloride pentahydrate, 30mg of antimony trichloride, and 2g of polyvinylpyrrolidone were dissolved in 16mL of ethanol and 4mL of acetic acid to obtain a uniform shell spinning solution;

[0038] C: Place the spinning solution prepared in step A and step B in the electrospinning equipment, spin coaxially, the spinning voltage is 15kV, the spinning distance is 15cm, the core layer spinning solution advances at a speed of 1mL / h, and the shell layer The propulsion speed of the spinning solution is 2.2mL / h to obtain a non-woven fiber mat;

[0039] D: Place the fiber mat obtained in step C in a temperature-programmed muffle furnace, increase the temperature at a rate of 4°C / min, raise the temperature to 600°C, and calcinate for 8 hours to ob...

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Abstract

The invention discloses a core-shell structure TiO2 / ATO nano-fiber and a preparation method thereof, and belongs to the technical field of nano-fibers. The core layer of the nano-fiber is TiO2 and the shell layer of the nano-fiber is ATO, wherein the TiO2 is 10wt%-90wt%. The preparation method of the core-shell structure TiO2 / ATO nano-fiber comprises the following the steps of: dissolving tetrabutyl titanate and polyvinylpyrrolidone in an organic solvent, stirring to obtain a uniform core-layer spinning solution; dissolving tetrachlorostannane pentahydrate, antimony trichloride and polyvinylpyrrolidone in the organic solvent, stirring to obtain a uniform shell-layer spinning solution; placing the spinning solution in an electrostatic spinning device, coaxially spinning in an electrostatic manner to obtain a non-woven fabric type fiber felt; roasting to obtain the core-shell structure TiO2 / ATO nano-fiber. The core-shell structure TiO2 / ATO nano-fiber disclosed by the invention is kept with good morphology, is a continuous fiber structure, and is better in single dispersion and small in fiber diameter.

Description

technical field [0001] The invention relates to a core-shell structure TiO 2 The invention discloses an ATO nanofiber and a preparation method thereof, belonging to the technical field of nanofibers. technical background [0002] Titanium dioxide, commonly known as titanium dioxide, is light in color, stable in nature, has good covering ability and semiconductor performance, and is particularly valuable because titanium dioxide is non-toxic, cheap, has a wide range of raw material sources, and low cost of use. It is mostly used in the rubber industry and the plastics industry. , paper industry, paint industry, daily chemical and pharmaceutical industry, food industry, environmental protection, etc. ATO, Chinese name antimony tin oxide, has good light transmittance and conductivity, can be used as excellent heat insulation powder, conductive powder (antistatic powder), its good heat insulation performance, widely used in coatings, chemical fibers, polymers film and other fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/18D01F11/00D01D5/00D01D5/34
Inventor 陈建峰刘倩乐园刘孟涛
Owner BEIJING UNIV OF CHEM TECH
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