Preparation method of ultra-long highly-orderly TiO2 micro/nanoscale fiber

A highly ordered, nano-scale technology, applied in fiber processing, fiber chemical characteristics, filament/wire forming, etc., can solve problems such as unseen patents and literature reports, achieve good application prospects, simple operation, and experimental reproduction good sex effect

Inactive Publication Date: 2016-11-23
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stable jet electrospinning technology is used to prepare highly ordered micron-scale and nanofiber materials with inorganic components, and there are no related patents or literature reports.

Method used

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  • Preparation method of ultra-long highly-orderly TiO2 micro/nanoscale fiber
  • Preparation method of ultra-long highly-orderly TiO2 micro/nanoscale fiber
  • Preparation method of ultra-long highly-orderly TiO2 micro/nanoscale fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 0.8g of PEO (Mw=4000,000), dissolve it in 20ml of dichloromethane, add 2ml of tetrabutyl titanate into the above solution, stir magnetically at room temperature for 8 hours, and then let it stand for 4 hours to prepare a transparent and uniform solution. , and Ti(OC) with a certain viscosity 4 h 9 ) 4 / PEO spinning solution. The weight proportion of each component of the spinning solution is: 8% of tetrabutyl titanate, 3% of PEO, and 89% of dichloromethane. Add the prepared spinning solution into the syringe of the spinning device for electrospinning, the nozzle diameter is 2mm, the angle between the nozzle and the horizontal plane is adjusted to 30°, a DC voltage of 6kV is applied, the curing distance is 20cm, and the room temperature is 25°C. Humidity is 30%, rotating drum is used as collecting device, and rotating speed is 1100rmp (1rpm is equal to 0.0022m / s), obtains Ti(OC 4 h 9 ) 4 / PEO composite fiber. Put the prepared composite fiber into a programma...

Embodiment 2

[0035] Weigh 0.8g of PEO (Mw=4000,000), dissolve it in 20ml of dichloromethane, add 2ml of tetrabutyl titanate into the above solution, stir magnetically at room temperature for 8h, and then let it stand for 4h to prepare a transparent, uniform, And Ti(OC) with a certain viscosity 4 h 9 ) 4 / PEO spinning solution. The weight proportion of each component of the spinning solution is: 8% of tetrabutyl titanate, 3% of PEO, and 89% of dichloromethane. Add the prepared spinning solution into the syringe of the spinning device for electrospinning, the nozzle diameter is 2mm, the angle between the nozzle and the horizontal plane is adjusted to 30°, a DC voltage of 6kV is applied, the curing distance is 20cm, and the room temperature is 25°C. Humidity is 30%, rotating drum is used as collecting device, and rotating speed is respectively 500,800,1100,1400rmp (1rpm is equal to 0.0022m / s), obtains four kinds of Ti(OC 4 h 9 ) 4 / PEO composite fiber. Put the composite fibers prepared...

Embodiment 3

[0038] Weigh 0.8g of PEO (Mw=4000,000), dissolve it in 20ml of dichloromethane, add 2ml of tetrabutyl titanate to the above solution, stir magnetically at room temperature for 8h, and then let it stand for 4h to make it transparent and uniform. And Ti(OC) with a certain viscosity 4 h 9 ) 4 / PEO spinning solution. The weight proportion of each component of the spinning solution is: 8% of tetrabutyl titanate, 3% of PEO, and 89% of dichloromethane. Add the prepared spinning solution into the syringe of the spinning device to carry out electrospinning. The nozzle diameter is 1mm, the angle between the nozzle and the horizontal plane is adjusted to 30°, a DC voltage of 6kV is applied, the curing distance is 20cm, and the room temperature is 25°C. Humidity is 30%, rotating drum is used as collecting device, and rotating speed is 1100rmp (1rpm is equal to 0.0022m / s), obtains Ti(OC 4 h 9 ) 4 / PEO composite fiber. The prepared composite fibers were placed in a programmable tempe...

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Abstract

The invention provides a preparation method of ultra-long highly-orderly TiO2 micro/nanoscale fiber. The preparation method includes following steps: (1), dissolving PEO used as a fiber forming formwork in a solvent, adding tetrabutyl titanate, stirring and standing to obtain a spinning solution, wherein molecular weight of PEO is 1000, 000-5000, 000; (2), subjecting the spinning solution to electrostatic spinning using a drum as a fiber collector to obtain highly-oriented Ti(OC4H9)4/PEO composite fiber; (3), heating and annealing the composite fiber through a program. The preparation method is simple to operate, low in equipment requirement and simple in preparation process, preparation of inorganic fiber which is arranged in a highly-orderly manner is enabled to be simple and easy to operate, and the preparation method is easy in mass production and high in experiment repeatability.

Description

technical field [0001] The invention relates to a method for preparing highly ordered micron-scale and nano-scale TiO 2 A fiber method belongs to the field of inorganic material synthesis. Background technique [0002] Electrospinning technology is currently one of the most effective technologies for preparing micron-scale, sub-micron-scale, and nano-scale fiber materials. It has the advantages of simple operation, low cost, simple equipment requirements, mild preparation conditions, simple process, and no pollution to the environment. , can prepare organic polymers, inorganic compounds, carbon fibers and various composite functional fiber materials. [0003] Professor Xia Y., an American scientist, pointed out that obtaining single nanofibers or oriented nanofibers is the prerequisite for the real application of electrospinning technology in the fields of microelectronics and micro-optics. A lot of troublesome operation and high cost; Compared with single nanofibers, in-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/10D01D5/00
Inventor 于洪全李越吴艳波宋杨
Owner DALIAN JIAOTONG UNIVERSITY
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