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Preparation method of flexible conductive ceramic fiber membrane

A ceramic fiber, flexible and conductive technology, which is applied in fiber processing, heating/cooling fabrics, textiles and papermaking, etc., can solve the problems of expensive and increased preparation costs, achieve low cost, short cycle time, and improve electronic conductivity.

Active Publication Date: 2019-08-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems with these reduction methods
For example, high-energy particles reduce TiO 2 Requires expensive equipment support; the application of hydrogen and metal reduction requires a long reaction time at high temperature, which greatly increases the preparation cost

Method used

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  • Preparation method of flexible conductive ceramic fiber membrane
  • Preparation method of flexible conductive ceramic fiber membrane
  • Preparation method of flexible conductive ceramic fiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for preparing a flexible conductive titanium dioxide ceramic fiber membrane, the specific steps are:

[0047] (1) Configure TiO composed of titanium source, polymer and solvent 2 Precursor solution: Dissolve 0.5g of high-molecular polymer polyethylene oxide (Aladdin, P101341) in 4g of glacial acetic acid at 30°C, stir for 120min, then add 8g of ethanol and 1.5g of isopropyl titanate to the solution, Stir to form a well-mixed TiO 2 precursor solution.

[0048] (2) the resulting TiO 2 The precursor solution is electrospun. Under the action of an electric field, the charge repulsion on the surface of the charged droplet exceeds its surface tension, forming a jet from the surface and going through a series of processes such as stretching, solvent volatilization, and polymer solution jet solidification, and finally deposited on the On the receiving substrate, the precursor nanofiber film is obtained. During electrospinning, a constant temperature thermal field of...

Embodiment 2

[0054] A method for preparing a flexible conductive titanium dioxide ceramic fiber membrane, the specific steps are:

[0055] (1) Configure TiO composed of titanium source, polymer and solvent 2 Precursor solution: Dissolve 0.5g of high-molecular polymer polyethylene oxide (Aladdin, P101341) in 4g of glacial acetic acid at 30°C, stir for 120min, then add 8g of ethanol and 1.5g of isopropyl titanate to the solution, Stir to form a well-mixed TiO 2 precursor solution.

[0056] (2) the resulting TiO 2 The precursor solution is electrospun, and the precursor nanofiber film is electrospun. A constant temperature thermal field of 25°C is applied in the spinning interval and the temperature of the receiving device is controlled to 25°C; the parameters of the electrospinning are: relative humidity 45% , the perfusion speed is 3mL / h, the voltage is 20kV, the distance between the receiving device and the spinneret is 20cm, the rotating speed of the receiving device is 60n / min, and th...

Embodiment 3

[0063] A method for preparing a flexible conductive oxide ceramic fiber membrane, the specific steps are:

[0064] (1) Configure SnO composed of tin source, polymer and solvent 2 Precursor solution: Dissolve 2g of high-molecular polymer polyvinyl alcohol (Aladdin, polyvinyl alcohol 1788 type) in 18g of water at 30°C, stir at 90°C for 120min, cool to room temperature, take 10g of PVA solution, and slowly add to the solution Add 1g SnCl to 4 ·5H 2 O, add water and stir at the same time, adjust the mass fraction of PVA to 6%, and form a uniformly mixed SnO 2 Precursor solution;

[0065] (2) The resulting SnO 2 The precursor solution is electrospun. Under the action of an electric field, the charge repulsion on the surface of the charged droplet exceeds its surface tension, forming a jet from the surface and going through a series of processes such as stretching, solvent volatilization, and polymer solution jet solidification, and finally deposited on the On the receiving sub...

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Abstract

The invention provides a preparation method of a flexible conductive ceramic fiber membrane. The method is characterized by comprising steps as follows: step 1: a TiO2 precursor solution is prepared,wherein the precursor solution contains a titanium source, a high-molecular polymer and a solvent; step 2: the TiO2 precursor solution is electrospun, and a precursor nanofiber membrane is obtained; step 3: the precursor nanofiber membrane is calcined in the air atmosphere, and a flexible TiO2 ceramic fiber membrane is obtained; step 4: the obtained flexible TiO2 ceramic fiber membrane is contacted with a metal lithium sheet in the vacuum atmosphere, the solvent is dropwise added to the surface of the fiber membrane, and the flexible conductive ceramic fiber membrane is obtained.

Description

technical field [0001] The invention relates to a preparation method of a flexible ceramic fiber membrane and a method for rapidly increasing its electrical conductivity at normal temperature, belonging to the technical field of new material processing. Background technique [0002] Oxide ceramics have been widely studied and applied in the fields of energy storage, photocatalysis, and sensing due to their unique electronic structures, excellent thermal properties, and chemical stability. However, these materials usually have large band gaps and low room temperature carrier mobility, resulting in low electrical conductivity. These factors severely restrict the application range of oxide ceramic materials. Therefore, it is of great significance to find oxide ceramic materials with excellent electrical conductivity. [0003] Among many oxide ceramic materials, TiO 2 With its abundant, cheap, non-toxic, unique optical and electrical properties and other advantages, it has at...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/413D06C7/00D06M11/83
CPCD04H1/728D04H1/413D06C7/00D06M11/83
Inventor 闫建华张苑苑俞建勇丁彬
Owner DONGHUA UNIV
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