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Preparation method of tio2/graphite nanosheet composite powder for electrothermal coating

A technology of graphite nanosheets and composite powders, which is applied in the field of modification technology, can solve the problems of short lifespan and low heating efficiency of electrothermal film, and achieve the effect of increasing specific surface area and simple technology.

Active Publication Date: 2019-04-30
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of short service life and low heating efficiency of the electric heating film in the prior art, the present invention proposes a method that is easy to prepare, requires low equipment, and enhances the service life of the product and improves the heating performance of the product by attaching a large amount of titanium dioxide to the surface of the graphite nanosheet. TiO for electrothermal coating 2 / Preparation method of graphite nanosheet composite powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of TiO for electrothermal coating film 2 / The preparation method of graphite nanosheet composite powder, it carries out as follows: get 15ml 1mol / L dilute hydrochloric acid solution and 0.5g titanium oxysulfate and add to 80ml water and stir until the solution is completely transparent, then add 0.5g graphite nanosheet and stir After 10 minutes, put it into an ultrasonic pool for 30 minutes, heat it in a hydrothermal reaction kettle to 140°C and keep it warm for 12 hours, after suction filtration and washing, dry it in a 65°C drying oven for 12 hours to obtain TiO 2 / Graphite nanosheet composite powder.

Embodiment 2

[0016] A kind of TiO for electrothermal coating film 2 The preparation method of composite powder of / graphite nano sheet, comprises the following steps:

[0017] First soak the graphite nanosheets in strong oxidizing acids such as concentrated sulfuric acid or concentrated nitric acid, and then take 15ml of 1mol / L dilute hydrochloric acid solution and 0.5g of titanyl sulfate into 80ml of water and stir When the solution is completely transparent, add 0.5g of graphite nanosheets and stir for 10 minutes, put it in an ultrasonic tank for 30 minutes, heat it to 140°C in a hydrothermal reaction kettle and keep it for 12 hours. Dry for 12 hours to get TiO 2 / Graphite nanosheet composite powder.

Embodiment 3

[0019] A kind of TiO for electrothermal coating film 2 The preparation method of composite powder of / graphite nano sheet, comprises the following steps:

[0020] Soak the graphite nanosheets in strong oxidizing acids such as concentrated sulfuric acid or concentrated nitric acid, filter them with suction, wash them with alcohol, and dry them, then add 15ml of 1mol / L dilute hydrochloric acid solution and 0.5g of titanyl sulfate to 80ml of water Stir until the solution is completely transparent, then add 0.5g of graphite nanosheets and stir for 10 minutes, put it in an ultrasonic tank for 30 minutes, heat it to 140°C in a hydrothermal reaction kettle and keep it warm for 12 hours, wash it with alcohol after suction filtration, and then put Graphite nanosheets were dried in a drying oven at 65°C for 12 hours to obtain TiO 2 / Graphite nanosheet composite powder.

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Abstract

The invention relates to a modification process, in particular to a TiO2 for electrothermal coating of a process of attaching titanium dioxide on the surface of graphite nanosheets 2 A preparation method of graphite nano sheet composite powder, which uses titanyl sulfate as a titanium source, and forms a layer of uniform titanium dioxide film on the surface of graphite nano sheet by hydrothermal method. Compared with the prior art, the technology of the present invention is simple and requires no equipment, and the TiO on the graphite nanosheets 2 Uniform adhesion, double the specific surface area of ​​graphite nanosheets, TiO 2 The modified composite powder can be used in many different fields such as electrothermal materials, photodegradation, and battery electrodes.

Description

technical field [0001] The invention relates to a modification process, in particular to a TiO2 for electrothermal coating of a process of attaching titanium dioxide on the surface of graphite nanosheets 2 / The preparation method of graphite nano sheet composite powder. Background technique [0002] Electrothermal materials play a very important role in the field of scientific research. The research and development of electrothermal theory plays a decisive role in the application of new energy and the development of national economy. Most of the electric heating materials currently used are metal resistance wires, which have the disadvantages of heavy weight and poor corrosion resistance. With the discovery of graphene, the excellent performance of carbon materials has become an ideal heating material in the future, and research in this area has become a research hotspot. [0003] One of the commonly used methods for making graphene electrothermal materials is to uniformly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/21B82Y40/00H05B3/14
CPCC01P2004/60C01P2006/12H05B3/145H05B2203/013
Inventor 王春雨张鹏
Owner HARBIN INST OF TECH AT WEIHAI