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Carbon fluoride nanotube and method for making same

A technology of fluorinated carbon nanotubes and carbon nanotubes, which is applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of long reaction time, dangerous operation, complex investment in equipment, etc., and achieve low production cost and safety High and easy-to-obtain raw materials

Inactive Publication Date: 2008-10-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former takes a long time to react to dangerous operations, while the latter has complex equipment and large investment

Method used

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  • Carbon fluoride nanotube and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, mix 10 parts of multi-walled carbon nanotubes and 100 parts of polytetrafluoroethylene with a ball mill; put them into a reactor, seal them and put them into a muffle furnace; heat to maintain the reaction temperature at 475±25°C, and react for 1 to 10 Hours later, cool to room temperature, open the reactor, and after grinding, fluorinated carbon nanotubes.

[0026] Multi-walled carbon nanotubes can be directly replaced by an equal share of single-walled carbon nanotubes.

[0027] Polytetrafluoroethylene can be directly replaced by polyperfluoroethylene propylene or polyvinylidene fluoride solid powder in equal proportion.

[0028] The reaction time can be appropriately prolonged by adopting a lower reaction temperature; the reaction time can be appropriately shortened by adopting a higher reaction temperature. As long as the reaction temperature is controlled at 475±25° C. and the reaction time is adjusted accordingly within 1 to 10 hours, carbon nanotubes with...

Embodiment 2

[0030] First, mix 10 parts of multi-walled carbon nanotubes and 200 parts of copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ether evenly with a ball mill; put them into a reactor, seal them and put them into a muffle furnace; heat to maintain the reaction temperature After reacting at 550±50° C. for 1 to 10 hours, cool down to room temperature, open the reactor, and grind to obtain fluorinated carbon nanotubes.

[0031] Multi-walled carbon nanotubes can be directly replaced by an equal share of single-walled carbon nanotubes.

[0032] Tetrafluoroethylene and perfluoroalkyl vinyl ether copolymers can be directly replaced by ethylene and tetrafluoroethylene copolymers in equal proportions.

[0033] The reaction time can be appropriately prolonged by adopting a lower reaction temperature; the reaction time can be appropriately shortened by adopting a higher reaction temperature. As long as the reaction temperature is controlled at 550±50° C. and the reaction time is ...

Embodiment 3

[0035] First, mix 10 parts of multi-walled carbon nanotubes and 300 parts of dodecafluoroheptanol evenly with a colloid mill; put them into a reactor, seal it and put it into a muffle furnace; heat to maintain the reaction temperature at 150±500C, and react for 1~ After 10 hours, cool to room temperature, open the reactor, and grind to obtain fluorinated carbon nanotubes.

[0036] Multi-walled carbon nanotubes can be directly replaced by an equal share of single-walled carbon nanotubes.

[0037] Dodecafluoroheptanol can be directly replaced by an equal share of liquid organic fluorides with higher fluorine content, such as derivatives of dodecafluoroheptanol.

[0038] The reaction time can be appropriately prolonged by adopting a lower reaction temperature; the reaction time can be appropriately shortened by adopting a higher reaction temperature. As long as the reaction temperature is controlled at 150±50° C. and the reaction time is adjusted accordingly within 1 to 10 hours...

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Abstract

The invention relates to a perfluorocarbon nanotube and a preparation method thereof. The method is technically characterized in that the nanotube and organic fluorine are mechanically ground, fully and evenly mixed, then placed in a reactor, sealed and then immediately put into a muffle furnace; the heating temperature is maintained at 100 to 600 DEG C; the heating is stopped after the reaction time for 1 to 10 hours; then the reactor is opened after being cooled to the room temperature; and then the perfluorocarbon nanotube is obtained after grinding. The nanotube is a multi-walled carbon nanotube or a single-walled carbon nanotube. The organic fluoride is the organic fluoride of solid powders or liquids such as polyfluortetraethylene, fluorinated ethylene propylene, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, tetrafluoroethylene and perfluoroalkyl vinyl ether copolymer, dodecafluoroheptyl heptanol or derivants of dodecafluoroheptyl heptanol. The method overcomes the shortcomings of low safety, short apparatus service life and high product cost of the prior fluorization methods, and has the advantages of long service life, simple process, low production cost and no pollution, so as to be suitable for mass production.

Description

technical field [0001] The invention relates to a fluorinated carbon nanotube and a preparation method thereof, specifically using organic fluorine as a fluorinating agent to prepare the fluorinated carbon nanotube. Background technique [0002] Carbon nanotubes have unique electrical properties, good flexibility, good chemical stability, thermal stability and adsorption characteristics, and can be used as an ideal reinforcement for composite materials. However, because carbon nanotubes are easy to aggregate into bundles or entanglements, and compared with other nano-reinforced materials, their surface is relatively "inert", and their dispersion in common organic solvents is low, which greatly restricts their application performance. Research. Therefore, modifying the surface of carbon nanotubes has become a hot spot in the research of carbon nanotubes / polymer composites. [0003] At present, the main methods for surface modification of carbon nanotubes include electroless...

Claims

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Application Information

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IPC IPC(8): C01B31/00C01B31/02B82B3/00
Inventor 颜红侠宋长文王金合
Owner NORTHWESTERN POLYTECHNICAL UNIV
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