Innovative carbon nanotube synthesis technology of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences

Innovative carbon nanotube synthesis technology by Changchun Yinghua Institute of Chinese Academy of Sciences A method for preparing a carbon nanotube material invented by the research group of Tang Tao, a research group of Changchun Yinghua Institute of Chinese Academy of Sciences, was recently authorized by the US Trademark and Patent Office. So far, the invention-related technology now has 6 Chinese authorized invention patents, one US authorized invention patent, and two other patent applications. These patented technologies have opened up new ways for synthesizing nano-carbon materials, improving the flame retardant properties of polymers and recycling high-value waste polymers. In the invention, polyolefin or recycled polyolefin is used as the carbon source material, a combined catalyst composed of organically modified montmorillonite and supported metal catalyst is added, and melt-mixed in an internal mixer and a twin-screw extruder, and the resulting mixed material passes Combustion method for preparing carbon nanotubes, the process is simple and easy. The main preparation methods of carbon nanotubes are arc method, laser ablation method and vapor deposition method. With the wide application of polymer materials, the effective conversion of polymers into carbon materials has important value in the field of high technology and polymer flame retardancy. Existing waste plastic recycling methods include landfill, incineration, physical and chemical recycling, etc. The invention organically combines the high-efficiency carbonization technology of the polymer with the preparation technology of the nano-carbon material, and can synthesize high-value-added carbon nano-tube materials and at the same time can recycle the waste polyolefin at a high value. At present, the technology has been initially scaled up and can be used for laboratory batch synthesis of carbon nanotubes.

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