The application of gas phase growth carbon fiber refers to the fibrous carbon produced by high temperature pyrolysis under the action of catalysts such as low carbon hydrocarbons or carbon oxide. Gas phase growth carbon fiber is a kind of irregular short fiber, which uses low carbon hydrocarbon as raw material, electroplating medium superfine particles (catalyst) as crystal nucleus, and thermal analysis in hydrogen and other oxygen bodies.
Although the phenomenon of carbon fiber growth in meteorological hydrocarbons was observed as early as more than 100 years ago, in 1889 proposer T.V and Chambers G . R thermal decomposition of methane gas in iron pot, prepared to be used as carbon fiber of electric filament, and obtained American patent.
Gas phase growth carbon fiber is a kind of irregular short fiber, which uses low carbon hydrocarbon as raw material, electroplating medium superfine particles (catalyst) as crystal nucleus, and thermal analysis in hydrogen and other oxygen bodies.
Japan is a professor of Shanhang Department of National Shenzhou University, who is engaged in the research of carbon fiber for meteorological growth. The first one to study this kind of fiber is the material chemistry laboratory of Nagasaki University, digestive electrical engineering, massachusetts Institute of Technology, etc., which are cooperated with professors from the Ministry of Aeronautics and Astronautics, have also carried out research and development on the application of gas phase growth carbon fiber.
The research content includes the influence of carbon fiber growth conditions on the yield and performance of carbon fiber grown in gas phase in substrates or stainless steel tubes with hydrocarbons as raw materials, hydrogen as carrier gas and catalyst. The gas phase growth carbon fiber with good performance is obtained, and the growth mechanism is inferred through its structural analysis. Other growth mechanism theories were put forward, and 3360 benzene was added as the main raw material in Japan. Hydrogen and other oxygen as gas carrier, electroplate fast compounds as Catalyst, the research goal of carbon fiber growth by gas-free gas phase flow method is to improve carbon fiber productivity, continuously cheaper raw materials and realization process, using laser plasma liquid pulse injection and other technologies to carry out hydrocarbon pyrolysis phase-generated carbon fiber research.
What are the methods for preparing gas phase growth carbon fiber?
The production method of gas phase growth carbon fiber is simpler than other carbon fibers, with rich raw material resources and low cost. There are two methods to prepare gas phase growth carbon fiber. Substrate seeding method and air phase flow method
(1) substrate seeding method
Substrate seeding method is to place the substrate containing catalyst and substrate or catalyst particles in an appropriate position in the reaction tube, then obtain the mixture of load and hydrocarbon at high temperature, and analyze the carbon fiber on the substrate surface.
(2) meteorological flow method
The gas phase flow method is to directly introduce the ternary mixture composed of catalyst, carbide and hydrogen into the high temperature reaction system, and directly analyze carbon fiber in the gas phase.
