Open AccessСинтез углеродных волокон при разложении ацетилена и пропан-бутановой смеси в струе плазмы
Author(s) -
М.Б. Шавелкина,
Р.Х. Амиров,
Т.Б. Шаталова,
В.А. Катаржис
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.22.46920.17161
Subject(s) - propane , butane , materials science , acetylene , inert gas , torr , inert , thermal decomposition , analytical chemistry (journal) , jet (fluid) , carbon fibers , chemical engineering , catalysis , chemistry , composite material , organic chemistry , composite number , physics , engineering , thermodynamics
Carbon fibers are prepared during the conversion of acetylene and propane–butane mixture in a jet of the helium and argon plasma without using catalysts. The synthesis is carried out in a plasma jet reactor. The synthesis products are studied by electron microscopy, synchronous thermal analysis and energy dispersive X-ray spectroscopy. The effect of the synthesis parameters on the structure and properties of the carbon fibers prepared in the volume is established. When the propane–butane mixture is decomposed in an inert medium, conditions are found for the synthesis of cylindrical carbon nanofibers of a tortuous shape with a diameter of up to 20 nm and a length-to-diameter ratio of up to 1000. The decomposition of acetylene at 350 Torr produces nanofibers formed by a chain of straight cylinders with a diameter of up to 20 nm, and cylindrical fibers are synthesized in the form of spirals of up to 200 nm in diameter at 150 Torr.