FULLERENE-CONTAINING CARBON BLACK MANUFACTURE METHOD

FIELD: carbon materials. ^ SUBSTANCE: reaction space is evacuated and filled with helium to pressure 0.1-0.4 atm, coaxial graphite electrodes are brought together to ignite electric arc between them, and graphite is evaporated at voltage 40-60 v and current intensity 250-400 A. Simultaneously, elect...

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Main Authors SOROKA A.I, GERASIMOV V.I, CHARYKOV N.A, LOSEV G.M, NEKRASOV K.V, NIKONOV JU.A, ABDUGUEV R.M, ALEKHIN O.S
Format Patent
LanguageEnglish
Russian
Published 20.07.2005
Edition7
Subjects
ADHESIVES
CHEMISTRY
COMPOUNDS THEREOF
DYES
INORGANIC CHEMISTRY
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-METALLIC ELEMENTS
PAINTS
POLISHES
PREPARATION OF CARBON BLACK
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Summary:FIELD: carbon materials. ^ SUBSTANCE: reaction space is evacuated and filled with helium to pressure 0.1-0.4 atm, coaxial graphite electrodes are brought together to ignite electric arc between them, and graphite is evaporated at voltage 40-60 v and current intensity 250-400 A. Simultaneously, electrodes are continuously affected by video pulse packets characterized by duration 2.10-4-2.10-3 s, relative pulse duration in packet 10-100, and power 1-15 W. Resulting products are moved in helium flow and precipitated in carbon black collector in the form of fullerene-containing carbon black. To remove carbon black from inner surfaces of working chamber and carbon black collector, the surfaces are affected by alternate-polarity pulses with repetition frequency 50-500 Hz and power 1-10 W. To remove fragments of destroyed graphite rods and cathode deposit scoria from chamber space to bottom part of working chamber, pulse magnetic field with frequency 3-15 Hz and magnetic induction 0.05-0.1 Tl. ^ EFFECT: increased content of fullerenes in carbon black and reduced power consumption. ^ 3 cl
Bibliography:Application Number: RU20040102068