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Title: Desensitizing nano powders to electrostatic discharge ignition

Electrostatic discharge (ESD) is a main cause for ignition in powder media ranging from grain silos to fireworks. Nanoscale particles are orders of magnitude more ESD ignition sensitive than their micron scale counterparts. This study shows that at least 13 vol. % carbon nanotubes (CNT) added to nano-aluminum and nano-copper oxide particles (nAl + CuO) eliminates ESD ignition sensitivity. The CNT act as a conduit for electric energy and directs electric charge through the powder to desensitize the reactive mixture to ignition. For nanoparticles, the required CNT concentration for desensitizing ESD ignition acts as a diluent to quench energy propagation.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [2]
  1. Texas Tech Univ., Lubbock, TX (United States). Dept. of Mechanical Engineering
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
OSTI Identifier:
1184719
Report Number(s):
INL/JOU--15-34263
Journal ID: ISSN 0304-3886; TRN: US1500203
DOE Contract Number:
AC07-05ID14517; W911NF-11-1-0439
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Electrostatics; Journal Volume: 76; Journal Issue: C
Publisher:
Elsevier
Research Org:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRIC DISCHARGES; COPPER OXIDES; NANOPARTICLES; IGNITION; CARBON NANOTUBES; POWDERS; ALUMINIUM; MIXTURES; ABUNDANCE; SENSITIVITY ELECTROSTATIC DISCHARGE; THERMITES; ELECTRICAL CONDUCTIVITY