Potential Explosion Hazard of Carbonaceous Nanoparticles: Explosion Parameters of Selected Materials
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Potential Explosion Hazard of Carbonaceous Nanoparticles: Explosion Parameters of Selected Materials

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Details:

  • Alternative Title:
    J Hazard Mater
  • Personal Author:
  • Description:
    Following a previous explosion screening study, we have conducted concentration and ignition energy scans on several carbonaceous nanopowders: fullerene, SWCNT, carbon black, MWCNT, graphene, CNF, and graphite. We have measured minimum explosive concentration (MEC), minimum ignition energy (MIE), and minimum ignition temperature (MITcloud) for these materials. The nanocarbons exhibit MEC ~10(1)-10(2) g/m(3), comparable to the MEC for coals and for fine particle carbon blacks and graphites. The nanocarbons are confirmed mainly to be in the St-1 explosion class, with fullerene, at K(St) ~200 bar-m/s, borderline St-1/St-2. We estimate MIE ~ 10(2)-10(3) J, an order of magnitude higher than the MIE for coals but an order of magnitude lower than the MIE for fine particle graphites. While the explosion severity of the nanocarbons is comparable to that of the coals, their explosion susceptibility (ease of ignition) is significantly less (i.e., the nanocarbons have higher MIEs than do the coals); by contrast, the nanocarbons exhibit similar explosion severity to the graphites but enhanced explosion susceptibility (i.e., the nanocarbons have lower MIEs than do the graphites). MIT(cloud) > 550 °C, comparable to that of the coals and carbon blacks.
  • Subjects:
  • Source:
    J Hazard Mater. 295:97-103.
  • Pubmed ID:
    25913651
  • Pubmed Central ID:
    PMC4599873
  • Document Type:
    Journal Article
  • Funding:
    CC999999/Intramural CDC HHS/United States
  • Volume:
    295
  • Collection(s):
  • Main Document Checksum:
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