Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Potential explosion hazard of carbonaceous nanoparticles: Explosion parameters of selected materials
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 ∼101–102 g/m3, 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 KSt ∼200 bar-m/s, borderline St-1/St-2. We estimate MIE ∼102–103 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). MITcloud > 550 °C, comparable to that of the coals and carbon blacks.
Potential explosion hazard of carbonaceous nanoparticles: Explosion parameters of selected materials
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 ∼101–102 g/m3, 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 KSt ∼200 bar-m/s, borderline St-1/St-2. We estimate MIE ∼102–103 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). MITcloud > 550 °C, comparable to that of the coals and carbon blacks.
Potential explosion hazard of carbonaceous nanoparticles: Explosion parameters of selected materials
Turkevich, Leonid A. (Autor:in) / Dastidar, Ashok G. (Autor:in) / Hachmeister, Zachary (Autor:in) / Lim, Michael (Autor:in)
Journal of Hazardous Materials ; 295 ; 97-103
2015
7 Seiten, 44 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Conference Proceedings | 1992
Explosion hazard to buildings and design load parameters
| British Library Conference Proceedings | 2000
Are optical beams an explosion hazard?
| Tema Archiv | 1997
Explosion Hazard of Airborne Activated Carbon
| British Library Online Contents | 1999
Dust explosion hazard considerations for materials handling plants and processes
| Tema Archiv | 2000