Turkevich Leonid A, Fernback Joseph, Dastidar Ashok G, Osterberg Paul
National Institute for Occupational Safety and Health, Division of Applied Research and Technology, 1090 Tusculum Avenue, MS-R7, Cincinnati, OH 45226 USA.
Fauske & Associates, LLC, 16W070 83 Street, Burr Ridge, IL 60527 USA.
Combust Flame. 2016 May;167:218-227. doi: 10.1016/j.combustflame.2016.02.010.
There is a concern that engineered carbon nanoparticles, when manufactured on an industrial scale, will pose an explosion hazard. Explosion testing has been performed on 20 codes of carbonaceous powders. These include several different codes of SWCNTs (single-walled carbon nanotubes), MWCNTs (multi-walled carbon nanotubes) and CNFs (carbon nanofibers), graphene, diamond, fullerene, as well as several different control carbon blacks and graphites. Explosion screening was performed in a 20 L explosion chamber (ASTM E1226 protocol), at a concentration of 500 g/m, using a 5 kJ ignition source. Time traces of overpressure were recorded. Samples typically exhibited overpressures of 5-7 bar, and deflagration index K = V (dP/dt) ~ 10 - 80 bar-m/s, which places these materials in European Dust Explosion Class St-1. There is minimal variation between these different materials. The explosive characteristics of these carbonaceous powders are uncorrelated with primary particle size (BET specific surface area).
有人担心，工程碳纳米颗粒在工业规模生产时会构成爆炸危险。已对20种碳质粉末进行了爆炸测试。这些包括几种不同规格的单壁碳纳米管（SWCNT）、多壁碳纳米管（MWCNT）和碳纳米纤维（CNF）、石墨烯、金刚石、富勒烯，以及几种不同的对照炭黑和石墨。在20升爆炸室中按照ASTM E1226协议进行爆炸筛选，使用5千焦点火源，浓度为500克/立方米。记录超压的时间轨迹。样品通常表现出5 - 7巴的超压，爆燃指数K = V（dP/dt）~ 10 - 80巴·米/秒，这将这些材料归类为欧洲粉尘爆炸St-1级。这些不同材料之间的差异极小。这些碳质粉末的爆炸特性与初级粒径（BET比表面积）无关。
