The extinguishing properties of aqueous suspensions with carbon nanoparticles (astralenes) used for extinguishment of liquid hydrocarbon flames were investigated. The extinguishment time (τ) was found to decrease by 75–80% with increasing of astralene concentrations (φ) from 0 vol.% to 0.5 vol.%. As the concentration is further increased above 1.0 vol.%, the value of τ also increases. Such changes are caused by the dependence of the latent heat of vaporization and heating rate of suspension to the boiling point on astralene concentration. The effects of nanoparticle concentration and size on nanofluid permittivity were determined. For nanofluids containing 1.0–1.5% astralenes, the permittivity was found to enhance with increasing the distances between nanoparticle agglomerates. Ultimately, these physical processes negatively affect the transport characteristics and extinguishing properties of the suspension.

研究了用于液态烃火焰熄灭的含碳纳米颗粒（阿斯达林）的水悬浮液的灭火性能。发现熄灭时间（τ）从0％（体积）增加到0.5％（vol％）随天冬酰胺浓度（φ）的增加而减少了75–80％。随着浓度进一步增加到1.0 vol。％以上，τ的值也增加了。这种变化是由于汽化潜热和悬浮液的加热速率对沸点的依赖关系而引起的。确定了纳米颗粒浓度和大小对纳米流体介电常数的影响。对于含有1.0％至1.5％的Astralenes的纳米流体，介电常数随纳米颗粒团聚体之间距离的增加而增加。最终，这些物理过程会对悬浮液的传输特性和灭火性能产生负面影响。