Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
ACS Nano. 2009 Dec 22;3(12):3945-54. doi: 10.1021/nn901006w.
We have compared the combustion of the monopropellant nitromethane with that of nitromethane containing colloidal particles of functionalized graphene sheets or metal hydroxides. The linear steady-state burning rates of the monopropellant and colloidal suspensions were determined at room temperature, under a range of pressures (3.35-14.4 MPa) using argon as a pressurizing fluid. The ignition temperatures were lowered and burning rates increased for the colloidal suspensions compared to those of the liquid monopropellant alone, with the graphene sheet suspension having significantly greater burning rates (i.e., greater than 175%). The relative change in burning rate from neat nitromethane increased with increasing concentrations of fuel additives and decreased with increasing pressure until at high pressures no enhancement was found.
我们比较了含有官能化石墨烯片或金属氢氧化物胶体颗粒的单组元推进剂硝甲烷的燃烧与硝甲烷的燃烧。在室温下，使用氩气作为加压流体，在 3.35-14.4 MPa 的压力范围内，确定了单组元和胶体悬浮液的线性稳态燃烧速率。与纯液体单组元相比，胶体悬浮液的点火温度降低，燃烧速率提高，石墨烯片悬浮液的燃烧速率显著提高（即大于 175%）。从纯硝甲烷的燃烧速率的相对变化随着燃料添加剂浓度的增加而增加，并随着压力的增加而减小，直到在高压下没有发现增强。
