文献类型：期刊文献

中文题名：超临界CO_2GAS沉析HMX制细过程的影响因素

英文题名：Factors Affecting Particle Size in Supercritical CO_2 Antisolvent Precipitation HMX

作者：蔡建国[1];邓修[1]

机构：[1]华东理工大学化学工程研究所,上海200237

年份：2003

卷号：26

期号：4

起止页码：71

中文期刊名：火炸药学报

外文期刊名：Chinese Journal of Explosives & Propellants

收录：CSTPCD;;Scopus;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：超临界流体;GAS沉析;HMX;影响因素;颗粒度

外文关键词：supercritical fluid; GAS precipitation; HMX; effect factor; particle size

摘要：研究了超临界CO2GAS沉析丙酮溶液中HMX的过程压力、温度、溶液初始浓度和溶液的膨胀速度及影响晶体粒度的因素。结果表明,压力增加,沉析颗粒的平均粒度减小;温度控制沉析晶体的晶型,对颗粒度的影响相对较小,温度增加,沉析平均粒度略有增加;溶液初始浓度对平均粒度的影响相对较大,膨胀速度亦是影响粒度及其分布的一个因素。快速膨胀溶液,并使过饱和度足够大,使过饱和度主要消耗在成核上,可得到颗粒小、分布窄的HMX颗粒。
The precipitation of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical CO2 antisolvent and the factors affecting particle size were studied. The results show that the average particle size is decreased with the increasing of pressure. The temperature is the major reason that it cause to form α-HMX, and the average particle size is slightly increased with the increasing of temperature. As compared with pressure and temperature, the average particle size is sensitive to initial feed concentration of HMX, and the increasing of concentration will cause the increasing of particle size. The expansion speed is also a factor affecting the particle size and size distribution. The microparticle of HMX with narrow size distribution is obtained when the solution is expanded rapidly and the supersaturation ratio is consumed by mass nucleation.