FOX-7在DMSO-EAC混合体系中的结晶热力学  

Crystallization Thermodynamics of FOX⁃7 in DMSO⁃EAC Solvent Mixtures

作　　者：赵鑫华 陈丽珍 王建龙 韩子豪 ZHAO Xin-hua;CHEN Li-zhen;WANG Jian-long;HAN Zi-hao(School of Chemical Engineering and Technology,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学化学工程与技术学院,山西太原030051

出　　处：《含能材料》2020年第9期826-833,I0004,共9页Chinese Journal of Energetic Materials

摘　　要：为了研究1,1-二氨基-2,2-二硝基乙烯(FOX-7)在二甲基亚砜-乙酸乙酯(DMSO-EAC)混合溶剂中的结晶行为,促进FOX-7球形化晶体制备工艺研究,利用激光动态法测定了298.15~333.15 K温度范围内FOX-7在不同体积比DMSO-EAC混合溶剂中的溶解度,建立了溶解度方程,估算了结晶热力学参数,并在DMSO-EAC混合溶剂中进行了降温结晶实验。结果表明,FOX-7在该混合体系溶剂中的溶解度随温度和DMSO含量的增加而增加;所有模型拟合结果良好,其中CNIBS/R-K模型的关联结果最优;在VDMSO∶VEAC=1∶3体系中降温结晶所得晶体形貌规则、呈椭球状且粒度均匀。To facilitate the crystallization of spherical FOX-7,a laser dynamic method was performed to determine the solubility of FOX-7 in the solvent mixtures of DMSO-EAC with different volume ratio in the temperature range of 298.15~333.15 K.The solubility equation was established and the crystallization thermodynamic parameters were estimated.The cooling crystallization experiment was carried out in DMSO-EAC mixed solvent.The results show that the solubility of FOX-7 in mixed solvents increases with increasing temperature and DMSO content.All models fit well with experimental data,of which the CNIBS/R-K model has the best correlation.The crystals of FOX-7 obtained by cooling crystallization in VDMSO∶VEAC=1∶3 system are regular,ellipsoidal and uniform in particle size.

关 键 词：1 1-二氨基-2 2-二硝基乙烯(FOX-7) 激光动态法 溶解度 结晶热力学 降温结晶 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]