Solubility of Supercritical Carbon Dioxide in Oblate Spherical Propellants

被引：0
|
作者：
Wu W.-L. [1 ]
Ding Y.-J. [1 ]
Ying S.-J. [1 ]
机构：
[1] School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu
来源：
Ding, Ya-Jun (dyj@njust.edu.cn) | 1965年 / China Ordnance Industry Corporation卷 / 39期
关键词：
Co-solvent; Diffusion coefficient; Double-base oblate spherical propellant; Solubility; Supercritical carbon dioxide;
D O I：
10.3969/j.issn.1000-1093.2018.10.012
中图分类号：
学科分类号：
摘要：
In order to study the solubility of SC-CO2 in double-base propellant, the dissolution and diffusion coefficients of SC-CO2 in oblate spherical propellants with different arc thicknesses are investigated by the static method and the Fick diffusion law, and the effect of co-solvent on the amount of dissolution and diffusion coefficient is studied. The results show that the dissolved amount of SC-CO2 in the double-base oblate spherical propellant increases with the increase in saturation time and is stabilized after 8 h, reaching 16%. It increases with the increase in saturation pressure. However, the dissolved amount of SC-CO2 decreases with the increase in saturation temperature, and the dissolved amount is higher at 40℃. The addition of co-solvent has a positive effect on the increase in dissolved amount of SC-CO2, and the dissolved amount is increased to 22.6%. The thickness of oblate spherical propellants has no effect on the saturated dissolved amount of SC-CO2. The desorption diffusion coefficient under ambient conditions is much larger than the adsorption coefficient under supercritical conditions. The saturated dissolved amount of SC-CO2 reaches 16% without adding co-solvent. After adding co-solvent, the saturated dissolved amount of SC-CO2 reaches at least 22.6%, which is increased by 41.3%. The dissolution of SC-CO2 in oblate spherical propellants can be increased effectively by adjusting the process parameters and adding the co-solvents. © 2018, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1965 / 1970
页数：5
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