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含能材料  2012 

超临界状态下TNT-RDX-CO2三元体系固液平衡研究

DOI: 10.3969/j.issn.1006-9941.2012.03.009

Keywords: 物理化学,溶解度,相平衡,超临界萃取

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Abstract:

用紫外分光光度计测定了303.0K、308.0K、323.0K、338.0K下,10.0~50.0MPa范围内TNT和RDX混合物在超临界CO2(SC-CO2)流体中的固液平衡数据。分析了压力、温度、RDX和TNT分子间夹带效应(SE)对TNT/RDX/SC-CO2溶解度的影响。结果表明:TNT和RDX在TNT/RDX/SC-CO2三元体系中的溶解度比在TNT/SC-CO2和RDX/SC-CO2中有提高。TNT和RDX的SE值随压力增大先升后降。SE压力转变点,TNT出现在25~28MPa区间,RDX出现在13~20MPa区间。

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