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含能材料  2015 

盐酸羟胺和N-甲基羟胺盐酸盐的自催化分解特性

DOI: 10.11943/j.issn.1006-9941.2015.11.020

Keywords: 盐酸羟胺(HH) N-甲基羟胺盐酸盐(NMHH) 热分解 自催化 差示扫描量热(DSC) 绝热加速量热(ARC)

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Abstract:

采用等温差示扫描量热(DSC)和中断回扫法(动态DSC)以及绝热加速量热法(ARC), 鉴别盐酸羟胺(HH)和N-甲基羟胺盐酸盐(NMHH)的热分解是否具有自催化分解特性, 分析二者的热分解危险性。动态DSC及等温DSC结果均表明:HH和NMHH的热分解均具有自催化分解特性; 10 ℃·min-1温升速率下, HH和NMHH的放热量分别为2284.85 J·g-1和2188.41 J·g-1, 放热量较大。ARC结果显示:HH和NMHH起始分解温度分别为110.6 ℃和90.7 ℃, 热分解均在30 min内分解完全, 最大温升速率分别达到193.4 ℃·min-1和218.9 ℃·min-1, 热分解剧烈。对确认有自催化分解特性的HH、NMHH、三硝基甲苯(TNT)、奥克托今(HMX)、黑索今(RDX)和过氧化苯甲酰(BPO), 以及确认不具有自催化分解特性的过氧化苯甲酸叔丁酯(TBPB)、硝酸异辛酯(EHN)和过氧化二叔丁基(DTBP)的ARC数据对比分析, 发现非自催化分解反应从检测到放热至最大温升速率的时间(t0-max)均远长于自催化分解反应对应时间, 且热修正系数变化对该规律不产生影响, 由此判断可以采用绝热量热数据t0-max鉴别物质热分解是否具有自催化分解特性

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