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含能材料  2014 

偶氮四唑胍盐的热分解机理

DOI: 10.3969/j.issn.1006-9941.2014.01.008

Keywords: 物理化学,偶氮四唑胍盐,热分解,分解机理,热裂解-色谱-质谱,固体原位池-红外

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Abstract:

采用热重分析(TG),差示扫描量热法(DSC),固体原位池/红外和质谱(直接进样和热裂解-色谱-质谱联用方式)研究了偶氮四唑胍(GZT)的热分解行为,凝聚相产物和气相产物的变化,提出了GZT的热分解机理。结果表明,GZT分解失重的第一阶段由偶氮四唑的放热分解反应和胍分解的吸热过程构成。在单独热作用下,GZT首先发生质子转移形成偶氮四唑和胍,然后分别分解。偶氮四唑的四唑环经过开环反应,可能形成中间产物叠氮四唑(CHN7),最终生成三聚氰胺和叠氮铵等高沸点物质。在离子源轰击作用下除了四唑环开环解离外,C—Nazo也会发生断裂,进而裂解。

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