摘要
采用TG-DTA研究了镁粉、硝酸钠、氟橡胶以及混合组分的热分解过程,揭示了高含量镁粉/硝酸钠体系的凝聚相热分解反应机理。单组分的热分析曲线显示,镁粉熔化后有一个大的失重过程,硝酸钠的分解可分为不同的阶段,氟橡胶在较窄的温度范围内发生完全失重。混合组分的热分析结果表明,镁粉与氟橡胶之间也存在着相互作用,硝酸钠与氟橡胶的分解产物之间也有相互反应;镁/硝酸钠体系的快速分解温度发生在535℃附近,添加氟橡胶的镁/硝酸钠体系的分解温度发生在380℃附近。
The thermal decomposition processes of magnesium, sodium nitrate, viton A and their mixing components were studied by differential thermal analysis （DTA） and thermogravimetry （TG） in order to obtain the condensed phase reaction mechanism of magnesium/sodium nitrate system. DTA and TG results showed that magnesium had a large mass loss after melting, the decomposition of sodium nitrate included different stages, and viton A decomposed completely in the narrow range of temperature. The thermal analysis for the mixtures indicated that the decomposition products of the viton A might react with magnesium, and with the decomposition products of sodium nitrate. The results suggest that fast decomposition of Mg/NaNO3happened at 535℃, while it happened at about 380℃ after adding viton A to the system.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2009年第4期56-59,共4页
Chinese Journal of Explosives & Propellants
关键词
分析化学
富燃料推进剂
硝酸钠
氟橡胶
热分析
analytical chemistry
fuel rich propellant
sodium nitrate
viton A
thermal analysis
