气相色谱/质谱联用分析液体推进剂偏二甲肼组分

Analysis of Components of the Unsymmetrical Dimethylhydrazine in Liquid Propellants by Gas Chromatography-Mass Spectrometry

采用气相色谱 /质谱法分析液体推进剂偏二甲肼所含组分 ,研究组分的色谱保留性质 ,质谱裂解规律 ,并分析了各组分对推进剂比推力的影响。结果表明 ,液体推进剂偏二甲肼中含有水、偏腙、二甲胺和乙醛二甲基腙等杂质 ,除二甲胺外 ,其余组分可降低推进剂的比推力。

The components of the unsymmetrical dimethylhydrazine (UDMH) in liquid propellants were analyzed by gas chromatography-mass spectrometry . The retention behavior of the chromatography and the cleavage mechanism of the mass spetra of components were studied . And the influence of each component on specific impulse of the propellant was analyzed .The result showed that the UDMH in liquid propellant contains impurities of water , unsymhydrazone ,dimethylamine and acetaldehyde dimethylhydrazone etc.Except for dimethylamine , other impurities will reduce the specific impulse of the propellant .