摘要
采用气相色谱/质谱联用技术,研究偏二甲肼氧化过程中主要氧化产物的浓度变化规律以及氧气浓度和接触的金属材料对偏二甲肼氧化速率的影响,推测新产生氧化产物的结构。研究结果表明,导致偏二甲肼氧化变黄的氧化产物亚硝基二甲胺是由氧化中间产物二甲胺进一步氧化并与-NO反应转化而来;金属不锈钢和铝材料可加速偏二甲肼的氧化速率,使二甲胺浓度增大;增加供氧浓度,偏二甲肼的氧化速率明显提高,使亚硝基二甲胺的浓度快速增加。
Main oxidation products and their concentration changing characteristics, and the influences of concentration of oxygen and contact metal materials with unsymmetrical dimethylhydrazine （UDMH） on the oxidation speed of UDMH during oxidation process of UDMH are studied by means of GC and MS. The structures of newly produced oxidation products are inferred. The investigation results show that dimethylamine as an intermediate oxidation products of UDMH, can be further oxidized and reacted with - NO to produce N-nitrosodimethylamine,which makes oxidized UDMH turn yellow. Stainless steel and alumumium can accelerate the oxidation speed of UDMH and increase the concentration of dimethylamine. Increasing the concentration of oxygen can increase the oxidation speed of UDMH and the concentration of dimethylamine immediately.
出处
《火炸药学报》
EI
CAS
CSCD
2006年第5期39-41,45,共4页
Chinese Journal of Explosives & Propellants
关键词
分析化学
液体推进剂
偏二甲肼
氧化产物
气相色谱/质谱法
analytical chemistry
liquid propellant
unsymmetrical dimethylhydrazine （UDMH）
oxidation product
gas chromatography（GC）-mass spectrometry（MS）
