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采用直接抛撒法和多种谱仪技术研究了三乙基铝的爆炸特性及微观机理。光谱研究表明,当三乙基铝与正己烷的体积比增加至1∶2 以后C2 辐射明显增强。过多增加正己烷含量导致混合物贫氧,因而造成燃料的浪费。实验观察到,每次实验后在激波管端盖及离端盖0.8m 范围内的激波管内壁上均匀覆盖着一层白色粉末。还利用OMA谱仪及单色谱仪确定了Al 原子的存在。研究发现,随着正己烷含量的增加,CH 出现时间相比Al 原子出现越来越早。这表明正己烷的反应总是早于三乙基铝的反应,并且随着正己烷含量的增加,正己烷的作用越来越明显。这个结果也是和三乙基铝与正己烷的混合方式相符的。由于三乙基铝总是被正己烷包裹着,抛撒后只有等正己烷反应完才能使三乙基铝裸露出来与氧接触点火
The explosion characteristics and microscopic mechanism of triethylaluminum have been studied by using direct scattering method and multiple spectrometer techniques. Spectroscopic studies show that when the volume ratio of triethylaluminum to n-hexane increased to 1: 2 C2 radiation significantly enhanced. Too much n-hexane increases the oxygen-depleted mixture, resulting in a waste of fuel. It is observed experimentally that a white powder is uniformly covered on the inner wall of the shock tube within 0.8m of the shock tube end cap and the end cap after each experiment. The presence of Al atoms was also confirmed using OMA spectroscopy and single-color spectroscopy. The study found that with the increase of n-hexane content, CH appears earlier and earlier than Al atom. This indicates that the reaction of n-hexane is always earlier than the reaction of triethylaluminum and the effect of n-hexane becomes more and more obvious as the n-hexane content increases. This result is also consistent with the mixing of triethylaluminum and n-hexane. Since triethylaluminum is always surrounded by n-hexane, it will only expose triethylaluminum to be exposed to oxygen after being thrown off