【摘要】 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更多还原

【Abstract】 The explosion behaviour and micro mechanism of triothylaluminium are successfully studied by direct spray method and spectrograph techniques.The spectrum records show that C 2 radiation enhances when its volume percentage of the mixture increases to 1∶2 .The mixture would become poor of oxygen,if the content of n hexane is too much,the fuel is wasted.A layer of white powder is covered on the inside surface of the shock tube from the end cap to a distance of 0.8m after each test.The aluminium atoms are observed by OMA spectrograph and monochromater.It is found that the time of appearance of CH is more earlier than that of Al atom and the eailier time increases with the increase of the n hexane content.It is demonstrated that the reaction of n hexane is earlier than that of triothylaluminium and the effect of n hexane is more obviours with the increase of n hexane content.These results are in accord with the mode for the mixture of triothylaluminium and n hexane.The triothylaluminium is covered by n hexane.Naked triothylaluminium may react with n hexane after it has reacted.更多还原