高效碘化银焰火剂及其成冰性能的研究  

THE HIGH EFFICIENT AgI PYROTECHNICS AND THEIR ICE NUCLEATING PROPERTIES

作　　者：酆大雄[1] 陈汝珍[1] 蒋耿旺[1] 罗秉和 崔云山 

机构地区：[1]中国气象科学研究院,北京理工大学化学与材料学院

出　　处：《气象学报》1995年第1期82-90,共9页Acta Meteorologica Sinica

基　　金：非教育系统出国人员科技活动项目

摘　　要：介绍了新研制的两种高效碘化银焰剂ＢＲ－８８－５和ＢＲ－９１－Ｙ。据云室检测，它们的成核率在—７．５——２０℃时均可达到１０１５／ｇＡｇＩ，其中ＢＲ－９１－Ｙ焰剂具有更高的核化速率。两种按国外配方制作的焰剂也在同样条件下进行了测试对比。对焰剂燃烧产生的气溶胶作了物理化学性质检测，Ｘ光衍射分析表明，ＢＲ－９１－Ｙ焰剂产生的气溶胶中ＡｇＩ仍然保持六方晶系，其点阵参数比ＡｇＩ本身及其他ＡｇＩ复合核更接近于冰。结合其他检测，讨论了新焰剂具有优良性能的原因。he idea and procedure for developing high efficient AgI pyrotechnics used in weather modification are given in this paper. Two formulations (BR-88-5 and BR-91-Y) of pyrotechnic with high nucleating effectiveness have been obtained after a number of screen tests carried out in 2m3 cloud chamber. The effectiveness can reach up to 1015/g AgI in the temperature range of-7. 5--20℃ and the nucleating rate is very high for BR-91-Y. The foreign pyrotechnics were made according to the given formulations of Silverspare (USSR)and TB-1 (USA), their ice nucleating properties have also been tested in the same chamber for comparison with the new pyrotechnics. The aerosols produced by the new pyrotechnics as the hexagonal crystal form of AgI have been identified by the X-ray powder diffraction analysis and proved to have the closest match to ice.

关 键 词：人工冰核 碘化银焰剂 成冰性能 

分 类 号：P48[天文地球—大气科学及气象学]