摘要
研究了入射激波作用下平均粒径75 nm左右纳米铝粉与环氧丙烷快速反应中的热学特征。用光谱技术测定入射激波作用下纳米铝粉在环氧丙烷快速反应的点火延迟时间约为8μs;利用标定的ICCD光学系统采集到的A lO(B2Σ+-X2Σ+)光谱数据,计算纳米铝粉反应温度约为3189 K。对反应生成物的形貌特征进行了研究,测试结果表明:反应产物多为球状颗粒,部分为絮状和针状,其平均粒径约为70 nm,小于反应前纳米铝粉的平均粒径,粒径明显减小是烧结塌陷致密所致;少部分产物粒径大于100 nm,粒径增大是反应物凝聚所致。
The thermal behaviors in the incident shock waves of aluminum nano-particles with average diameter about 75 nm reacting with propylene oxide were studied. The ignition delay time （about 8 μs） of aluminum nano-particles reacting with propylene oxide in the incident shock wave, was experimentslly investigated by spectral technology. The reacting temperature was determined to be 3189 K with AlO（B^2∑^＋ -X^2∑^＋ ） strength obtained by the calibrated ICCD. The morphology of the products was studied by the scanning electron microscopy（SEM） image. The results indicate that the reaction products consist mainly of spherical particles. The average diameter is about 70 nm for the sintered products, while a small part of the products are larger than 100 nm as the agglomerating products.
出处
《含能材料》
EI
CAS
CSCD
2008年第1期5-8,共4页
Chinese Journal of Energetic Materials
基金
西安科技大学培育基金资助(200644)
关键词
物理化学
纳米铝粉
点火
快速反应
光谱
温度
physical chemistry
aluminum nano-particle
ignition
fast reaction
emitting spectra
temperature
