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过程工程学报 ›› 2017, Vol. 17 ›› Issue (2): 271-277.DOI: 10.12034/j.issn.1009-606X.216235

• 过程与工艺 • 上一篇    下一篇

高氯酸铵包覆纳米铝粉在CO2气氛中的热反应特性及点火燃烧特性

王启昌,朱宝忠,孙运兰,王婷   

  1. 安徽工业大学能源与环境学院
  • 收稿日期:2016-07-12 修回日期:2016-09-02 出版日期:2017-04-20 发布日期:2017-04-19
  • 通讯作者: 孙运兰 yunlansun@163.com

Thermal Reaction Characteristics and Ignition Combustion Characteristics of Nano-aluminum Powder Coated with Ammonium Perchlorate in Carbon Dioxide

WANG Qi-chang ,ZHU Bao-zhong,SUN Yun-lan, WANG Ting   

  1. School of Energy and Environment, Anhui University of Technology, Ma’anshan, Anhui 243002, China
  • Received:2016-07-12 Revised:2016-09-02 Online:2017-04-20 Published:2017-04-19
  • Contact: SUN Yun-lan yunlansun@163.com

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摘要： 采用热分析仪和可视化管式炉研究了包覆剂高氯酸铵(AP)对纳米铝粉(nAl)在CO2中热反应特性及点火燃烧特性的影响. 结果表明，由于热分析仪及可视化管式炉中升温速率不同导致AP分解过程不同，使nAl的点火燃烧特性有一定差别；升温速率较慢时，包覆AP的nAl着火温度比未包覆nAl升高，但由于AP分解产生的O2能促进nAl反应，所以包覆的nAl增重率大于未包覆的nAl，且随包覆剂浓度升高，样品增重率增大；升温速率较快时，包覆AP的nAl着火温度比未包覆的nAl均有明显降低，包覆10%与15% AP的nAl由于AP剧烈分解对着火影响明显，使着火温度下降约200℃.

关键词: 纳米铝粉, 包覆, 高氯酸铵, 热反应, 点火燃烧

Abstract: The effect of coating agent ammonium perchlorate (AP) on the thermal reaction characteristics and ignition combustion characteristics of nano-aluminum powder (nAl) in CO2 were studied by thermal analysis techniques and visualized tube furnace. The decomposition process of AP is different because there are different heating rates between thermal analysis instrument and visualized tube furnace, so that the ignition combustion characteristics of nAl have a certain difference; At a slow heating rate, the ignition temperature of nAl coated with AP is higher than that of nAl. However, the product O2 which is produced by AP can promote the reaction of nAl, so the mass gain of nAl coated with AP is higher than that of nAl. Also, with the increase of the concentration of coating agent AP, the mass gain of nAl coated with AP increases. At a fast heating rate, the ignition temperature of nAl coated with AP is lower than that of nAl. Especially, for nAl coated with 10% and 15% AP, the ignition temperatures decrease by about 200℃ due to the decomposition of AP in rapid decomposition to have obvious effect on the ignition phenomenon of nAl.

Key words: nano-aluminum powder, coated, ammonium perchlorate, thermal reaction, ignition combustion

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