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含能材料  2012 

硝酸铷类红外烟火药剂的燃烧性能

DOI: 10.3969/j.issn.1006-9941.2012.06.017

Keywords: 物理化学,红外辐射,硝酸铷,燃烧热,火焰温度,燃烧速度

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Abstract:

研究了以硝酸铷为氧化剂,分别以金属镁粉、镁铝合金粉、钛粉、氢化钛粉、硼为可燃剂,以氟橡胶(FPM)为黏合剂组成的5组烟火药剂的燃烧性能,用DSC分析了药剂的分解过程,测定了燃烧热和燃烧火焰温度,并与REAL程序计算的绝热火焰温度值进行了比较,测试了烟火药剂的近红外(0.7~1.1μm)辐射强度和可见光(0.4~0.7μm)光强。结果表明:含B与Ti的热分解过程较类似;Mg/RbNO3/FPM烟火药剂的燃烧热值最高为4939kJ·kg-1,5组药剂燃烧热顺序为Mg>Al3Mg4>TiH2>Ti>B。Ti/RbNO3/FPM烟火药剂的燃烧火焰温度最高,高于2700℃,实测的燃烧火焰温度比REAL程序计算的理论绝热火焰温度低;TiH2的近红外(0.7~1.1μm)辐射强度与可见光光强之比为1.654,隐身指数较高,有望成为良好的红外照明剂组分。

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