FTIR光谱遥测红外药剂的燃烧温度

Combustion Temperature Measurement of Pyrotechnic Composition Using Remote Sensing Fourier Transform Infrared Spectrometry

本文利用遥感FTIR光谱 ,对红外药剂的燃烧特性进行了研究。在分辨率为 4cm-1时 ,收集 470 0～740cm-1波段的光谱。从HF等燃烧产物发射的分子振转基带精细结构的谱线强度分布 ,可以对燃烧温度进行遥感测定 ,并给出了燃烧温度随时间的变化关系 ,实验结果表明燃烧表面附近温度梯度很大 ,存在着急剧的变化温度场。同时也说明 ,在不干扰火焰温度场的情况下 ,利用遥感FTIR光谱对剧烈的、非稳态快速燃烧的火焰温度进行连续实时的遥感测量 ,是一种快速、准确、灵敏度高的测温方法 ,显示了它在燃烧温度测量。

In this paper, combustion characterization of pyrotechnic composition is investigated using a remote sensing Fourier transform infrared spectrometry. The emission spectra have been recorded between 4 700 and 740 cm -1 with a spectral resolution of 4 cm -1.The combustion temperature can be determined remotely from spectral line intensity distribution of the fine structure of the emission fundamental band of gaseous products such as HF. The relationship between combustion temperature and combustion time has been given.Results show that there is a violent mutative temperature field with bigger temperature gradient near combustion surface.It reveals that the method of temperature measurement using remote sensing FTIR for flame temperature of unstable,violent and short time combustion on real time is a rapid,accurate and sensitive technique without interference the flame temperature field.Potential prospects of temperature measurement,gas product concentration measurement and combustion mechanism are also revealed. Corresponding author