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Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
Published on: July 25, 2014
[Remote passive detection of flame temperature of solid propellant adulterating nanoparticles]
Li-ming Zhang1, Lin Zhang, Yan Li
1Laboratory of Advanced Spectroscopy, Nanjing University of Science and Technology, Nanjing 210014, China.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|July 13, 2006
Summary
Flame temperatures of solid propellants with nano-scale and normal metal oxides were measured using FTIR. Results showed no significant flame temperature difference between propellants with or without nano-scale metal oxide additives.
Area of Science:
- Combustion science
- Materials science
- Spectroscopy
Context:
- Solid propellants containing nitrocellulose and nitroglycerin are crucial energetic materials.
- The addition of metal oxides, both nano-scale and normal-sized, is investigated for their effect on propellant performance.
- Understanding flame temperature is vital for predicting and controlling combustion behavior.
Purpose:
- To measure and compare the flame temperatures of solid propellants with and without nano-scale metal oxide additives (CuO, Fe2O3, NiO).
- To evaluate the influence of particle size (nano-scale vs. normal) of metal oxide adulterants on flame temperature.
- To assess the overall impact of metal oxide adulterations on the combustion characteristics of nitrocellulose-based propellants.
Summary:
- Passive remote sensing Fourier Transform Infrared (FTIR) spectroscopy was employed to measure flame temperatures.
- Flame temperatures were determined by analyzing the emission fundamental band of H2O at 2.75 micrometers.
- Solid propellants adulterated with nano-scale CuO, Fe2O3, and NiO exhibited flame temperatures of 3089 K, 3193 K, and 3183 K, respectively.
Impact:
- The study indicates that nano-scale metal oxide additives do not significantly alter the flame temperature of these solid propellants compared to normal-sized particles or unadulterated propellants.
- This finding suggests that particle size of these specific metal oxides may not be a primary factor in modulating flame temperature in this propellant system.
- Provides valuable data for propellant formulation and performance prediction, highlighting the limited impact of nano-scale metal oxides on flame temperature.
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