Laser ignitibility of insensitive secondary explosive 1,1-diamino-2,2-dinitroethene (FOX-7)
| Autor: | Xiao Fang, Warren G McLuckie |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Laser ignition
Environmental Engineering Materials science Explosive material Health Toxicology and Mutagenesis Physics::Optics Combustion law.invention FOX-7 chemistry.chemical_compound Optics Explosive Agents Soot Carbon black Physics::Plasma Physics law Environmental Chemistry Insensitive explosive Physics::Atomic Physics Laser power scaling Physics::Chemical Physics Waste Management and Disposal business.industry Lasers Nitro Compounds Laser Pollution Ignition system chemistry Optical sensitizer Continuous wave business |
| Zdroj: | Journal of Hazardous Materials. 285:375-382 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2014.12.006 |
| Popis: | An experimental investigation into laser ignitibility of insensitive secondary explosives, 1,1-diamino-2,2-dinitroethene (FOX-7) has been carried out, using a diode laser of continuous wave at the laser wavelength of 974 nm. The direct optical ignition of an insensitive explosive will add more safety features to insensitive munitions (IM) or explosive devices. In this study, effects of laser parameters on the ignitibility were analysed in terms of laser ignition threshold, the times to initiate the ignition and full combustion, and burning sustainability. The results have shown that carbon black (CB) as an optical sensitizer is compatible with FOX-7, and significantly enhances laser ignitibility of the explosive when a small amount of CB is uniformly doped in FOX-7. The delay times for ignition and subsequent development of sustainable burning of the material are mainly determined by ignition laser power, although the other laser parameters have effects. The minimum laser power required to ignite the optically sensitized FOX-7 was found below 10 W and a fast ignition was initiated in as short as 70 μs by a laser power of 40 W. Also the effect of the mixture uniformity of FOX-7/CB on laser ignition performance was evaluated in this study. |
| Databáze: | OpenAIRE |
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