A5022560053- Energetic Materials and Combustion
- Thermal and Kinetic Analysis
- Combustion and Detonation Processes
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Fire dynamics and safety research
- Synthesis of Tetrazole Derivatives
- Synthesis and Characterization of Heterocyclic Compounds
- Fire Detection and Safety Systems
- Rocket and propulsion systems research
- Flame retardant materials and properties
- Safety and Risk Management
- Crystal structures of chemical compounds
- Fire effects on ecosystems
- Crystallography and molecular interactions
- Advanced Battery Technologies Research
- Synthesis and Reactivity of Heterocycles
- Environmental and Industrial Safety
- Silicone and Siloxane Chemistry
- Surface Modification and Superhydrophobicity
- Electromagnetic Launch and Propulsion Technology
- Additive Manufacturing and 3D Printing Technologies
- Combustion and flame dynamics
- Methane Hydrates and Related Phenomena
- Astro and Planetary Science
Beijing Institute of Technology
2014-2023
Nitrogen-rich compounds are a kind of new type energetic material and have good application prospects. They generally high densities, positive heats formation, thermal stability, series excellent properties. Nitro-rich salts in which cations anions contain tetrazole rings possess more N-N C-N bonds. These can help the achieve better performance. Their distinct advantages make them attractive for applications gas generators high-energy-density materials as propellant additives.
Summary The relationship between the particle size distribution and extinguishing effectiveness of new K‐powder fire agent has been studied experimentally, to explore reason great efficiency exhibited by on Class B (liquid fuel fire). results experiment showed that increased along with decrease distribution. In addition, a sharp discontinuity appeared around limiting size, about 40 μm. powder below μm highly effective minimum concentration C xr = 23 g·m −3 , while above little efficiency....
Up to now, the research studies about 5-aminotetrazole (5-AT) gas generators are still not complete. In this work, ten based on 5-AT with different ordinary oxidants were designed. At same time, azodicarbonamide (ADC), a current gas-generating material, also designed, which serves as contrast formulas of 5-AT. The all in proportion. specific volume, production rate, and combustion temperature these measured calculated. conclusion, 5-AT/KClO4/Fe2O3/MnO2 formula has high acceptable (1466.07...
1,1′-Diamino-5,5′-azotetrazole, which was obtained from the reaction of 1,5-diaminotetrazole with acetone, sodium dichloroisocyanurate and acetic acid respectively, well characterized. Its structure confirmed by X-ray crystallography thermal stability explosive performance were also investigated.
Bis(1,5-diamino-4-methyl-tetrazolium)hydrazinetetrazolate (BMDATHBT) was synthesized for the first time from 1,5-diamino-4-methyl-tetrazolium sulfate (MDATS) and hydrazino bitetrazole barium (HBTBa·5H<sub>2</sub>O) as raw materials.
Summary A novel hot aerosol extinguishing agent (HAEA), which is the combination of pyrotechnics and flame retardant technology, was found to have great efficiency in Class B fires. mixture P 3 N 5 , referred as P90x, chosen reductant, phase stabilized ammonium nitrate oxidant. This paper describes a study effectiveness this n‐heptane fires (ie, fires). We determined that best 15 g/m for fires, four times more efficient than traditional agent. The increases mass fraction P90x rises. also...
Suppression of forest fires has been one the important research directions in field fire safety, ammonium phosphate and its mixture inhibitors commonly used solid combustible fires, for scenarios, also a good suppression effectiveness, inexpensive easy to store, but current is main inhibitors. However, there are few studies on interaction between fires. In this paper, facilitate study, we enter previous ideas gas reduce scale object, establish small-sized simplified flame model suppressing...
In order to study the influence of environmental humidity on thermal decomposition pyrotechnic compositions, this experiment has been set up with artificial simulation environment high humidity. The analysis experiments have done by using integrated analyzer. Thermal curves in conditions and normal obtained. And starting temperature, peak as well change rules activation energy reaction gotten, which shows that safety compositions is lower.
The synthesis mechanism of 3-nitro-4-(tetrazol-5-yl)furazan (NTZF) was calculated by Gaussian 09 for the first time, and NTZF successfully synthesized based on theoretical design.
Abstract 4,5‐Bis(5‐tetrazolyl)‐1,2,3‐triazole (BTT) was synthesized by a new method. Its structure characterized IR and 13 C NMR spectroscopy elemental analysis (EA). The thermal stability of BTT investigated TG‐DSC technique. kinetic parameters including activation energy pro‐exponential factor were calculated Kissinger equation. combustion heat, detonation products, hygroscopicity, impact, friction sensitivity also measured. formation pressure, velocity calculated. has high pressure ( P...
Abstract The synthesis and characterization of the 4,5‐dicyano‐2 H ‐1,2,3‐triazole anion in its 5‐aminotetrazole, 1,5‐diaminotetrazole, 1,5‐diamino‐4‐methyl‐tetrazole salts are reported. All compounds were characterized by IR, 1 NMR, 13 C NMR spectroscopy, as well elemental analyses. Their thermal decompositions investigated TG‐DSC. densities, combustion heats, sensitivity properties tested. Additionally, enthalpies formation, detonation pressures, velocities, heats calculated. have...