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Niu H.,Beijing Institute of Technology | Chen S.,Beijing Institute of Technology | Jin S.,Beijing Institute of Technology | Li L.,Beijing Institute of Technology | And 4 more authors.
Journal of Thermal Analysis and Calorimetry | Year: 2016

Thermal decomposition study of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) was investigated by using TG–DTG and TG-IR-MS and found that N2, N2O, NH3 and H2O were the main products during the decomposition process. The kinetic parameters (Ea = 138.96 kJ mol−1 and A = 1012.93 s−1) for thermal decomposition reaction of TKX-50 were obtained from DSC profile by differential method and integral method, and the nonisothermal kinetic equation of the exothermic process was (Formula presented.) suggesting that the main exothermic decomposition reaction mechanism of TKX-50 was classified as Avrami–Erofeev equation. In addition, the theoretical detonation velocity (D = 8804 m/s) of TKX-50 at 298.15 K was calculated by a simple method. Finally, the safety parameters of TKX-50 (25 kg) including time to maximum rate under adiabatic conditions and self-accelerating decomposition temperature were calculated to be 142.12 and 129.01 °C by using AKTS software. © 2016 Akadémiai Kiadó, Budapest, Hungary Source


Wang X.-J.,Research Institute of Gansu Yinguang Chemical Industry Group | Lu Z.-Y.,Research Institute of Gansu Yinguang Chemical Industry Group | Wang J.-L.,North University of China | Shang F.-Q.,Research Institute of Gansu Yinguang Chemical Industry Group | And 3 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2012

1-Methy-4, 5-dinitroimidazole(4, 5-MDNI) was prepared. The single crystal of 4, 5-MDNI was cultivated. The single crystal structure was determined by a X-ray diffractometer. The results show that the crystal is orthorhombic, space group Pna2(1)/n with crystal parameters of: a=0.8412(2) nm, b=1.2646(1) nm, c=0.6563(1) nm, V=0.6982(3) nm 3, Z=4, D c=1.637 g·cm -3, μ=0.15 mm -1 and F(000)=352. The impact and friction insenstitvity of 4, 5-MDNI were tested by GJB772-1997 method. 4, 5-MDNI is insensitive to impact and friction and close to TATB. Source


Ren C.,North University of China | Wang X.-J.,Research Institute of Gansu Yinguang Chemical Industry Group | Li Y.-X.,North University of China | Wang J.-L.,North University of China | Cao D.-L.,North University of China
Xiandai Huagong/Modern Chemical Industry | Year: 2015

The structure and classification of graphene composites including graphene-nanoparticle composites, graphene-polymer composites and graphene-carbon based composites are reviewed. The applications of these graphene composites in the field of catalysis, electrochemistry, biological medicine and energetic materials are briefly introduced as well. ©, 2014, China National Chemical Information Center. All right reserved. Source


Zhang C.,Beijing Institute of Technology | Jin S.,Beijing Institute of Technology | Chen S.,Beijing Institute of Technology | Zhang Y.,Beijing Institute of Technology | And 3 more authors.
Journal of Chemical and Engineering Data | Year: 2016

The solubility of newly insensitive energetic material dihydroxylammonium 5,5′-bis(tetrazole)-1,1′-diolate (TKX-50) was measured in ethyl acetate, ethanol, deionized water, dimethyl fumarate (DMF), formic acid, toluene, and dimethyl sulfoxide (DMSO) between 293.15 and 323.15 K at atmospheric pressure by the gravimetric method, which is increased with an increase of temperature. The order of the solubility is ethyl acetate < ethanol < toluene < deionized water < DMF < formic acid < DMSO. The experimental mole fraction solubility data were correlated with a simple Apleblat equation, showing a good fitting between the experimental data and Apleblat equation. © 2016 American Chemical Society. Source


Wu N.-N.,North University of China | Lu Z.-Y.,Research Institute of Gansu Yinguang Chemical Industry Group | Jin S.-H.,Beijing Institute of Technology | Zhang Z.-Z.,Research Institute of Gansu Yinguang Chemical Industry Group | And 2 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2016

In order to obtain a pressed fitting PBX that has good safety performance, 3-nitro-1, 2, 4-triazol-5-one(NTO) and HMX is used as the base explosive to make NTO/HMX based pressed fitting PBX by water slurry method. Solubility of NTO in water has been determined. The influences of the ratio of water and explosive compound, and agitating rate on the coating effect are studied. The effect of particle size of explosive compound on the impact sensitivity is also investigated. The detonation velocity of PBX has been determined. The result indicates that NTO has high solubility in water. At room temperature, the saturated NTO solution can be used to make molding powder. The optimal technical conditions are 1.6:1 of water and explosive compound ratio (V/M) and 500 r/min of agitating rate. After refining particle size of NTO and HMX, the impact sensitivity is only 15.3%, which is decreased by 43%. The detonation velocity of PBX was 8 200 m/s, which is above 95% of theoretical maximum detonation velocity. © 2016, China National Chemical Information Center. All right reserved. Source

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