A promising TNT alternative 3, 3′-bi(1, 2, 4-oxadiazole)-5, 5′-diylbis(methylene)dinitrate (BOM): thermal behaviors and eutectic characteristics. Issue 44 (14th July 2020)

• Record Type: Journal Article
• Authors: Yang, Xiong; Zhou, Jing; Xing, Xiaoling; Huang, Yafeng; Yan, Zhengfeng; Xue, Qi; Wang, Xiaofeng; Wang, Bozhou
• Is Part Of: RSC advances. Volume 10:Issue 44(2020)
• Page Start: 26425
• Page End: 26432
• Publication Date: 2020-07-14
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra04517a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : 3, 3′-Bi(1, 2, 4-oxadiazole)-5, 5′-diylbis(methylene)dinitrate (BOM) is a liquid phase carrier for melt cast explosives that is expected to replace TNT. Abstract : 3, 3′-Bi(1, 2, 4-oxadiazole)-5, 5′-diylbis(methylene)dinitrate (BOM) is a liquid phase carrier for melt cast explosives that is expected to replace TNT. The combination of a conjugated 1, 2, 4-oxadiazole backbone and nitrate ester groups endows BOM with both good energetic performance and impressive insensitivity. In this paper, the thermal behaviors of BOM were investigated using a TG–DSC synchronous thermal analyzer, proving that BOM is basically non-volatile under heating and melting processes. The apparent activation energy of BOM calculated by the Kissinger method was 158.2 kJ mol −1 at atmospheric pressure, which is higher than that of DNTF at atmospheric pressure and TNT at 2 MPa, indicating good thermal stability at low temperatures. The thermal decomposition mechanism of BOM was studied through both DSC-MS and in situ FTIR technologies. The low eutectic characteristics of BOM and DNTF were also investigated carefully and the best ratio of BOM/DNTF was 40/60 with a melting point at 75.5 °C. Finally, the detonation performances of TNT/HMX, BOM/HMX and BOM/DNTF(40/60)/HMX explosive formulations were calculated, showing that the detonation performances of the latter two formulations were significantly higher than that of TNT/HMX.