Fabrication and characterization of Nano (H2dabco)[K(ClO4)3] molecular Perovskite by ball milling. Issue 4 (1st October 2020)

• Record Type: Journal Article
• Authors: Jia, Qi; Bai, Xueyuan; Zhu, Shaoyong; Cao, Xiong; Deng, Peng; Hu, Lishuang
• Is Part Of: Journal of energetic materials. Volume 38:Issue 4(2020)
• Page Start: 377
• Page End: 385
• Publication Date: 2020-10-01
• Subjects: Molecular perovskite -- (H2dabco)[K(ClO4)3] -- milling -- thermal decomposition -- impact sensitivity; Explosives -- Periodicals; Propellants -- Periodicals; 662.2
• DOI: 10.1080/07370652.2019.1698675
• Languages: English
• ISSNs: 0737-0652

Abstract

ABSTRACT: Nano (H2 dabco)[K(ClO4 )3 ] (DAP-2) were successfully prepared via the milling method. The morphology and structure of the as-obtained sample were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results showed the nano DAP-2 with nearly spherical morphologies have a narrow particle size distribution ranged from 1μm to 2μm. The thermal decomposition properties were investigated by thermogravimetric-differential scanning calorimeter (TG-DSC). The exothermal peak of nano DAP-2 thermal decomposition is 384.5°C decreased by 6.7°C compared with raw DAP-2 (391.2°C). And the apparent activation energy ( E a ) of nano DAP-2 was calculated as 173.346 kJ mol −1 by Kissinger equation, which is lower than raw DAP-2 (177.699 kJ·mol −1 ). Sensitivity study showed that the nano DAP-2 (H50 : 60.63 cm) exhibited lower impact sensitivity than raw DAP-2 (H50 : 36.79 cm). Therefore, this work provides a simple and effective way to improve the thermal decomposition properties and safety performance of molecular perovskite energetic materials.