Thermal decomposition and combustion performance of the organic-inorganic hybrid crystal structure oxidant DAN-2
Qing-Xia Li,
Er-Hai An,
Qing-Feng Qin,
Jing-Hao Guo,
Zi-Jun Fan,
Sheng-Nan Shi,
Peng Deng,
Xiong Cao
Affiliations
Qing-Xia Li
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China; Science and Technology on Applied Physical Chemistry Laboratory, Xi'an 710061, PR China
Er-Hai An
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China
Qing-Feng Qin
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China
Jing-Hao Guo
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China
Zi-Jun Fan
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China
Sheng-Nan Shi
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China
Peng Deng
Science and Technology on Applied Physical Chemistry Laboratory, Xi'an 710061, PR China; Corresponding authors.
Xiong Cao
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China; Corresponding authors.
In this paper, we investigated the potential use of a new organic-inorganic hybrid crystal structure based on KNO3 in ignition compositions. H2dabco[K(NO3)3] (DAN-2) with organic-inorganic hybrid crystal structure is synthesized through intermolecular assembly technology. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) were used to detect the crystal morphology, structure and molecular structure of DAN-2, which has a regular cubic structure. Experimental data were obtained using thermogravimetric/differential scanning calorimetry (TG-DSC), closed bomb test and high-speed photography, which were then used to study and analyze the thermal decomposition properties and combustion properties of DAN-2. The initial thermal decomposition temperature of DAN-2 was low (194 °C) and the activation energy of the thermal decomposition was 154 kJ/mol. Possible thermal decomposition mechanisms are further discussed and proposed. This research pushed forward the application of organic-inorganic hybrid crystal structure oxidant DAN-2 in ignition system.
