Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Печать: 2150-766X
ISSN Онлайн: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2014010355
pages 157-168

PREPARATION AND PROPERTIES OF OCTOGEN-BASED NANOCOMPOSITE PARTICLES

Chongwei An
School of Chemical and Environmental Engineering, North University of China, Taiyuan, Shanxi 030051, P.R. China
Wenjian Guo
Chemical Industry and Ecology Institute, North University of China, Taiyuan, Shanxi, 030051, China
Hequn Li
School of Chemical and Environmental Engineering, North University of China, Taiyuan, Shanxi 030051, P.R. China
Jing-Yu Wang
School of Chemical and Environmental Engineering, North University of China, Taiyuan, Shanxi 030051, P.R. China
Xiao-Heng Geng
Urban and Environmental Science Department, Binzhou University, Binzhou, Shandong, 256600, China

Краткое описание

An inert material, resorcinol formaldehyde (RF), was introduced to prepare octogen (HMX)-based nanocomposite particles by combining sol-gel and spray drying processes. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transformation infrared spectroscopy were used to characterize the samples. Moreover, we determined the impact sensitivity of the samples using a drop hammer apparatus and we analyzed their thermal decomposition by differential scanning calorimetry analysis. The SEM results indicated that the HMX-based nanocomposite particles were spherical in shape and ranged from 1 to 10 µm in size. In the nanocomposite particles, the HMX nanoscale-sized particles were evenly dispersed in the RF. The XRD peaks of the composite particles were much weaker and wider than those of raw HMX. Based on Scherrer's equation, the HMX crystal size obtained from the diffraction peaks at different 2Θ ranged from 8.1 to 28.1 nm. Compared with that of raw HMX, the nanocomposite particles had lower impact sensitivity and higher detonation velocity. Moreover, the nanocomposites had a higher activation energy (E) and pre-exponential factor than raw HMX.