title: Ultrasonic approach to the synthesis of HMX@TATB core-shell microparticles with improved mechanical sensitivity.
abstract: To improve the safety of sensitive explosive HMX while maintaining explosion performance, a moderately powerful but insensitive explosive TATB was used to coat HMX microparticles via a facile ultrasonic method. By using Estane as surface modifier and nano-sized TATB as the shell layer, the HMX@TATB core-shell microparticles with a monodisperse size and compact shell structure were successfully constructed. Both scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) results confirmed the formation of perfect core-shell structured composites. Based on a systematic and comparative study of the effect of experimental conditions, a possible formation mechanism of core-shell structure was proposed in detail. Moreover, the perfect core-shell HMX@TATB microparticles exhibited a unique thermal behavior and significantly improved mechanical sensitivity compared with that of the physical mixture.
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China.
authors.forename: Bing
authors.initials: B
authors.lastname: Huang
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Hao
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China.
authors.forename: Haobin
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China.
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Ma
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China.
authors.forename: Hongzhen
authors.initials: H
authors.lastname: Li
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China. Electronic address: FudeNie1969@163.com.
authors.forename: Fude
authors.initials: F
authors.lastname: Nie
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, PR China. Electronic address: huanghui@caep.ac.cn.
authors.forename: Hui
authors.initials: H
authors.lastname: Huang
keywords: Core–shell; High-energy-density materials; Safety; Sensitivity; Ultrasound