TY - JOUR
T1 - Functionalized Carbon Nanotube Guided Growth of HMX Crystals with Improved Thermal Stability and Reduced Sensitivity
AU - Wang, Zikangping
AU - Xiong, Kunyu
AU - Xue, Zhi Hua
AU - Yan, Qi Long
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/12/6
Y1 - 2023/12/6
N2 - This study focuses on the crystal growth of hybrid HMX crystals guided by functionalized carbon nanotubes (F-CNTs) acting as nucleation centers, leading to improved thermal stability and sensitivity. It has been shown that HMX would grow in a form of distinctive needle-like hybrid crystals due to strong interaction with one-dimensional F-CNTs. Notably, under the effect of 0.5 wt % of carbonyl functionalized CNTs, HMX crystals are formed with a length-diameter ratio of 23. Meantime, its decomposition Ea is 248.1 kJ·mol-1, 43% higher than that of HMX. Due to high conductivity and strength of CNTs, the resulting hybrid HMX crystals have 131% higher impact initiation energy compared to the pure ones. Hybrid crystal doped with 0.5 wt % fluorinated carbon nanotube demonstrates the highest heat release values at 1267 J·g-1, with an approximate 32% increase compared to pure HMX, and follows a random chain scission model (L2).
AB - This study focuses on the crystal growth of hybrid HMX crystals guided by functionalized carbon nanotubes (F-CNTs) acting as nucleation centers, leading to improved thermal stability and sensitivity. It has been shown that HMX would grow in a form of distinctive needle-like hybrid crystals due to strong interaction with one-dimensional F-CNTs. Notably, under the effect of 0.5 wt % of carbonyl functionalized CNTs, HMX crystals are formed with a length-diameter ratio of 23. Meantime, its decomposition Ea is 248.1 kJ·mol-1, 43% higher than that of HMX. Due to high conductivity and strength of CNTs, the resulting hybrid HMX crystals have 131% higher impact initiation energy compared to the pure ones. Hybrid crystal doped with 0.5 wt % fluorinated carbon nanotube demonstrates the highest heat release values at 1267 J·g-1, with an approximate 32% increase compared to pure HMX, and follows a random chain scission model (L2).
UR - http://www.scopus.com/inward/record.url?scp=85179162457&partnerID=8YFLogxK
U2 - 10.1021/acs.cgd.3c01144
DO - 10.1021/acs.cgd.3c01144
M3 - 文章
AN - SCOPUS:85179162457
SN - 1528-7483
VL - 23
SP - 9111
EP - 9120
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 12
ER -