4.4 Article

Encapsulation of Cyclotetramethylenetetranitramine (HMX) by Electrostatically Self-Assembled Graphene Oxide for Desensitization

Journal

PROPELLANTS EXPLOSIVES PYROTECHNICS
Volume 42, Issue 9, Pages 1057-1065

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/prep.201700053

Keywords

HMX; graphene oxide; self-assembly; desensitization

Funding

  1. National Natural Science Foundation of China (NSFC) [11502248, 11502245, 11502249]
  2. Innovation Foundation of Institute of Chemical Materials [KJCX2015-05]

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To improve the safety of cyclotetramethylenetetranitramine (HMX) particles, a novel strategy was developed for the fabrication of graphene oxide encapsulated HMX (HMX@GO) by electrostatic self-assembly between graphene oxide and HMX particles. The prepared samples were characterized by optical microscopy, scanning electron microscopy, Raman spectroscopy, X-ray photon spectroscopy, thermogravimetry, differential scanning calorimetry and water contact angle tests. The results revealed that GO sheets were coated densely and homogeneously on the HMX particles in a HMX@GO composite at a low GO content of about 0.23wt%. Compared with that of raw HMX, the impact sensitivity of the HMX@GO composite decreased from 100% to 30%, and the 50% probability of required ignition energy (E-50) in the electrostatic spark sensitivity test increased from 0.66J for HMX to 1.12J for the HMX@GO composite, suggesting that the electrostatically self-assembled GO coating layer could obviously enhance the safety of HMX.

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