Largely desensitized and stabilized CL-20 crystals obtained through reinforcement with cross-linked graphene oxide

Abstract

ε-CL-20 is currently the most powerful commercially available explosive, but the high mechanical sensitivity and low phase stability limit its broad application. In order to reduce the sensitivity of ε-CL-20,...

Precise Regulation of Combustion Characteristics of High-Energy Composite Propellants by Incorporation of CL-20 Crystals Intercalated with Energetic Burn Rate Modifiers

“…Among the propellants with hybrid CL-20, CP-B that contains CL-20 intercalated with TAGP-K exhibits the first exotherm associated with a higher initial decomposition temperature and peak temperature, which indicates that TAGP-K has a stronger effect on suppressing the thermal decomposition of CL-20 as compared to other TAGP-Ms materials. In addition, the endotherm that is normally observed for the CL-20 crystal was not displayed for the studied propellants, which could be attributed to the presence of TAGP-Ms with the cross-linked structure that constrains the volume expansion of CL-20 resulting in its polymorphic transition to be inhibited …”

“…In addition, the endotherm that is normally observed for the CL-20 crystal was not displayed for the studied propellants, which could be attributed to the presence of TAGP-Ms with the cross-linked structure that constrains the volume expansion of CL-20 resulting in its polymorphic transition to be inhibited. 27 The thermal decomposition of CL-20 is followed by the decomposition of AP observed for the propellant samples prepared in the DSC curves. The endothermic peaks due to the structure transition of AP appear at a temperature of 242 °C prior to AP decomposition, which is in good agreement with that reported in the literature.…”

Structural Control of Energetic Triaminoguanidine Nitrate Polymer Nanostructures for Reduced Thermal Reactivity

“…Importantly, the strong hydrogen bonding effect between nitramine compounds and nano TAGP can induce supermolecule assembling during cocrystallization, thereby improving the stability of the crystal lattice and reducing crystal defects . The typical nitramines such as 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX), RDX, and 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) have been assembled under the constraint of TAGP layers. The density of the resulting modified HMX, RDX, and CL-20 was increased, and the heat of formations was also improved.…”