Crystal structure and explosive performance of a new CL-20/benzaldehyde cocrystal

Journal of Molecular Structure, Год журнала: 2020, Номер 1215, С. 128267 - 128267

Опубликована: Апрель 14, 2020

Язык: Английский

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Comparative Studies of Synthesis, Performance, and Applications of Recently Developed CL-20 Based Co-crystals

Crystal Growth & Design, Год журнала: 2023, Номер 23(9), С. 6974 - 6987

Опубликована: Авг. 19, 2023

Owing to promising characteristics including a high heat of formation (100 kcal·mol–1), density (2.04 g·cm–3), and powerful explosive nature (14–20% more potent than 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX)), the hollow cage-type molecular structure polycyclic nitramine 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (HNIW/CL-20) has recently attained significant attention from scientists. Its sensitivity toward mechanical stimuli raises safety concerns. The safety–power contradiction high-energy explosives can be alleviated certain extent via co-crystallization method. It is possible modify properties energetic materials such as melting decomposition point, density, detonation (detonation velocity pressure), sensitivities (friction impact) by forming new chemical composition new/existing molecules through noncovalent interactions (π–π stacking, hydrogen bonds, van der Waals forces). Energetic co-crystals have been developed various approaches solvent evaporation, solvent/nonsolvent, grinding, slurry, resonant acoustic mixing, etc. This Review highlights an interesting overview HNIW/CL-20 based co-crystals, their synthetic methods, intermolecular interactions, physicochemical properties. Moreover, applications, existing problems, challenges for future work on CL-20-based are also discussed.

Язык: Английский

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Structure Design and Property Prediction of Energetic Pentazolate Salt: An Overview

Crystal Growth & Design, Год журнала: 2025, Номер unknown

Опубликована: Янв. 25, 2025

Язык: Английский

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Particle Size-Controllable Preparation of a CL-20/HMX Cocrystal with High Energy and Low Sensitivity

ACS Omega, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

To address the quality issues arising from uncontrollable morphological grain size in preparation of CL-20/HMX cocrystals, a novel method for producing high-quality cocrystals with well-defined sizes has been developed. The cocrystallization process was conducted using solvent/nonsolvent method, wherein mixing efficiency and solution supersaturation were precisely controlled through systematic optimization key parameters, including solvent composition, ratio, reaction temperature, stirring rate. Through experimental three distinct rhombohedral cocrystal samples uniform particle distributions morphologies successfully prepared, exhibiting characteristic D 50 values 20, 63, 130 μm. Comprehensive characterization revealed that SEM analysis demonstrated possess smooth surfaces regular geometric shapes. Combined XRD micro-CT analyses confirmed high crystallinity particularly noting reduced internal defects superior crystal perfection larger-grained samples. DSC measurements indicated enhanced thermal stability larger sizes. Furthermore, sensitivity testing showed are less sensitive than smaller-grained ones, which can be attributed to more compact structure crystals.

Язык: Английский

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Two novel TNB energetic cocrystals with low melting point: a potential strategy to construct melt cast explosive carriers

CrystEngComm, Год журнала: 2022, Номер 24(16), С. 2948 - 2953

Опубликована: Янв. 1, 2022

Two novel low melting-point cocrystals with high performances were obtained by cocrystallizing TNB 1,4-DNI and DNMT, namely TNB/1,4-DNI (1) TNB/DNMT (2).

Язык: Английский

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