Morphology control and crystal structure and properties analysis of FOX-7/HMX composite crystals prepared by rotary evaporation method

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology Pub Date : 2025-01-21 DOI:10.1016/j.partic.2025.01.004

Penglin Kang, Wenjie Liu, Wenyu Wu, Xiaodong Li, Xiaona Cui, Fengze Cai, Qicong Jiang

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引用次数: 0

Abstract

Enhancing the safety of high-energy explosives (EMs) is crucial for the secure handling of energetic materials during storage, transportation, and use. Compositing multiple energetic materials effectively enhances the insensitivity of explosives. This study used N,N-dimethylformamide (DMF) as a solvent in the rotary evaporation method to prepare 1,1-diamino-2,2-dinitroethene/1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (FOX-7/HMX) composite crystals. By varying the molar ratios of FOX-7 and HMX, this study investigated their effects on the morphology of the composite crystals, and the formation mechanism of the composite crystal was analyzed. The study characterized and tested the crystal structure, thermal decomposition, cook-off performance, and impact sensitivity of the composite crystal. The results indicate that at a 5:5 M ratio of FOX-7 to HMX, the compound degree is 90.79%, and FOX-7 exhibits uniform adhering to the surface of the HMX crystal. FT-IR and XRD patterns analyses revealed shifts in the absorption peak of the composite crystal and the characteristic peak of the XRD curve. FOX-7 crystals were embedded on the surface of HMX crystals, forming a co-crystal layer and altering the crystal structure. Differential scanning calorimetry tests demonstrate that the thermal decomposition temperature of FOX-7/HMX composite crystals is 1.77 °C higher than the raw FOX-7, and during the cook-off test, the composite crystal reaction level is combustion, accompanied by an increase in characteristic drop height to 62.6 cm, indicating improved thermal stability and impact safety.

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来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.