Issue 44, 2021

Multilevel strategies for the composition and formation of DAAF/HNIW composite crystals

Abstract

Insensitive energetic materials are still a great challenge for potential applications. In order to study the performance of (3,3′-diamino-4,4′-azoxyfurazan/2,4,6,8,10,12-hexa-nitrohexaazaisowurtzitane, often referred to as CL-20) DAAF/HNIW, DAAF/HNIW, composite crystals with rod-like structure, spheroid-like structure and microsphere shape are prepared by a recrystallization method, self-assembly and microfluidics technology, respectively. Scanning electron microscopy (SEM) powder X-ray diffraction (PXRD) and infrared spectroscopy (FTIR) techniques were utilized to characterize the morphology and structure of DAAF/HNIW particles. Results of PXRD and FTIR spectroscopy of microspheres DAAF/HNIW indicated that the structure in the prepared products did not change compared with that of raw DAAF. The impact sensitivity of microspheres DAAF/HNIW could be reduced obviously than that in rod-like and spheroid-like DAAF/HNIW. The microspheres DAAF/HNIW prepared by the microfluidics technology provides an efficient route for the desensitization of energetic explosives and revealed an idea for the fabrication and application of the insensitive energetic explosive DAAF/HNIW.

Graphical abstract: Multilevel strategies for the composition and formation of DAAF/HNIW composite crystals

Supplementary files

Article information

Article type
Paper
Submitted
22 sept. 2021
Accepted
14 oct. 2021
First published
14 oct. 2021

CrystEngComm, 2021,23, 7750-7759

Multilevel strategies for the composition and formation of DAAF/HNIW composite crystals

S. Liu, B. Wu, Z. Li, C. An and J. Wang, CrystEngComm, 2021, 23, 7750 DOI: 10.1039/D1CE01277K

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