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Materials 2017, 10(8), 974; https://doi.org/10.3390/ma10080974

Preparation and Characterization of Cyclotrimethylenetrinitramine (RDX) with Reduced Sensitivity

1
School of Materials Science and Engineeering, Beijing Institute of Technology, Beijing 100081, China
2
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China
3
Research Institute, Gansu Yin’guang Chemical Industry Group Co., Ltd., Baiyin 730900, China
*
Author to whom correspondence should be addressed.
Received: 14 July 2017 / Revised: 9 August 2017 / Accepted: 11 August 2017 / Published: 21 August 2017
(This article belongs to the Special Issue Energetic Materials and Processes)
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Abstract

The internal defects and shape of cyclotrimethylenetrinitramine (RDX) crystal are critical parameters for the preparation of reduced sensitivity RDX (RS-RDX). In the current study, RDX was re-crystallized and spheroidized to form the high-quality RDX that was further characterized by purity, apparent density, size distribution, specific surface area, impact sensitivity, and shock sensitivity. The effects of re-crystallization solvent on the growth morphology of RDX crystal were investigated by both theoretical simulation and experiment test, and consistent results were obtained. The high-quality RDX exhibited a high purity (≥99.90%), high apparent density (≥1.811 g/cm3), spherical shape, and relatively low impact sensitivity (6%). Its specific surface area was reduced more than 30%. Compared with conventional RDXs, the high-quality RDX reduced the shock sensitivities of PBXN-109 and PBXW-115 by more than 30%, indicating that it was a RS-RDX. The reduced sensitivity and good processability of the high-quality RDX would be significant in improving the performances of RDX-based PBXs. View Full-Text
Keywords: reduced sensitivity RDX; recrystallization; spheroidization; crystal morphology; shock sensitivity reduced sensitivity RDX; recrystallization; spheroidization; crystal morphology; shock sensitivity
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Wang, Y.; Li, X.; Chen, S.; Ma, X.; Yu, Z.; Jin, S.; Li, L.; Chen, Y. Preparation and Characterization of Cyclotrimethylenetrinitramine (RDX) with Reduced Sensitivity. Materials 2017, 10, 974.

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