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Open AccessArticle

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