کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8149137 1524349 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphological diversity of nitroguanidine crystals with enhanced mechanical performance and thermodynamic stability
ترجمه فارسی عنوان
تنوع مورفولوژیکی بلورهای نیتروگوانیدین با افزایش عملکرد مکانیکی و پایداری ترمودینامیکی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی
Nitroguanidine (NQ) is a commonly used explosive, which has been widely used for both civilian and military explosive applications. However, the weak flowability and mechanical performance limit its application. In this work, mechanical performance and thermodynamic stability of NQ crystals were improved by controlling crystal morphologies in the crystallization process. Typical NQ crystals with multiple morphologies and single crystal form were obtained in the presence of additives during the cooling crystallization. The morphology controlled NQ crystals showed higher density, unimodal crystal size distribution and enhanced flowability. The additives showed the inhibitory effect on the nucleation of NQ crystals by in-situ FBRM and PVM determination, and the mechanism was analyzed by means of morphological prediction and molecular simulation. Furthermore, the morphology controlled NQ crystals suggested higher thermodynamic stability according to the calculation of entropy, enthalpy, Gibbs free energy and apparent activation energy on the basis of DSC results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 480, 15 December 2017, Pages 132-140
نویسندگان
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