Experimental and modeling studies of binary organic eutectic systems to be used as stabilizers for nitrate esters-based energetic materials

Abstract

Four binary mixtures with potential for stabilizing energetic materials have been investigated. The phase diagrams of N-(2-methoxyethyl)-p-nitroaniline þ diphenylamine, N-(2-methoxyethyl)-p-nitroaniline þ N-(2-acetoxyethyl)-p-nitroaniline, N-(2-methoxyethyl)-p-nitroaniline þ 2-nitrodiphenylamine, and N-(2methoxyethyl)-p-nitroaniline þ 1,3-diethyl-1,3-diphenylurea have been determined by differential scanning calorimetry. All systems display a simple eutectic behavior. Consistency tests have been applied to inspect the quality of the SLE data, showing very satisfactory quality factors. The SLE data have also been correlated by Wilson and NRTL models. The employed equations calculated the equilibrium temperatures with a root mean square deviations varying from 1.37 to 2.29 K. These models have been applied to compute the excess thermodynamic functions as well, giving highly comparable values for a further qualitative and quantitative analysis. The results show a positive deviation from ideality for all the investigated systems due to the dominant effect of the self-association molecules. The XRD studies revealed the existence of weak interactions between the components in the formed eutectics and suggested that they are mechanical systems.

Experimental Investigation and Modeling of Cocrystal Formation in L-Menthol/Thymol Eutectic System

“…According to the DSC curves shown in Figure A, it is highly probable that the second solid is a cocrystal with a stoichiometric ratio of 3:2 for l -menthol:thymol (3:2 cocrystal). An analysis of the powder XRD patterns and the DSC curves in Figure shows that the solidus peaks at x thymol = 0.50 and 0.33 with onset temperatures of 271.6 and 272.7 K, respectively, represent the two eutectic points of the system. − …”

Characterization, Thermolysis, and Energetic Properties of an MTNP/PETN Eutectic Prepared via the Solvent/Anti‐Solvent Method

“…MTNP has good casting properties, but it has not yet been explored. Scholars [19–23] have also conducted a series of studies on binary organic eutectic systems for use as stabilizers for nitrate ester‐based energetic materials, and the study showed that the eutectic has better performance. Therefore, this article uses MTNP and PETN as raw materials to form a eutectic mixture with the characteristics of high energy, insensitivity and low melting point, which is expected to meet the requirements of modern weapons.…”

Extending the SAFT-γ Mie approach to model benzoic acid, diphenylamine, and mefenamic acid: Solubility prediction and experimental measurement

“…The data of melting enthalpy found in recent literature for benzoic acid [55,56,57,58,59,60,61,69] and diphenylamine [62,63,64,65,66,67,68] present a large dispersion of values, from 15 kJ/mol to 21 kJ/mol for these two molecules. For this reason, we employ here average values calculated from literature data with the addition of those measured in our current work (cf.…”