Application of vacuum stability test to determine thermal decomposition kinetics of nitramines bonded by polyurethane matrix

Elbeih, Ahmed; Abd‐Elghany, Mohamed; Elshenawy, Tamer

doi:10.1016/j.actaastro.2016.12.024

Cited by 42 publications

(16 citation statements)

References 33 publications

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“…Each of these methods can be used for isothermal and nonisothermal processes. In the present work, the kinetic parameters have been determined under isothermal conditions, where the kinetic model-fitting method in its integral form was performed based on the following equation [26,29]:…”

Section: Kinetic Analysismentioning

confidence: 99%

“…Standards and standardization of test methodologies for the compatibility assessment of energetic materials have been reported [25]. Furthermore, kinetics is a crucial approach used to investigate the compatibility of energetic materials, where the main purpose is to determine reaction mechanism and the parameters of the Arrhenius equation [26,27].…”

Section: Introductionmentioning

confidence: 99%

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New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

Trache

Tarchoun

Chelouche

et al. 2019

Propellants Explo Pyrotec

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In this paper, the compatibility of nitrocellulose (NC) with some aniline‐based stabilizers was studied in order to detect any interaction between these materials. Both thermal techniques [differential scanning calorimetry (DSC) and vacuum stability test (VST)], and supplementary non‐thermal techniques [Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD) and densimetry] were used. The thermal and non‐thermal measurements showed that NC was highly compatible with N‐(2‐methoxyethyl)‐p‐nitroaniline (MENA) and diphenylamine (DPA), while a degree of incompatibility is indicated for N‐(2‐acetoxymethyl)‐p‐nitroaniline (ANA). The compatibility of the different mixtures was further probed by the kinetic investigation, and the activation energy and the pre‐exponential factors were computed. A detailed discussion and comparison of the compatibility results from all the methods are made.

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Section: Kinetic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

Trache

Tarchoun

Chelouche

et al. 2019

Propellants Explo Pyrotec

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show abstract

“…A linear relationship was observed based on each curve being tested isothermally for 60-2400 minutes. The slope of these lines, k, corresponds to the reaction velocity of gaseous product evolution in a zero-order reaction, 23,25,45,46 and in this case, the slope k expresses the specic rate constant (in kPa g À1 min À1 ). …”

Section: Vacuum Stability Testmentioning

confidence: 99%

“…The measurement procedures have previously been reported. 23,25,45,46 The amount of sample used for a measurement was 2 g. The duration of the test was 40 hours. The temperature for the isothermal measurements was chosen to be 120 C. Samples in evacuated glass test tubes were placed into the heating block and heated to the desired temperature.…”

Section: Vacuum Stability Testmentioning

confidence: 99%

The effect of glycidyl azide polymer on the stability and explosive properties of different interesting nitramines

2018

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“…The time required for ignition of each sample is presented in table 2 at different isothermal temperatures. The kinetic parameters can be obtained by using the measurement of the ignition delay method as reported in literature [22]. Arrhenius equation was used to determine the activation energy of the studied samples by plotting a linear relationship between ln (time to ignition, t ig ,) and 1000/temperature, T/K, of each sample as shown in Fig.…”

Section: Ignition Temperature and Ignition Delay Measurementsmentioning

confidence: 99%

Preparation and Sensitivity Measurements of Graphene Oxide-RDX Composite

et al. 2017

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Abstract. The effect of graphene oxide (GO) on the safety characteristics of 1,3,5-trinitro-1,3,5-triazinane (RDX) was studied in this work. Graphene oxide was prepared and was investigated to form a composite based on GO-RDX by solvent-antisolvent slurry technique. For comparison, different polymer bonded explosives (PBXs) based on RDX bonded by viton A, fluorel or polymethyl-methacrylate binders were studied and designed as RDX-Viton, RDX-Fluorel and RDX-PMMA respectively. Sensitivities to impact and friction of the presented samples as well as the pure RDX was measured. The ignition temperatures were determined and the activation energies were calculated by using the ignition delay method. Results of x-ray diffraction and scanning electron microscope proved that RDX crystals were coated by a thin layer of GO. The impact sensitivity of GO-RDX composite is lower than that of the other studied samples while the friction sensitivity is slightly higher. The ignition temperature of GO-RDX was lower than the other studied samples which indicates that the GO caused accumulation of the decomposition gaseous products and accelerated the decomposition process of RDX. GO is an interesting candidate material to be used for coating the explosive crystals instead of the polymeric matrices.

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Application of vacuum stability test to determine thermal decomposition kinetics of nitramines bonded by polyurethane matrix

Cited by 42 publications

References 33 publications

New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

New Insights on the Compatibility of Nitrocellulose with Aniline‐Based Compounds

The effect of glycidyl azide polymer on the stability and explosive properties of different interesting nitramines

Preparation and Sensitivity Measurements of Graphene Oxide-RDX Composite

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