The Thermal Decomposition of Ammonium Perchlorate-Aluminum Propellants in Presence of Metallic Zinc Particles

Rodríguez-Pesina, Mónica; García-Domínguez, Jorge; García-Hernández, Felipe; Flores-Vélez, L. M.; Domínguez, O.

doi:10.4236/msa.2017.86030

Cited by 9 publications

(5 citation statements)

References 18 publications

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“…were recruited to accelerate thermal decomposition of AP. In addition, metallic nanoparticles such as nano Fe, nano Zn, nano Cu, − nano Ni, , etc. were also prepared to promote thermolysis of AP.…”

Section: Introductionmentioning

confidence: 99%

Thermal Behavior and Decomposition Mechanism of Ammonium Perchlorate and Ammonium Nitrate in the Presence of Nanometer Triaminoguanidine Nitrate

Wang

Song

2019

ACS Omega

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Nanometer triaminoguanidine nitrate (TAGN) with mean size of 218.7 nm was fabricated, and its structures were characterized by scanning electron microscopy, X-ray diffraction, IR, and X-ray photoelectron spectroscopy analyses. As an energetic accelerator for thermal decomposition of ammonium perchlorate (AP) and ammonium nitrate (AN), 10% nano TAGN blended with AP and AN, and samples “[90% AP + 10% (nano TAGN)]” and “[90% AN + 10% (nano TAGN)]” were obtained, respectively. Differential scanning calorimetry (DSC) analyses were employed to investigate the decomposition kinetics and thermodynamics of the samples. The results indicated that [90% AP + 10% (nano TAGN)] presented a higher activation energy (152.34 kJ mol –1 ) than pure AP (117.21 kJ mol –1 ) and [90% AN + 10% (nano TAGN)] possessed a lower activation energy (147.51 kJ mol –1 ) than pure AN (161.40 kJ mol –1 ). All activation free energies (Δ G ≠ ) were positive values. This means that activation of the molecules was not a spontaneous process. The decomposition peak temperature of AP decreased from 478.5 °C (for pure AP) to 287.2 °C (for [90% AP + 10% (nano TAGN)]). The decomposition peak of AN also advanced via doping with nano TAGN. Using DSC-IR analysis, the decomposition products of nano TAGN, pure AP, [90% AP + 10% (nano TAGN)], pure AN, and [90% AN + 10% (nano TAGN)] were investigated, and their decomposition mechanisms were proposed. The key factors, i.e., the formation of hydrazine in the decomposition of nano TAGN, were speculated, which substantially promoted the consumption of HNO 3 , HClO 4 , and their decomposition products in kinetics. Additionally, the energy performances of AP- and AN-based propellants doping with TAGN were evaluated. It is disclosed that the introduction of TAGN would not result in improvement in the energy performance of propellants, but due to its energetic property and high hydrogen content, proper introduction of TAGN will not reduce the energy performance of propellants in a large degree compared with the introduction of inert catalysts.

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Section: Introductionmentioning

confidence: 99%

Thermal Behavior and Decomposition Mechanism of Ammonium Perchlorate and Ammonium Nitrate in the Presence of Nanometer Triaminoguanidine Nitrate

Wang

Song

2019

ACS Omega

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“…The "International Confederation for Thermal Analysis and Calorimetry (ICTAC)" committee recommended that utilizing multiple heating rate programs leads to more reliable kinetic parameters with respect to single heating rate program [36]. Usually, the thermoanalytical methods employed for the study of thermal decomposition and kinetics of energetic materials (like propellants and propellant ingredients) are thermogravimetric analysis (TG), differential thermal analysis (DTA) and differential scanning calorimeter (DSC) [37][38][39][40][41]. Recently, these techniques have been revealed to be requisite to assess the effect of ballistic modifiers on the thermal decomposition and kinetic parameters of solid propellant [39,[42][43][44].…”

mentioning

confidence: 99%

Thermal behavior and decomposition kinetics of composite solid propellants in the presence of amide burning rate suppressants

Trache

Maggi

Palmucci

et al. 2018

J Therm Anal Calorim

109

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The employment of burning rate suppressants in the solid rocket propellant formulation is long known. Different research activities have been conducted to well understand the mechanism of suppression, but literature about the action of oxamide (OXA) and azodicarbonamide (ADA) on the thermal decomposition of composite propellant is still scarce. The focus of this study is on investigating the effect of burning rate suppressants on the thermal behavior and decomposition kinetics of composite solid propellants. Thermogravimetric analysis (TG) and differential thermal analysis (DTA) have been used to identify the changes in the thermal and kinetic behavior of coolant-based propellants. Two main decomposition stages were observed. It was found that OXA played an inhibition effect on both stages, whereas the ADA acts as a catalyst in the first stage and as coolant in the second one. The activation energy dependent on the conversion rate was estimated by two model-free integral methods: Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) based on the TG data obtained at different heating rates. The mechanism of action of coolants on the decomposition of solid propellants was confirmed by the kinetic investigation as well.

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“…Among various methods for evaluation of the AP decomposition kinetics, the Kissinger method has been considered in many studies . The Kissinger method is based on the thermal analysis of the DSC test using the following equation:

ln (β / T_{m}^{2}) = ln (A R / E_{a}) - E_{a} / R T_{m}

…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the catocene/graphene oxide nanocomposite catalytic activity on ammonium perchlorate thermal decomposition

Sa'at

Yarmohammadi

Pedram

et al. 2019

Int J of Chemical Kinetics

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A novel nanocomposite catalyst for thermal degradation of the ammonium perchlorate (AP) has been synthesized, and its effect on the thermal behavior of AP has been investigated. Preparation of the catalyst was carried out via functionalization of the graphene oxide with phenyl isocyanate and its noncovalent bonding to catocene. The catalytic activity of the catalyst was studied by thermal gravimetric analysis/differential scanning calorimetry at various heating rates. In addition, the effect of the catalyst on the AP thermal decomposition has been investigated by Kissinger and Friedman methods as two model‐free methods for calculation of the activation energy parameter. According to the Kissinger method calculations, the Ea of AP decomposition reduced about 151 kJ⋅mol−1 lower than the reported value for pure AP in the presence of the catalyst. Calculation of the Ea value for various reaction conversion rates by the Friedman method also confirmed the Kissinger method results.

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The Thermal Decomposition of Ammonium Perchlorate-Aluminum Propellants in Presence of Metallic Zinc Particles

Cited by 9 publications

References 18 publications

Thermal Behavior and Decomposition Mechanism of Ammonium Perchlorate and Ammonium Nitrate in the Presence of Nanometer Triaminoguanidine Nitrate

Thermal Behavior and Decomposition Mechanism of Ammonium Perchlorate and Ammonium Nitrate in the Presence of Nanometer Triaminoguanidine Nitrate

Thermal behavior and decomposition kinetics of composite solid propellants in the presence of amide burning rate suppressants

Evaluation of the catocene/graphene oxide nanocomposite catalytic activity on ammonium perchlorate thermal decomposition

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