Kinetics and enthalpy of nitroglycerin evaporation from double base propellants by isothermal thermogravimetry

Sućeska, Muhamed; Mušanić, Sanja Matečić; Houra, Ivona Fiamengo

doi:10.1016/j.tca.2010.06.014

Cited by 62 publications

(41 citation statements)

References 22 publications

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“…If the mobile components are not chemically bonded to a substrate material, they will migrate in the direction of lower concentrations [15]. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…It can be seen that k 2 was much smaller than k 1 , which indicated that the mechanism of migration of these compounds is zero order. Suceska et al found that at a very early stage of evaporation of nitroglycerin from a double base rocket propellant, the evaporation can be described by the zero-order reaction model [15]. Though migration is not the same as evaporation, they are comparable because they are both physical changes in complex materials.…”

Section: Resultsmentioning

confidence: 99%

“…Suceska et al studied a very early stage of evaporation of nitroglycerin from a DB propellant by applying isothermal thermogravimetry experiments. The activation energy of nitroglycerin evaporation was calculated to be 81.9 kJ/mol [15]. Gottlieb and Bar studied plasticizer migration across bonded HTPB/AP propellant interfaces during cure and evaluated the diffusion coefficient to show that the curing period is significant to the migration phenomenon and direct influence on tensile strength for short aging periods [16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Migration kinetics and mechanisms of plasticizers, stabilizers at interfaces of NEPE propellant/HTPB liner/EDPM insulation

Huang

Nie

Zhang

et al. 2012

Journal of Hazardous Materials

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“…If the mobile components are not chemically bonded to a substrate material, they will migrate in the direction of lower concentrations [15]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Migration kinetics and mechanisms of plasticizers, stabilizers at interfaces of NEPE propellant/HTPB liner/EDPM insulation

Huang

Nie

Zhang

et al. 2012

Journal of Hazardous Materials

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“…Analytical methods of the drying rate for the determinationo ft he residual solvent content are of the utmost importance in view of the effect of these properties on the mechanical resistance of propellants in the cutting process. Thermogravimetric analysis( TGA) has been widely used for drying analysis [8,9].H owever, it has many shortcomings when it was applied in the mass measurement in the drying process of propellants, such as hazard of operationa nd strict requirementso ns mall mass of propellant samples. All these shortcomings limit the practical applicationo fT GA in the actuald rying process of propellant production.…”

Section: Introductionmentioning

confidence: 99%

On‐Line Auto Mass Measurement of Residual Solvent Mass and its Influence on Mechanical Properties of Propellants

Chen

Zhang

Dong³

et al. 2016

Propellants Explo Pyrotec

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An on‐line auto mass measurement approach was applied to study the volatilization of residual solvents during the drying process of a single‐based propellant, a double‐based propellant containing triethyleneglycol dinitrate (TEGDN propellant, denoted as TEGDN‐1) and a TEGDN propellant containing RDX (denoted as TEGDN‐2). Drying experiments were conducted at a temperature of 50 °C, steady humidity, and atmospheric pressure. According to the drying rate curves obtained by the on‐line auto mass measurement approach, it took 44 h, 31 h and 38 h, respectively, for the residual solvent contents of the three kinds of propellants to come to an equilibrium point, which is approximately below 1 %. The mechanical properties of propellant strands with different residual solvent contents were tested by a universal testing machine and dynamic thermomechanical analysis (DMA). The results indicate that the mechanical properties of the single‐based propellant, TEGDN‐1 and TEGDN‐2 are influenced by the residual solvent content. The propellant strands are sufficiently plastic and elastic to be cut without being deformed at a broad range of temperature when they are dried to residual solvent contents of 5.8–3.6 %, 9–5.7 %, and 9.7–6.2 %, respectively. In the drying experiment, the on‐line auto measurement approach of the residual solvent mass of propellant strands is a highly promising method in view of its improvement in the cutting efficiency of propellant strands.

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“…Double-base propellants (DBP), which commonly consist of nitrocellulose (NC) as abinder plasticized by nitroglycerine (NG), are considered to be one of the oldest families of solidp ropellants and were devised asa result of the development of propulsion. [3] Researchersa re workingo ns olving NG decomposition problemsa nd its high impact sensitivity. [3] Researchersa re workingo ns olving NG decomposition problemsa nd its high impact sensitivity.…”

mentioning

confidence: 99%

Higher Performance and Safer Handling: Formulation Based on 2,2,2‐Trinitroethyl Formate and Nitrocellulose

et al. 2018

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on theoccasiono fhis 65th birthday An ew,g reen propellant formulation based on the high-energy dense oxidizer (HEDO) 2,2,2-trinitroethyl formate(TNEF) and nitrocellulose (NC) was prepared and thermally investigated using non-isothermal thermogravimetric analysis (TGA) and differentials canning calorimetry (DSC).S canning electronm icroscopy (SEM) was used to check the crystals of the oxidizer and the homogeneity of the new propellant formulation (NC-TNEF). The burning behavior of NC-TNEFw as recorded by high-speed camerat oo bserve the smoke produced. Ah igh specific impulse (I s = 257.4 s) waso btained from the characteristics calculation of the new propellant formulation by using EXPLO5_ V6.03 software.T he NC-TNEF mixture did not show any endothermicp eak and its exothermic peak wasa t2 04.6 8C, which means that ac omposite might be formed. The activation energy of the NC-TNEF was in the range of 184-190 kJ mol À1 . NC-TNEFh as ah igherp erformance and al ower hazard compared with the double-base propellant.

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Kinetics and enthalpy of nitroglycerin evaporation from double base propellants by isothermal thermogravimetry

Cited by 62 publications

References 22 publications

Migration kinetics and mechanisms of plasticizers, stabilizers at interfaces of NEPE propellant/HTPB liner/EDPM insulation

Migration kinetics and mechanisms of plasticizers, stabilizers at interfaces of NEPE propellant/HTPB liner/EDPM insulation

On‐Line Auto Mass Measurement of Residual Solvent Mass and its Influence on Mechanical Properties of Propellants

Higher Performance and Safer Handling: Formulation Based on 2,2,2‐Trinitroethyl Formate and Nitrocellulose

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