Studies on ballistic parameters of di-butyl phthalate-coated triple base propellant used in large caliber artillery gun ammunition

Dahiwale, Sunil; Bhongale, Chetan; Roy, Subhankar; Navle, P. B.; Asthana, S. N.

doi:10.1080/07370652.2018.1542467

Cited by 17 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the magnitude of Δ G mainly depends on Δ H [ 22 ]. Hildebrand introduced the concept of solubility parameter ( δ ) [ 23 ], which was defined as the square root of the cohesive energy density (CED) (Equation (2)).

…”

Section: Resultsmentioning

confidence: 99%

Study on Cellulose Acetate Butyrate/Plasticizer Systems by Molecular Dynamics Simulation and Experimental Characterization

Wang

Jin

et al. 2020

Polymers

View full text Add to dashboard Cite

Cellulose acetate butyrate (CAB) is a widely used binder in polymer bonded explosives (PBXs). However, the mechanical properties of PBXs bonded with CAB are usually very poor, which makes the charge edges prone to crack. In the current study, seven plasticizers, including bis (2,2-dinitro propyl) formal/acetal (BDNPF/A or A3, which is 1:1 mixture of the two components), azide-terminated glycidyl azide (GAPA), n-butyl-N-(2-nitroxy-ethyl) nitramine (Bu-NENA), ethylene glycol bis(azidoacetate) (EGBAA), diethylene glycol bis(azidoacetate) (DEGBAA), trimethylol nitromethane tris (azidoacetate) (TMNTA) and pentaerythritol tetrakis (azidoacetate) [PETKAA], were studied for the plasticization of CAB. Molecular dynamics simulation was conducted to distinguish the compatibilities between CAB and plasticizers and to predict the mechanical properties of CAB/plasticizer systems. Considering the solubility parameters, binding energies and intermolecular radical distribution functions of these CAB/plasticizer systems comprehensively, we found A3, Bu-NENA, DEGBAA and GAPA are compatible with CAB. The elastic moduli of CAB/plasticizer systems follow the order of CAB/Bu-NENA>CAB/A3>CAB/DEGBAA>CAB/GAPA, and their processing property is in the order of CAB/Bu-NENA>CAB/GAPA>CAB/A3>CAB/DEGBAA. Afterwards, all the systems were characterized by FT-IR, differential scanning calorimetry (DSC), differential thermogravimetric analysis (DTA) and tensile tests. The results suggest A3, GAPA and Bu-NENA are compatible with CAB. The tensile strengths and Young’s moduli of these systems are in the order of CAB/A3>CAB/Bu-NENA>CAB/GAPA, while the strain at break of CAB/Bu-NENA is best, which are consistent with simulation results. Based on these results, it can be concluded that A3, Bu-NENA and GAPA are the most suitable plasticizers for CAB binder in improving mechanical and processing properties. Our work has provided a crucial guidance for the formulation design of PBXs with CAB binder.

show abstract

…”

Section: Resultsmentioning

confidence: 99%

Study on Cellulose Acetate Butyrate/Plasticizer Systems by Molecular Dynamics Simulation and Experimental Characterization

Wang

Jin

et al. 2020

Polymers

View full text Add to dashboard Cite

show abstract

“…What's more, it was found that the deeper the NG impregnated and the slower the deterrent concentration decreased, the stronger the progressive burning and the better the internal ballistic properties. Dahiwale et al [7] studied the ballistics of di-butyl phthalate (DBP)-coated triple base propellants and reported that DBP-deterred propellants showed decreased values of ballistic parameters and lowered flame temperature, which contributed to prolonged barrel life. Liang et al [8] built a theoretical model of the changes in deterrent concentration profiles and propellant combustion performance caused by aging migration based on the normal distribution characteristics of deterrents and the derivation of Fick's second law.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Propellant Deterrent Concentration Profile on Combustion Performance

Gou¹,

Li²,

Bian

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This paper builds a theoretical model concerning the influence of deterrent concentration profiles on the combustion performance of spherical propellants and identifies the effects of deterrent diffusion depth (A) and combined strength of deterring (P) on propellant Γ~Ψ curves. In addition, a calculation method for quantitatively comparing the combustion progressivity of Γ~Ψ curves is presented. The results show that the percentage of the propellant burned corresponding to the maximum gas generation intensity Ψmax has a good linear relationship with both the parameters P and A, with a correlation coefficient of 0.986 and 0.982, respectively. The progressivity index is non-linearly associated with deterrent diffusion depth A, but linearly associated with the combined strength of deterring P.

show abstract

“…In addition, deterring agent is a non-energetic substance. So the combustion residue and free carbon generated during the combustion process will result in the increased smoke concentration [13]. The apparent flame and smoke emitted from barrel weapons will not only expose one's own position and reduce targeting accuracy, but also have a physiological and psychological impact on soldiers, which limit the battlefield effectiveness and survivability of barrel weapons severely.…”

Section: Introductionmentioning

confidence: 99%

Surface denitration structure on dynamic combustion performance and muzzle flame of mixed nitrate gun propellant

Chen

Liu

et al. 2023

Propellants Explo Pyrotec

View full text Add to dashboard Cite

The gun propellant is an inaccessible energy and fuel for projectile to achieve destructive capability in a weapon system. Nitrocellulose/nitroglycerine/triethylene glycol dinitrate(NC/NG/TEGDN) based gun propellant with higher energy level than single‐based gun propellant can meet the demands of modern warfare. Currently, deterring strategy is commonly used to improve the combustion progressivity of NC/NG/TEGDN based gun propellant, together with aggravating the harmful emission phenomena such as muzzle smoke and flame. Therefore, it is essential to design and fabricate NC/NG/TEGDN based gun propellant with both good combustion progressivity and low characteristic signal. In this work, a gradiently denitrated NC/NG/TEGDN based gun propellant was successfully prepared by denitration strategy, whose structure was confirmed by FT‐IR, Raman and SEM. Here, closed bomb vessel test and interior ballistic test were conducted. The results showed that the gradiently denitrated NC/NG/TEGDN based gun propellant exhibited better combustion progressivity and interior ballistic performance than raw gun propellant, and these properties can be controlled by modulating the degree of denitration. Meanwhile, the change laws of the muzzle smoke and flame of the gradiently denitrated NC/NG/TEGDN based gun propellant were investigated by the smoke box method and high‐speed photography. Furthermore, a lower characteristic signal for the gradiently denitrated NC/NG/TEGDN based gun propellant was found compared to the deterred gun propellant by theoretical calculations. This work provides a new idea for preparing and applying a gun propellant with excellent comprehensive performance, including high energy, good combustion progressivity and low characteristic signal.

show abstract

Studies on ballistic parameters of di-butyl phthalate-coated triple base propellant used in large caliber artillery gun ammunition

Cited by 17 publications

References 13 publications

Study on Cellulose Acetate Butyrate/Plasticizer Systems by Molecular Dynamics Simulation and Experimental Characterization

Study on Cellulose Acetate Butyrate/Plasticizer Systems by Molecular Dynamics Simulation and Experimental Characterization

The Influence of Propellant Deterrent Concentration Profile on Combustion Performance

Surface denitration structure on dynamic combustion performance and muzzle flame of mixed nitrate gun propellant

Contact Info

Product

Resources

About