Assessment of the Shelf Life of Composite Solid Propellants in Air and Nitrogen Atmospheres through Thermal Ageing

• Autorzy: Keshavarz Mohammad Hossein , Hosseini Seyyed Hesamodin , Mehran Karimi

Identyfikatory

DOI

10.22211/cejem/134663

• Języki publikacji: EN

Abstrakty

EN

This work introduces dynamic mechanical thermal analysis (DMTA) as an efficient method for the assessment of the shelf life of solid composite solid propellants in air and nitrogen atmospheres. The samples were aged at three temperatures 323.15, 333.15, and 343.15 K for 60, 120, and 180 days. The two different methods of Arrhenius and Berthelot were used to compare the effects of air and nitrogen atmospheres on the ageing of composite solid propellants. Damping (Tan δ) of composite solid propellants was used to determine the shelf life of the samples based on the loss of half of the physical property Tan δ (50% drop in damping). For the air atmosphere, the calculated activation energy for the degradation reactions of the samples was 86.26 kJ·mol–1. Both models, Arrhenius and Berthelot, confirmed that the shelf lives of the samples under the nitrogen atmosphere are more than four times those in an air atmosphere.

Słowa kluczowe

EN

composite solid propellant; inert atmosphere; dynamic mechanical thermal analysis; DMTA; damping; ageing

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2021
• Tom: Vol. 18, no. 1
• Strony: 25--45
• Opis fizyczny: Bibliogr. 46 poz., rys., tab.

Twórcy

autor

Keshavarz Mohammad Hossein

• Faculty of Applied Sciences, Malek Ashtar University of Technology, Iran

autor

Hosseini Seyyed Hesamodin

• Faculty of Applied Sciences, Malek Ashtar University of Technology, Iran

autor

Mehran Karimi

• Faculty of Applied Sciences, Malek Ashtar University of Technology, Iran

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).