Studies on thermal stability, autoignition and stabilizer depletion for shelf life of CMDB propellants

Asthana, S. N.; Divekar, C. N.; Singh, Haridwar

doi:10.1016/0304-3894(89)85075-7

Cited by 21 publications

(3 citation statements)

References 4 publications

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“…Accelerated aging test is one of the most common methods to predict the propellant's shelf-life at home and abroad. Two types of indexes are involved in the failure criterion: change of the properties (interior ballistic performance and mechanical properties) and loss of the composition content (nitrate ester, plasticizer and stabilizer) [2][3][4]. DPA that is a kind of most common stabilizer, and its derivatives can inhibit the decomposition reaction of nitrate ester.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Prediction of Propellant Shelf‐Life Based on Arrhenius Equation

Zhao

Rui

Wang

et al. 2018

Propellants Explo Pyrotec

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The content of diphenylamine (DPA) greatly influences the storage life of a single‐base propellant. According to the aging test, a novel method for establishing the reaction kinetic model based on Arrhenius equation is proposed to describe DPA depletion. The model deduced not only exactly describes the DPA depletion in the test, but also accurately estimates the DPA content at 55 °C, which gives a prediction of the propellant shelf‐life. This research develops a novel model for the reaction kinetic of DPA, and lays a theoretical foundation for the prediction of a propellant shelf‐life.

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Section: Introductionmentioning

confidence: 99%

A Novel Method for Prediction of Propellant Shelf‐Life Based on Arrhenius Equation

Zhao

Rui

Wang

et al. 2018

Propellants Explo Pyrotec

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“…Previously, researchers have reported that compositions incorporating NG and AP have lower shelf lives than analogous materials which do not contain this oxidizer [5][6][7][8]. However, these conclusions were drawn from heating experiments at elevated temperatures such as 130.5 8C [5].…”

Section: Introductionmentioning

confidence: 99%

Ammonium Perchlorate, Friend or Foe?

Tunnell

Ashcroft

Dale

et al. 2014

Propellants Explo Pyrotec

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In part 1 of this paper, it was demonstrated that a nitroglycerine and polyethylene glycol based propellant containing ammonium perchlorate degraded at a slower rate at temperatures of 80 °C or less compared with the other two energetic materials studied which did not have this oxidizer present. It was suggested that ammonium perchlorate might act as an oxygen inhibitor reducing the oxidation rate of the polyethylene glycol binder which decreases the rate of propellant decomposition. In part 2, the specific interaction between ammonium perchlorate, nitroglycerine and polyethylene glycol is reported. It has been shown that at temperatures lower than 90 °C, if there is any uncured and unstabilised PEG present, nitroglycerine rapidly degrades in the presence of ammonium perchlorate but this is prevented if stabiliser is added. In addition, ammonium perchlorate initially appears to hinder acid hydrolysis of nitroglycerine which also slows down the degradation of polyethylene glycol based propellants. However, in the long term at low temperatures, or short term at higher temperatures, AP accelerates the decomposition of NG.

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“…At the same time, due to the continuous oxidation decomposition reaction of nitrocotton (NC) in the storage process, the decomposition products are produced constantly. Therefore, there is a certain relationship between the depletion of MNA and the depletion of nitrocotton (NC), and the change of MNA content can be used to indirectly characterize the change of nitrocotton (NC) content in CMDB propellant matrix , Asthana et al, 1989. Nitrocellulose (NC) is an important part of the binder matrix of CMDB propellant.…”

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confidence: 99%

Storage-life prediction and relationship between maximum elongation and stabilizer depletion for a composite modified double base propellant (CMDB) propellant

Liu,

Li,

Yang

et al. 2023

Mech Time-Depend Mater

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In order to predict the storage life of composite modi ed double base propellant (CMDB propellant) at 298.15K, the correlation between the maximum elongation and the stabilizer depletion of CMDB propellant was studied. The thermal accelerated aging tests were carried out at 323. 15K, 333.15K, 343.15K and 353.15K. The changes of MNA content and maximum elongation at different thermal aging temperatures were analyzed and a modi ed exponential aging model for CMDB propellant was proposed. With MNA content and maximum elongation as aging characteristics, the storage life of CMDB propellants at 298.15K was predicted using the modi ed Arrhenius equation. The aging mechanism of CMDB propellant was analyzed and the correlation function model of maximum elongation and stabilizer depletion was established. The results show that the maximum elongation and MNA content decrease with aging time and aging temperature increasing. The tting correlation coe cients of modi ed exponential aging model are all greater than 0.97, which can better describe the changes of MNA content and maximum elongation of CMDB propellant. The storage life of CMDB at 298.15K is estimated to be 19.19 years and 18.09 years, respectively. The validity of the correlation function between the maximum elongation and the stabilizer depletion is veri ed. The overall error is less than 15%, which provides a reference for predicting the maximum elongation of CMDB propellant by the consumption of MNA.

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Studies on thermal stability, autoignition and stabilizer depletion for shelf life of CMDB propellants

Cited by 21 publications

References 4 publications

A Novel Method for Prediction of Propellant Shelf‐Life Based on Arrhenius Equation

A Novel Method for Prediction of Propellant Shelf‐Life Based on Arrhenius Equation

Ammonium Perchlorate, Friend or Foe?

Storage-life prediction and relationship between maximum elongation and stabilizer depletion for a composite modified double base propellant (CMDB) propellant

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