Study of Chemical Stability and Kinetic Parameters of Pyrotechnic Formulations Containing Red Phosphorus

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Ghaieni H. R.; HOSSEINI S.G.; KOZEHGARI GH.; Mansoubie Fard M.

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Journal: JOURNAL OF ENERGETIC MATERIALS Year:2019 | Volume:14 | Issue:2 (42) Page(s): 95-103

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Title

Study of Chemical Stability and Kinetic Parameters of Pyrotechnic Formulations Containing Red Phosphorus

Author(s)

Ghaieni H. R. | HOSSEINI S.G. | KOZEHGARI GH. | Mansoubie Fard M. | Issue Writer Certificate

Keywords

Red PhosphorusQ1

Chemical StabilityQ1

Acid-base TitrationQ1

Kinetic ParametersQ1

Abstract

Red Phosphorus (RP) is one of the most important allotropes of phosphorus with extensive military and civil pyrotechnics applications. During maintenance of Red Phosphorus, its decomposition generates phosphorus acid family and poisonous phosphine gas. One of the conventional method for evaluation of Chemical Stability of Red Phosphorus munitions is evolved phosphine measurement. In the present study, four samples of coated Red Phosphorus with ethyl cellulose, nitrocellulose and their combination with hydroxyl-terminated poly-butadiene (HTPB) were prepared. Then, the stability of all samples were characterized via water absorption measurment (as an effective parameter for Chemical Stability of Red Phosphorus) and evolved phosphine estimation(as ml of NaOH consumption in titration). Ethyl cellulose-HTPB coated sample exhibited best water absorption (37 and 38. 8% reduction in water absorption at 24 and 48 hours compared to blank sample) and phosphine generation results (70% reduction in phosphine generation compared to blank sample) during Chemical Stability test compared to other samples. Then the aging process of this sample was evaluated and compared in a month with blank Red Phosphorus. Finally two pyrotechnic formulations containing blank and coated Red Phosphorus have been evaluated for phosphine release and thermal analysis(for calculation Kinetic Parameters according to Kissinger and Starink equations). The peak temperatures for both formulations containing Red Phosphorus appear in the range of 304 to 321, depending on the heating rate.

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APA: Copy

Ghaieni, H. R., HOSSEINI, S.G., KOZEHGARI, GH., & Mansoubie Fard, M.. (2019). Study of Chemical Stability and Kinetic Parameters of Pyrotechnic Formulations Containing Red Phosphorus. JOURNAL OF ENERGETIC MATERIALS, 14(2 (42) ), 95-103. SID. https://sid.ir/paper/405512/en

Vancouver: Copy

Ghaieni H. R., HOSSEINI S.G., KOZEHGARI GH., Mansoubie Fard M.. Study of Chemical Stability and Kinetic Parameters of Pyrotechnic Formulations Containing Red Phosphorus. JOURNAL OF ENERGETIC MATERIALS[Internet]. 2019;14(2 (42) ):95-103. Available from: https://sid.ir/paper/405512/en

IEEE: Copy

H. R. Ghaieni, S.G. HOSSEINI, GH. KOZEHGARI, and M. Mansoubie Fard, “Study of Chemical Stability and Kinetic Parameters of Pyrotechnic Formulations Containing Red Phosphorus,” JOURNAL OF ENERGETIC MATERIALS, vol. 14, no. 2 (42) , pp. 95–103, 2019, [Online]. Available: https://sid.ir/paper/405512/en

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