یک روش ساده برای شناسایی و اندازه گیری  اصلاح‌کننده‌های بالستیک در پیشرانه‌های جامد دو پایه

Zarei, Ali Reza; Mardi, Kobra; Nadalinia Chari, Peyman

Volume 19, Issue 2 (8-2024) مواد پرانرژی 2024, 19(2): 71-79 | Back to browse issues page

‎ 20.1001.1.17353629.1403.19.2.2.3

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Zarei A R, Mardi K, Nadalinia Chari P. یک روش ساده برای شناسایی و اندازه گیری اصلاح‌کننده‌های بالستیک در پیشرانه‌های جامد دو پایه. مواد پرانرژی 2024; 19 (2) : 2
URL: http://isaem.ir/article-1-1513-en.html

یک روش ساده برای شناسایی و اندازه گیری اصلاح‌کننده‌های بالستیک در پیشرانه‌های جامد دو پایه

Ali Reza Zarei ^*

, Kobra Mardi

, Peyman Nadalinia Chari

Malek Ashtar University of Technology , zarei1349@gmail.com

Abstract: (293 Views)

Copper β-resorcylate (CuR₂₎, lead β-resorcylate (PbR₂₎, and lead oxide (PbO) are among the most widely used compounds as Ballistic Modifiers Therefore, their identification and determination of them in double based solid propellants (DB propellants) will be of great importance in propellants formulation. So, in this study a direct and validate spectrophotometric method was described for the simultaneous determination of CuR₂, PbR₂, and PbO in DB propellants. The method is based on application of three calibration sets. In the first set, the amount of CuR₂ was determined based on complex formation of Cu (II) with DDTC and absorbance measurement at 445 nm. In the second set, the amount of total lead was determined based on complex formation of Pb (II) with PAR reagent and absorbance measurement at 520 nm. Finally, in third set, from hydrolysis of CuR₂ and PbR₂ in acetic acid media, the released resorcylic acid was determined via complex formation of with Fe(III) and absorbance measurement at 526 nm. Therefore, according to the obtained data for the resorcylic acid and the obtained data from the calibration curve for the CuR₂ in the first set, the amount of PbR₂ was determined by using stoichiometric relations. Finally, the amount of PbO in DB was calculated from the obtained data for total lead in second set and obtained PbR₂. The proposed method was successfully applied to the determination of CuR₂, PbR₂ and PbO in DB propellants. The method statistically compared with ICP-AES method. There is no significant difference between the results obtained for the developed method and the ICP-AES method at the 95% confidence level.