ارتباط  فرمولاسیون و رفتار آسودگی در  پیشرانه‌های دوپایه و دوپایه بهبود‌یافته: بررسی رفتار دینامیکی-مکانیکی

Mahdavi, Hossein; Tarlani, Ali Akbar; Golriz, Mahdi

Volume 14, Issue 2 (6-2019) مواد پرانرژی 2019, 14(2): 73-81 | Back to browse issues page

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Mahdavi H, Tarlani A A, Golriz M. ارتباط فرمولاسیون و رفتار آسودگی در پیشرانه‌های دوپایه و دوپایه بهبود‌یافته: بررسی رفتار دینامیکی-مکانیکی. مواد پرانرژی 2019; 14 (2) :73-81
URL: http://isaem.ir/article-1-1241-en.html

ارتباط فرمولاسیون و رفتار آسودگی در پیشرانه‌های دوپایه و دوپایه بهبود‌یافته: بررسی رفتار دینامیکی-مکانیکی

Hossein Mahdavi

, Ali Akbar Tarlani

, Mahdi Golriz ^*

Iranian Space Research Center , m.golriz@isrc.ac.ir

Abstract: (2010 Views)

Abstract

In the present work, the influence of formulation changes obtained by different compositions of double-base and modified double-base propellants, on the relaxation behavior was investigated using the dynamic-mechanical analysis techniques. In order to identify the dynamic-mechanical behavior and characterize the type of different relaxations and triple transition temperatures in double-base and composite modified double base (CMDB) propellants at the present work, DMTA test was used. According to the results, in spite of relaxation temperatures T_α and T_β for the CMDB propellants, the other relaxation temperature Tᵧ was not detected. By addition of energetics nitramines (RDX) to the modified double-base propellant, relaxation temperatures were increased. Decrease in values of nitroglycerine, also has the same effect on relaxation temperatures. The results were shown that for the samples containing RDX, the compression modulus was increased and for a more RDX content propellant sample, elongation at break was decreased.

Keywords: Modified Double-Base Propellant, Dynamic-Mechanical Analysis, Relaxation, Compression Modulus

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Type of Study: Research | Subject: سنتز، آناليز، کنترل کيفيت، فرمولاسيون و فرايندهاي توليد مواد پرانرژی (منفجره، پيروتکنيک و پيشرانه)
Published: 2020/05/18