بررسی اثر رطوبت محیط تولید و محیط کهولت بر خواص پیشرانه جامد مرکب

hazratpour, amir; ashrafi, mahdi

Volume 19, Issue 1 (3-2024) مواد پرانرژی 2024, 19(1): 15-24 | Back to browse issues page

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hazratpour A, ashrafi M. بررسی اثر رطوبت محیط تولید و محیط کهولت بر خواص پیشرانه جامد مرکب. مواد پرانرژی 2024; 19 (1) :15-24
URL: http://isaem.ir/article-1-1510-en.html

بررسی اثر رطوبت محیط تولید و محیط کهولت بر خواص پیشرانه جامد مرکب

Amir Hazratpour

, Mahdi Ashrafi ^*

, mhdashrafi@yahoo.com

Abstract: (521 Views)

Moisture of production and aging environment is one of the most important factors affecting solid composite propellant properties. In this research by designing necessary experiments, effect of production and aging environment moisture in different levels on rheological, mechanical, ballistic and aging properties of solid composite propellant and also mechanism of affecting moisture on existent interactions in its structure were assessed. With doing experiment it was specified, producing propellant in the environment up to 50 % humidity doesn’t have noticeable effect on primary properties of it. But producing propellant in environment with (80-90) % humidity cause to decrease of ultra tensile strength in content of 35 % and strain at ultra tensile strength in content of 17 % toward base sample in fourteenth day of cure. In aging of propellant in the environment with (50-70) % humidity in time of 5 months, ultra tensile strength in content of 49 % and strain at ultra tensile strength in content of 33 % decreased. Also with attention to results got from burning rate determining experiment, aging of propellant in environment with saturated moisture for long time cause to reducing burning rate in same pressures. Scanning electron microscopy (SEM) photos of sample aged in saturated moisture and result got from it, shows that the main reason of reducing mechanical properties are debonding of interaction between AP with binder matrix and intense abscission of AP from sample.

Keywords: Composite Solid Propellant, Moisture, Production Environment, Aging Environment, Mechanical Properties, Burning Rate, Interactions.

Full-Text [PDF 1387 kb] (22 Downloads)

Type of Study: Research | Subject: سنتز، آناليز، کنترل کيفيت، فرمولاسيون و فرايندهاي توليد مواد پرانرژی (منفجره، پيروتکنيک و پيشرانه)
Published: 2024/11/16