سنتز کوپلیمر سه دسته ای پلی بوتادی‌ان کاپرولاکتون  (PCL-HTPB-PCL) و بررسی شرایط پخت آن  در حضور نرم‌کننده‌های انرژی‌زا

bayat, yadollah; oskueyan, ghasem; darhahi, narges

Volume 17, Issue 4 (12-2022) مواد پرانرژی 2022, 17(4): 211-220 | Back to browse issues page

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bayat Y, oskueyan G, darhahi N. سنتز کوپلیمر سه دسته ای پلی بوتادی‌ان کاپرولاکتون (PCL-HTPB-PCL) و بررسی شرایط پخت آن در حضور نرم‌کننده‌های انرژی‌زا. مواد پرانرژی 2022; 17 (4) :211-220
URL: http://isaem.ir/article-1-1461-en.html

سنتز کوپلیمر سه دسته ای پلی بوتادی‌ان کاپرولاکتون (PCL-HTPB-PCL) و بررسی شرایط پخت آن در حضور نرم‌کننده‌های انرژی‌زا

Yadollah Bayat ^*

, Ghasem Oskueyan

, Narges Darhahi

maleke ashtar university of technology , y_bayat@yahoo.com

Abstract: (1328 Views)

Hydroxyl Terminated Polybutadiene (HTPB) is one of the most common and widely used binders that have high solid loading and good mechanical property. A disadvantage of this binder is non-polarity, which reduces its compatibility with energetic and polar plasticizers, and oxygen balance of HTPB is very negative. Polycaprolactone is a polyester binder that has a polar structure and is compatible with polar plasticizer. Also, due to polyester structure, its oxygen balance is more suitable than HTPB, therefore, by combining these two binders as a copolymer, the disadvantages of HTPB are eliminated and its advantages are preserved. This copolymer is a polyol-polyester that is cured by di-isocyanates. Triblock copolymer of The PCL-HTPB-PCL is made by ring opening polymerization of caprolactone by HTPB as a macro initiator. This copolymer w:::as char:::acterized by (FT-IR) and ¹H-NMR spectroscopy. The investigation of the curing conditions showed that the copolymers cured with IPDI and N100 isocyanate in a ratio of 80 to 20 had suitable conditions. PCL-HTPB-PCL copolymer was found to be more compatible with Bu-NENA and TEGDN plasticizer than BTTN and TMETN.

Keywords: Propellant, Binder, HTPB, Polycaprolactone, Curing, Plasticizer.

Full-Text [PDF 1690 kb] (37 Downloads)

Type of Study: Research | Subject: سنتز، آناليز، کنترل کيفيت، فرمولاسيون و فرايندهاي توليد مواد پرانرژی (منفجره، پيروتکنيک و پيشرانه)
Published: 2023/12/14