نوع مقاله: تالیفی
نویسندگان
1 دانشگاه جامع امام حسین (ع) - دانشکده و پژوهشکده فنی و مهندسی - گروه منهندسی شیمی
2 تهران- دانشگاه جامع امام حسین(ع)-دانشکده و پ‍‍‍‍‍‍ژوهشکده فنی و مهندسی– گروه مهندسی شیمی
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
Glycidyl Azide Polymer (GAP) is one of the most potential energetic binders for future high energy composite solid propellants. An energetic insensitive polymeric binder is one of the important ingredients in energetic composite propellants formulations. The polymeric binders used in composite solid propellants are typically cross linked polyurethane elastomeric networks that provide a binding matrix for solids such as oxidizers and metal fuels with a plasticizer and other minor additives. The energetic properties of the binder are due to the azido groups which are decomposed under combustion conditions and convert to nitrogen gas. In the present paper, the mechanisms of GAP curing by isocyanate and isocyanate-free curing agents have been investigated. Our studies showed that the samples curing with isocyanate and isocyanate-free curing agents has a good tensile strength and elongation but the curing time varies depending on the type of curing agent used. GAP curing with isocyanate curing agent during storage showed improved cracking, whereas GAP sample cooked with isocyanate-free curing agent (BPS) achieved better curing without any cavities and bubbles during storage.
Keywords: Curing Agents, Isocyanates, Propargyl Succinate, Glycidyl Azide Polymer, Ammonium dinitramide, Green propellant, Isocyanate-Free.
کلیدواژهها [English]
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