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 active energetic binders used in high
energy composite solid propellants in the future. An energetic insensitive polymeric
binder is one of the most important ingredients in energetic composite propellants
formulations. The polymeric binders used in composite solid propellants are usually cross
linked polyurethane elastomers that provide a binding matrix for solids such as oxidizers and
metal fuels with a plasticizer and other additives in small amounts. The energetic properties
of the binder are due to the azido groups that decompos under combustion conditions and
convert to nitrogen gas. In the present paper, the GAP curing mechanism with isocyanate
and isocyanate-free curing agents have been investigated. Studies show that cured samples
curing with isocyanate and isocyanate-free curing agents have good tensile strength and
elongation but the curing time varies depending on the type of curing agent used. Cured
GAP with isocyanate curing agent during storage shows cracking propagation, while GAP
sample cured with isocyanate-free curing agent (BPS) yields better curing without any
cavities and bubbles during storage.
کلیدواژهها [English]