| 초록 |
Though glycidyl azide polymer(GAP) is a well-known and promising energetic polymer, propellants based on it suffer from poor mechanical and low-temperature properties. To overcome these problems, plasticized GAP-based copolymeric binders were prepared and investigated through the incorporation of flexible-structural polyethylene glycol (PEG) and polycaprolactone(PCL) into a binder recipe under a Desmodur N-100 pluriisocyanate(N-100)/isophorone diisocyanate (IPDI) (2/1 wt ratio) mixed curative system. The increase of plasticizer content decreased the mechanical strength and modulus of binders, while the change of strain was modest. Finally, the NE plasticized GAP-based solid propellants showed enhanced mechanical and thermal properties through the incorporation of PEG or PCL. |
