PREPARATION AND CHARACTERIZATION OF NOVEL BINDER FOR COMPOSITE SOLID ROCKET PROPELLANT | ||||
| The International Conference on Chemical and Environmental Engineering | ||||
| Article 23, Volume 6, 6th International Conference on Chemical & Environmental Engineering, May 2012, Page 1-10 PDF (327.91 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iccee.2012.35910 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Hosam E. Mostafa; I. M. Kamal | ||||
| Egyptian Armed Force. | ||||
| Abstract | ||||
| Abstract Azido hydroxy terminated polybutadiene (AHTPB) is a candidate energetic binder for composite propellants having the same properties of hydroxy terminated polybutadiene (HTPB) but has an advantage over HTPB concerning its energetic property due to presence of azide group. Thermochemical calculations were done with different AHTPB percentages and the reference HTPB to examine the effect of binder change on the specific impulse and the flame temperature which are from the important parameters for the propellant performance and gun barrel age. AHTPB prepolymer was prepared by two steps method in which hydroxy terminated polybutadiene (HTPB) is firstly saturated with bromine (Br2) at room temperature giving bromo hydroxy terminated polybutadiene (BHTPB). Secondly, the formed BHTPB undergo substitution reaction using sodium azide (NaN3) at 70ºC for 30 hours on batches giving AHTPB with density of 0.967 g/cm3 and viscosity of about 5000 cP. The prepolymer was successfully prepared with conversion of (15%) and characterized by using some techniques such as infrared spectroscopy, elemental analysis, water content measurements and milligram equivalent (OH). | ||||
| Keywords | ||||
| Azido hydroxy terminated polybutadiene; Binder Systems; Thermochemical calculations; preparation of AHTPB; Caracterization of Prepolymer; Composite solid rocket propellants | ||||
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