Characterization of aging behavior of butacene® based composite propellants by loss factor curves
- Seyidoglu, T.
- Bohn, M.A.
DOIAbstract
Butacene® is a polymeric binder with ferrocenyl groups chemically bonded to HTPB backbone. Through incorporation in the AP−Al composite propellant formulation, it leads to high burning rates (BR) >20 mm/s at 7 MPa, and low pressure exponents n<0.5, allowing more flexibility to the rocket design, keeping the characteristics (process, mechanical properties, pot-life) of HTPB binder formulations together with a lower vulnerability (IM) contribution by Butacene®. The key molecular level characteristic of such HTPB based elastomeric binder systems of solid composite rocket propellants (SCRP) is the glass-rubber transition region, which is mainly defined by the molecular mobility of the components in the polymeric network during the transition fr...
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