Viscoelastic Behaviour of Solid Propellants based on Various Polymeric Binders
Keywords: Propellants, Polybutadiene binders
AbstractThe dynamic mechanical properties of different binders and corresponding propellants are studied in terms of storage modulus and loss tangent. The binders investigated are HTPB, CTPB, PBAN, HEF-20 and ISRO polyol. The viscoelastic behaviour is investigated using Rheovibron viscoelastometer at 35 Hz covering a wide temperature range (-100 degree centigrade to 100 degree centigrade). The properties of the binder and corresponding propellant are compared in terms of parameters, tan delta/sub max/, T/sub g/ and the trend of their master relaxation modulus curves. It is found that polybutadiene binders exhibit lowest T/sub g/ (around -60 degree centigrade) and ISRO polyol the highest (near -20 degree centigrade). The propellants have higher moduli than the binders at any temperature. The master relaxation modulus curve is influenced by the type of propellant.
How to Cite
PrabhakaranN., RaoS., & NinanK. (2013). Viscoelastic Behaviour of Solid Propellants based on Various Polymeric Binders. Defence Science Journal, 45(1), 17-23. https://doi.org/10.14429/dsj.45.4097
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