Viscoelastic Behaviour of Solid Propellants based on Various Polymeric Binders

  • N. Prabhakaran Vikram Sarabhai Space Centre, Thiruvananthapuram
  • S. S. Rao Vikram Sarabhai Space Centre, Thiruvananthapuram
  • K. N. Ninan Vikram Sarabhai Space Centre, Thiruvananthapuram
Keywords: Propellants, Polybutadiene binders

Abstract

The 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.

Author Biographies

N. Prabhakaran, Vikram Sarabhai Space Centre, Thiruvananthapuram
Vikram Sarabhai Space Centre, Propellants and Special Chemicals Group, Thiruvananthapuram
S. S. Rao, Vikram Sarabhai Space Centre, Thiruvananthapuram
Vikram Sarabhai Space Centre, Propellants and Special Chemicals Group, Thiruvananthapuram
K. N. Ninan, Vikram Sarabhai Space Centre, Thiruvananthapuram
Vikram Sarabhai Space Centre, Propellants and Special Chemicals Group, Thiruvananthapuram
Published
2013-01-01
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
Section
Special Issue Papers