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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Druckformat: 2150-766X
ISSN Online: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2013003803
pages 375-388

EFFECT OF BALLISTIC MODIFIERS ON THE BURN RATE OF EXTRUDED COMPOSITE PROPELLANT FORMULATIONS BASED ON THERMOPLASTIC ELASTOMERIC BINDER

K. S. Mulage
High Energy Materials Research Laboratory, Sutarwadi, Pune-411 021, India
A. K. Mishra
High Energy Materials Research Laboratory, Sutarwadi, Pune-411 021, India
R. N. Patkar
High Energy Materials Research Laboratory, Sutarwadi, Pune-411 021, India
S. H. Kharat
High Energy Materials Research Laboratory, Sutarwadi, Pune-411 021, India
Pawan Kumar Khanna
Defence Institute of Advanced Technology, Pune, 411025, India
Seema Dilip Kakade
High Energy Materials Research Laboratory, Pune, 411021, India

ABSTRAKT

The effect of ballistic modifiers on the burn rate of extruded composite propellant (ECP) formulations primarily based on ammonium perchlorate (AP) as oxidizer, aluminum (Al) as metallic fuel, and thermoplastic polyurethane, viz., Irostic® as binder, has been investigated. The ballistic modifiers, viz., iron oxide (Fe2O3), copper chromite (CuCr2O4), and strontium carbonate (SrCO3), were studied in the concentration varying from 0.2 to 1.0 part above 100 parts of base composition. The results obtained reveal that the burn rate increases with increase in the concentration of Fe2O3 and CuCr2O4. Maximum burn rate enhancement is observed with 1 part of Fe2O3, which is of the order of 130%. The results are discussed in detail in the light of thermal decomposition data generated on polymer and propellant compositions using ballistic modifiers.


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