Suppression of Reactivity Changes in Poly bd (trade name) R-45M Resin

Abstract

Poly bd R-45M resin, a hydroxyl terminated homopolymer of 1,3- butadiene, is a primary component in the binder for many solid propellant systems. The aging characteristics of this resin are such that its rate of reactivity with an isocyanate may increase during storage for prolonged time periods at ambient temperatures. As a result, the pot lives of propellant mixtures prepared from the same lot of Poly bd R-45M resin may differ significantly over period of months. Under certain processing conditions, this reactivity difference may pose problems for the formulator. The addition of triphenylphosphine to the Poly db R-45M resin has been found to prevent these reactivity changes.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1985
Accession Number
ADP004988

Entities

People

  • Harry R. Hinney
  • John R. Murphy

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acetic Acid
  • Aerospace Industry
  • Chelate Compounds
  • Decomposition
  • Degradation
  • Free Radicals
  • Isocyanates
  • Low Temperature
  • Molecular Weight
  • Oxidation
  • Oxygen
  • Phosphine
  • Physical Properties
  • Propellants
  • Reactivities
  • Solid Propellants
  • Viscosity

Readers

  • Military Logistics and Supply Chain Management
  • Polymer Science and Technology
  • Rocket Propulsion.