MICROSCOPIC AND MICROCHEMICAL STUDY OF AGED PROPELLANT GRAINS.

Abstract

Aging sites from a Polaris Cycling Unit were subjected to alkaline hydrolytic degradation and analysis of the reaction product revealed some hydroxyl prepolymer, confirming that crosslinked polyurethane polymer is an important organic component of aging sites. Procedures which have been developed for the chemical analysis of a polyurethane propellant were applied to a PBAN-epoxide propellant which had been stored at ambient conditions for 4 years. This propellant sample contained low molecular weight binder fragments. Evaporative loss of this low molecular weight material could be a cause for altering of mechanical properties upon long storage. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1968
Accession Number
AD0831812

Entities

People

  • Anthony J. Di Milo
  • Henry Moe

Organizations

  • Aerojet Rocketdyne Holdings

Tags

DTIC Thesaurus Topics

  • Chemical Analysis
  • Composite Materials
  • Degradation
  • Energetic Materials
  • Films
  • Macromolecules
  • Materials
  • Mechanical Properties
  • Molecular Weight
  • Molecules
  • Plastics
  • Polymers
  • Polyurethanes
  • Propellant Grains
  • Propellants

Readers

  • Agricultural Chemistry/Soil Science
  • Polymer Science and Engineering.
  • Rocket Propulsion.