EVALUATION OF HIGH-ENERGY BINDER.

Abstract

Work was continued on studying the cure problem of PBEP propellants. It now appears that a rapid reaction between the isocyanate curative and triol crosslinkers is the source of difficulty. It appears possible that this problem became enhanced by a change in PBEP during synthesis scaleup that resulted in a lower reactivity of the hydroxyl groups. Further investigations of the impact sensitivity of PBEP and PBEP propellants were made. No change in previously reported data was found, and it was concluded that neither PBEP nor propellant was unduly impact sensitive. Good cures were obtained on LMH-1/PBEP propellant. Stress of 121 psi and strain of 52% were obtained on an ambient cured system. Preparation of HAP-containing propellant requires a dry atmosphere throughout the complete operation. The cured propellant also must be protected from moisture. Surveillance studies of 2-in. cubes have indicated that DBTDA cure catalyst has better aging characteristics. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1966
Accession Number
AD0378203

Entities

People

  • Edwin K. Ives
  • Leo K. Asaoka
  • Paul L. Allen
  • Robert M. Kumagai

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Ammonium Perchlorate
  • Catalysts
  • Chlorides
  • Contracts
  • Government (Foreign)
  • Governments
  • High Energy
  • Materials
  • Moisture
  • Perchlorates
  • Physical Properties
  • Propellants
  • Security
  • Sensitivity
  • Tensile Properties
  • Thermal Stability

Readers

  • Mathematics or Statistics
  • Polymer Science and Engineering.
  • Rocket Propulsion.