Modification of Propellant Binder Network for Improvement of Mechanical Properties

Abstract

The blending of long straight chain hydroxy-terminated prepolymers with branched shorter chain hydroxy-terminated prepolymers yields cured rubbers, whether containing solid fillers or not, that have large improvements in strain capability compared to short chain prepolymer rubbers. Also, the stress capability of the cured rubbers is improved compared to the long chain prepolymer rubbers. Polyethylene glycol 8000 (PEG 8000) was successfully blended with glycidyl azide polymer (GAP) and polydinitropropyl acrylate. Large equivalent weight lithium initiated, hydroxy-terminated polybutadiene improved the strain capability of R-45M cured rubbers. Pentanetriisocyanate greatly improved the tensile stress and strain for PEG 8000/polydinitropropyl acrylate binder, but did not improve the PEG 8000/GAP binder. These polymer blending and triisocyanate cross-linear techniques are applicable to curable solid propellant formulations.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADB089810

Entities

People

  • C. S. Youn-kim

Organizations

  • California State University, Sacramento

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Anhydrides
  • Blending
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Materials Science
  • Mechanical Properties
  • Physical Properties
  • Polyethylene Glycols
  • Polymers
  • Propellants
  • Solid Propellants
  • Stresses
  • Synthetic Rubber
  • Tensile Properties
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Polymer Science and Engineering.