Thermoplastic Elastomers as LOVA Binders.

Abstract

The energy balance type of approach to modelling the debonding behavior of highly filled composites such as propellants described in earlier reports is being more fully developed. This approach equates the change in strain energy of a sample during debonding to the work necessary to create new surfaces on the debonded particles. A high pressure gas dilatometer has been constructed and was recently tested for the first time. This instrument concurrently measures stress and volume changes which occur in a sample during uniaxial extension. Superimposed hydrostatic pressures of up to 1000 psi may be used. It appears to operate properly, and is sensitive to small changes in pressure and load. Atmospheric testing of samples is scheduled to being immediately. The bulk synthesis of polyurethane from tolylene 2,4-diisocyanate and diols or triols of poly (propylene oxide) to form void-free samples was accomplished after some trouble.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1987
Accession Number
ADA185865

Entities

People

  • C. P. Lillya
  • H. H. Winter
  • James C. Chien
  • Richard J. Farris

Organizations

  • University of Massachusetts Amherst

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Block Copolymers
  • Body Weight
  • Chemistry
  • Chlorides
  • Composite Materials
  • Copolymers
  • Electron Microscopy
  • Engineering
  • High Pressure
  • Hydrostatic Pressure
  • Materials
  • Materials Science
  • Microscopes
  • Polymeric Films
  • Polymers
  • Scattering

Readers

  • Polymer Science and Engineering.
  • Rocket Propulsion.
  • Structural Health Monitoring of Composite Structures.