TBA Studies of Prepreg Curing Behavior.

Abstract

The torsional braid analysis (TBA) equipment has been used as an automated torsion pendulum to characterize prepreg materials in the form of single ply strips (2-1/2 x 1/8 inch). Compared to the use of coated glass braids, the main difference was a marked weakening of the gelation mechanical damping peak in isothermal runs. However, prepreg materials consisting of epoxy resins on glass, carbon or aramid fibers were successfully run isothermally to provide gelation and vitrification times as a function of temperature, or in constant heating rate scans to reveal the T < Tg and the Tg relaxations of the uncured resins, and at higher temperatures phenomena associated with gelation, vitrification and devitrification. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1980
Accession Number
ADA092780

Entities

People

  • J. K. Gillham
  • N. S. Schneider

Organizations

  • Princeton University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aramid Fibers
  • Chemical Engineering
  • Chemical Reactions
  • Chemistry
  • Composite Materials
  • Engineering
  • Epoxy Resins
  • Glass Transition Temperature
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Military Research
  • Polymers
  • Resins
  • Rigidity

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Reinforced Composite Materials