Annealing Studies on a Fully Cured Epoxy Resin: Effect of Thermal Prehistory, and Time and Temperature of Annealing

Abstract

The dynamic mechanical behavior at about 1 Hz of a fully cured epoxy resin (maximum glass transition temperature, T ca. 170 C) has been studied during and after isothermal annealing in terms of the influence of thermal prehistory, time of annealing, and temperature of annealing (Ta). Annealing temperatures ranged from Tg-15 Tg-130 C. The rate of isothermal annealing was observed to decrease by a decade for each decade increase of annealing time when the material was far from equilibrium. Annealing at high temperatures did not measurably affect the material properties during cooling; similarly the effect of annealing at lwo temperatures was not measurable during heating. Keywords: Cure; Vitrification; Glass transition; Annealing; Thermal prehistory; Epoxy; Dynamic mechanical.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1989
Accession Number
ADA205875

Entities

People

  • John K. Gillham
  • K. P. Pang

Organizations

  • Princeton University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Amorphous Materials
  • Chemical Engineering
  • Chemistry
  • Composite Materials
  • Engineering
  • Epoxy Resins
  • Glass Transition Temperature
  • High Temperature
  • Materials
  • Mechanical Properties
  • Military Research
  • New York
  • Plastics
  • Polymers
  • Resins
  • Scanning
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Engineering.