Thermal Characteristics of 3501-6/AS and 5208/T300 Graphite Epoxy Composites.

Abstract

The thermal characteristics of two graphite epoxy composites for use as aircraft structural components have been investigated. The activation energies and heats of reaction for pyrolysis of the composites were found to be 19.7 kcal/mole and -18.4 cal/g for 3501-6/AS and 25.0 kcal/mole and -20.4 cal/g for 5208/T300, respectively. The kinetic parameters enable prediction of thermal degradation at flight temperatures. In fire fighting, bulk material temperatures must be reduced well below 300 C to prevent continuation of exothermic pyrolysis reactions. It was also found that differential scanning calorimetry provides a more sensitive test of composite cure than reflectance infrared measurements. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1979
Accession Number
ADA071067

Entities

People

  • Robert F. Kubin

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Bulk Materials
  • Calorimetry
  • Chemical Reaction Properties
  • Chemical Reactions
  • Combustion
  • Composite Materials
  • Energy
  • Epoxy Composites
  • Exothermic Reactions
  • Graphite Epoxy Composites
  • Graphitic Materials
  • Heat Of Activation
  • Materials
  • Materials Processing
  • Pyrolysis
  • Reflectance

Fields of Study

  • Materials science

Readers

  • Fire Suppression Systems Design.
  • Materials Science and Engineering.
  • Surface Coatings Technology.