Processing Fundamentals for Intercalation of Graphite Fibers.

Abstract

Chemical kinetics of intercalation of carbon/graphite fibers with HNO sub 3/AsF sub 5 was determined. Fiber electrical conductivity increased by about an order of magnitude. Humidity testing of the bare fiber caused deintercalation as expected but the intercalated fibers were successfully incorporated into epoxy matrix composites which maintained their properties with time at room temperature. The expected increase of IR reflectivity at 10.6 microns for the intercalated fiber composite was not obtained. The remarkable observation was made that the electrical conductivity of composites was increased by a factor of about one hundred when filled to 55% with intercalated fibers having a seven fold increase in conductivity. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1979
Accession Number
ADA072943

Entities

People

  • F. Lincoln Vogel
  • William C. Forsman

Organizations

  • University of Pennsylvania

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Chemical Analysis
  • Chemistry
  • Composite Material Fabrication
  • Composite Materials
  • Conductivity
  • Electrical Conductivity
  • Electrical Properties
  • Epoxy Composites
  • Fibers
  • Graphitic Materials
  • High Temperature
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Measurement
  • Oxidation
  • Physical Properties

Fields of Study

  • Materials science

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Optical Physics and Photonics.
  • Reinforced Composite Materials