Thermal Oxidation-Polymeric Coating Treatments of High Modulus Graphite Fibers.

Abstract

The interfacial bond between polyvinyl alcohol (PVA) and water-sized high modulus graphite fibers and an epoxy matrix was improved by thermal oxidation of the fiber surface by a propane-generated flame followed by application of various types of thermoplastic coatings and subsequent impregnation with the epoxy resin solution. This approach was followed in an attempt to obtain a 'ductile' fiber-matrix interface. The mechanical property results indicated that improvement in composite interlaminar shear strength was attained without apparent loss of fiber strength (compared to composites fabricated with the same types of yarn, but untreated). Also, scanning electron microscopy was utilized to obtain photomicrographs of treated fibers and fractured composites. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1972
Accession Number
AD0906438

Entities

People

  • R. J. Dauksys

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Biodegradable Plastics
  • Composite Materials
  • Electron Microscopy
  • Epoxy Resins
  • Graphitic Materials
  • Mechanical Properties
  • Microscopy
  • Oxidation
  • Plastics
  • Polyvinyl Alcohol
  • Reinforced Plastics
  • Resins
  • Scanning Electron Microscopy
  • Shear Strength

Fields of Study

  • Materials science

Readers

  • Polymer Science and Engineering.
  • Reinforced Composite Materials

Technology Areas

  • Microelectronics