Large-Diameter Carbon-Composite Monofilaments.

Abstract

Large-diameter carbon composite monofilaments with high strength and high modulus were produced by pregging multifiber carbon bundles with suitable organic resins and pyrolysing them together. Two approaches were developed to increase the utilization of fiber tensile strength by minimizing stress concentration defects induced by dissimilar shrinkage during pyrolysis. These were matrix modification to improve char yield and strain-to-failure and fiber-matrix copyrolysis to alleviate matrix cracking. Highest tensile strength and modulus were obtained by heat treatments to 2873 deg. K to match fiber and matrix strain-to-failure and develop maximum monofilament tensile-strength and elastic modulus.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1974
Accession Number
ADA307090

Entities

People

  • P. C. Pinoli
  • R. F. Karlak
  • W. G. Bradshaw

Organizations

  • Lockheed Martin Missiles and Space

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Carbon Carbon Composites
  • Carbon Fibers
  • Chemical Synthesis
  • Chemistry
  • Fiber Spinning
  • Fibers
  • Graphitic Materials
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Working
  • Modulus Of Elasticity
  • Stress Strain Relations
  • Tensile Strength

Readers

  • Reinforced Composite Materials