Improved Adhesion Performance of Polyamid Fibers in Fiber-Reinforced Composites

Abstract

The high tensile properties of composites reinforced by poly-p- phenylene terephthalamide fibers (PPTA), sold under the trade name of Kevlar by Du Pont, are well known. However, the transverse properties are relatively low compared to composites utilizing other high modulus fibers. This has been attributed to poor adhesion between the fiber and the matrix, as evidenced by the observation of splitting and bare fibers at the fracture surfaces. The three main adhesion mechanisms include intermolecular interactions (2-6 kcal), primary chemical bonds (60-100 kcal), and mechanical interlocking (variable).

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Document Details

Document Type
Technical Report
Publication Date
May 09, 1989
Accession Number
ADA207979

Entities

People

  • Jack L. Koenig
  • Shari L. Tidrick

Organizations

  • Case Western Reserve University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Adhesion
  • Carboxylic Acids
  • Chemical Bonds
  • Chemical Reaction Properties
  • Classification
  • Composite Materials
  • Fiber Reinforced Composites
  • Frequency
  • Information Exchange
  • Information Processing
  • Mechanical Properties
  • Military Research
  • Spectra
  • Spectroscopy
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Quantum Chemistry
  • Reinforced Composite Materials