Interface Mobility and Its Effect on Interlaminar Fracture Toughness in Glass Fiber Reinforced Epoxy Laminates

Abstract

The relationship between the interface of glass fabric/resin and the resultant composite Mode I delamination fracture toughness in a glass fabric laminate was investigated using a double cantilever beam (DCB) specimen. The treatment of glass with silane coupling agents has been shown to improve the mechanical properties of the composite as a function of the type of coupling agent used. Two silane coupling agents, gamma-aminopropyltriethoxysilane (APS) and gamma-aminobutyltriethoxysilane (ABS) were used. These have similar chemistry, but differ in Either coupling agent improved the interfacial properties. The critical energy release rate Gu sub, of APS treated composites was higher than that of ABS treated composites. Thus we conclude that bulk structural properties are a function of the microscopic interfacial properties, including the dynamics of the coupling agent layer.

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Document Details

Document Type
Technical Report
Publication Date
Jul 09, 1994
Accession Number
ADA281739

Entities

People

  • Frank D. Blum
  • Timothy W. Wang

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Cantilever Beams
  • Chemical Reactions
  • Chemistry
  • Composite Materials
  • Delamination
  • Epoxy Laminates
  • Fibers
  • Glass Fibers
  • Laminates
  • Materials
  • Materials Science
  • Mechanical Properties
  • Mobility
  • Physical Properties
  • Structural Properties
  • Toughness

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Quantum Chemistry
  • Surface Coatings Technology.