Morphology and fracture properties of pure and reinforced aluminum‐epoxy adhesive joints

Research output: Contribution to journalArticle

Abstract

Several types of nonreinforced and reinforced epoxy‐aluminum adhesive joints were prepared and investigated. High modulus carbon fibers and hollow glass microspheres were used as reinforcement. The amount of curing agent, postcure time, adhesive thickness, and type and amount of reinforcement were varied throughout this study, and their effect on fracture energy was determined. Unstable crack propagation through the adhesive layer was observed. Nodular morphology typified all fracture surfaces of nonreinforced adhesive joints, indicating the existence of an inhomogeneous thermosetting network. Electron microscopic evidence was obtained for plastic flow in crack initiation and crack arrest regions. The nature of this plastic flow was discussed in terms of changes in the resin morphology.

Original languageEnglish (US)
Pages (from-to)1179-1193
Number of pages15
JournalJournal of Applied Polymer Science
Volume25
Issue number6
DOIs
StatePublished - Jun 1980

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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