Evaluation of interlaminar-toughened poly(ether imide)-modified epoxy/carbon fiber composites

Eamor Woo, K. L. Mao

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Amorphous poly(ether imide) has been used as interlaminar toughening particulate agent in laminated carbon fiber/epoxy composites. Mode I and Mode II delamination fracture toughness was characterized using the double cantilever beam (DCB) and end-notched flexure (ENF) specimens. The delamination surface was examined using a scanning electron microscopy (SEM) to investigate relationships between the morphology and properties. The results revealed that the PEI-modified composites exhibited a significantly increased fracture toughness, which increased with the PEI content. GIC was improved from 165 to 540 J/m2 (at 1 mm/min crosshead speed). GIIC was improved more significantly from 290 to 1300 J/m2. It is believed that these values could be further improved if the processing cycle were to be optimized.

Original languageEnglish
Pages (from-to)799-805
Number of pages7
JournalPolymer Composites
Volume17
Issue number6
DOIs
Publication statusPublished - 1996 Jan 1

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Imides
Polyetherimides
Delamination
Ether
Carbon fibers
Fracture toughness
Ethers
Toughening
Composite materials
Cantilever beams
Scanning electron microscopy
Processing
carbon fiber

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this

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Evaluation of interlaminar-toughened poly(ether imide)-modified epoxy/carbon fiber composites. / Woo, Eamor; Mao, K. L.

In: Polymer Composites, Vol. 17, No. 6, 01.01.1996, p. 799-805.

Research output: Contribution to journalArticle

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