Interlaminar morphology effects on fracture resistance of amorphous polymer-modified epoxy/carbon fibre composites

E. M. Woo, K. L. Mao

研究成果: Article同行評審

26 引文 斯高帕斯(Scopus)

摘要

Effects of three amorphous thermoplastic polymers used as interlaminar toughening particles in carbon fibre/epoxy laminated composites have been compared. Mode I and mode II delamination fracture toughness were characterized using double cantilever beam and end-notched flexure specimens, respectively, and the delaminated surfaces of specimens were examined using scanning electron microscopy to investigate the interlaminar morphology after fracture. This study showed that the poly(ether imide)-modified and phenoxy-modified systems exhibited similar improvement. The interlaminar morphology in these two systems is compared and discussed. Surprisingly, incorporation of bisphenol-A polycarbonate (PC), with its solvent-induced crystallinity during particulate preparation, induced only very little improvement in the modified composite system. The microstructural morphology at the PC/epoxy interlaminar region showed insoluble chunks of PC domains with crystals, the brittleness and lack of wetting with the epoxy phase adversely affected the macroscopic mechanical fracture behaviour.

原文English
頁(從 - 到)625-631
頁數7
期刊Composites Part A: Applied Science and Manufacturing
27
發行號8 PART A
DOIs
出版狀態Published - 1996

All Science Journal Classification (ASJC) codes

  • 陶瓷和複合材料
  • 材料力學

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