Premium
Evaluation of interlaminar‐toughened poly(etherlmide)‐modified epoxy/carbon fiber composites
Author(s) -
Woo E. M.,
Mao K. L.
Publication year - 1996
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.10672
Subject(s) - materials science , composite material , epoxy , toughening , carbon fibers , fiber , composite number , toughness
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. G IC was improved from 165 to 540 J/m 2 (at 1 mm/min crosshead speed). G IIC was improved more significantly from 290 to 1300 J/m 2 . It is believed that these values could be further improved if the processing cycle were to be optimized.