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

E. M. Woo; K. L. Mao

doi:10.1002/pc.10672

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

E. M. Woo
, K. L. Mao

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

30 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. G_IC was improved from 165 to 540 J/m² (at 1 mm/min crosshead speed). G_IIC 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 language	English
Pages (from-to)	799-805
Number of pages	7
Journal	Polymer Composites
Volume	17
Issue number	6
DOIs	https://doi.org/10.1002/pc.10672
Publication status	Published - 1996

All Science Journal Classification (ASJC) codes

Ceramics and Composites
General Chemistry
Polymers and Plastics
Materials Chemistry

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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.",

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AB - 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.

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

Abstract

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