Role of fiber/matrix interphases on dielectric, friction, and mechanical properties of glass fiber-reinforced epoxy composites

This study compares the mechanical, tribological, and dielectric properties of glass fiber-reinforced epoxy (GFRE), presenting various fiber/matrix adhesions. Three GFRE composites were studied. The only difference between them is in the initial preparation of fibers which is intentionally simplifie...

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Bibliographic Details
Published in:Journal of composite materials 2012-01, Vol.46 (2), p.131-144
Main Authors: Kechaou, B., Salvia, M., Benzarti, K., Turki, C., Fakhfakh, Z., Tréheux, D.
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Dielectric properties
Diffusion
Engineering Sciences
Exact sciences and technology
Fibers
Forms of application and semi-finished materials
Friction
Glass fiber reinforced plastics
Glass-epoxy composites
Materials
Mechanical properties
Mechanics
Mechanics of materials
Physics
Polymer industry, paints, wood
Technology of polymers
Trapping
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Summary:This study compares the mechanical, tribological, and dielectric properties of glass fiber-reinforced epoxy (GFRE), presenting various fiber/matrix adhesions. Three GFRE composites were studied. The only difference between them is in the initial preparation of fibers which is intentionally simplified compared to the complex sizings used in industry. Thus, fibers treated with aminosilane or silicone coupling agents were compared with fibers simply washed with deionized water. The dielectric measurements show the leading role of interfacial bonding in the trapping or diffusion of electric charges. To obtain high mechanical properties, a fiber treatment that contributes to the diffusion of electric charges along the fiber/matrix interface is preferred. In addition, after friction, a modification of the dielectric properties in all materials is observed, and the trapping or the diffusion of the charges along the interfaces can make it possible to lower the friction coefficient, or the wear.
ISSN:0021-9983
1530-793X
DOI:10.1177/0021998311410485