This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Alvarez, V. Articles by De La Osa, O. Search for Related Content Social Bookmarking                         What's this?

Cyclic Water Absorption Behavior of Glass—Vinylester and Glass—Epoxy Composites

Research Institute of Material Science and Technology (INTEMA) — National University of Mar del Plata (UNMdP) Av. Juan B. Justo 4302 7600 Mar del Plata, Argentina

A. Vazquez

Research Institute of Material Science and Technology (INTEMA) — National University of Mar del Plata (UNMdP) Av. Juan B. Justo 4302 7600 Mar del Plata, Argentina, anvazque{at}fi.mdp.edu.ar

O. De La Osa

Naval Architecture Area — National University of Quilmes (UNQ) Av. Roque Saenz Peña 180, 1876 Bernal, Argentina

The cyclic water absorption behavior of vinylester (VE) and epoxy matrices and their composites with mat glass fiber is studied. The water absorption increases with the cycle. Degradation of the matrix occurs during fast drying and this leads to a very different behavior of the materials in both cycles. Epoxy-based materials absorb more water than VE-based ones due to their different hydrophilicity. The diffusion coefficient increases with temperature and it is higher in the second cycle than in the first one. The diffusion coefficients of VE composites are similar to that of the matrix, but the epoxy composites absorb water at a higher rate than the matrix. The mechanical properties decrease with immersion but the change in strength is higher than the modulus loss. The fiber—matrix interface presents good adhesion at low temperature but it decreases as temperature increases and there are more voids with the worst interface for the last cycle.

Key Words: water absorption • cycling process • epoxy • vinylester • composites • mechanical properties.

Journal of Composite Materials, Vol. 41, No. 10, 1275-1289 (2007)
DOI: 10.1177/0021998306067311


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?