Influence of Moisture Absorption on the Mechanical Properties in the Laminated Composites

J. Ocean Eng. Technol. 2000;14(3):90-99.

Moon Chang-Kwan,Choi Hee-Lark,Lee Bong

Department of Material Science and Engineering Pukyong National University,Department of Material Science and Engineering Pukyong National University,Department of Material Science and Engineering Pukyong National University

적층형 복합재료의 기계적 성질에 미치는 수분의 영향

문창권,최희락,이봉

부경대학교 공과대학 재료공학부,부경대학교 공과대학 재료공학부,부경대학교 공과대학 화학공학부

Keywords: Moisture environment, Weight gain of water, Cross laminated carbon fiber/epoxy composites, Immersion time

핵심용어: 수분환경, 수분흡수율, 직교 적층형 탄소섬유/에폭시 복합재료, 침지시간

Abstract

This study has been investigated about the influence of moisture environment properties in the unidirectional and cross laminated carbon fiber/epoxy and glass fiber/epoxy composites. As a results, it was found that the weight gain of water increased with the immersion time and the mechanical properties were decreased with the weight gain of water. And it was also shown that the mechanical properties of carbon fiber/epoxy laminates were better than those of glass fiber/epoxy laminates. And a gap of the mechanical properties between the two kinds of laminates was increasing with the immersion time in distilled water of 80$^{circ}C $. Mechanical properties which decreased by moisture absorption in the CF and GF reinforced laminates were recovered up to some extent by drying in oven at 80$^{circ}C $ for 10 days.