A Study on the Dielectric Properties and Mechanical characteristics of Composit Materials due to the High-Temper, and-Humidity

고온.다습하(高溫.多濕下)에서의 복합재료(複合材料)의 수요특성(特性) 및 기계적특성(機械的特性)에 관한 연구(硏究)

  • 이종호 (울산대학교 전기공학과) ;
  • 이규철 (울산대학교 전기공학과) ;
  • 황영한 (울산대학교 전기공학과) ;
  • 김희대 (울산대학교 전기공학과) ;
  • 이태식 (울산대학교 전기공학과) ;
  • 박홍태 (울산대학교 전기공학과)
  • Published : 1992.07.23

Abstract

The paper presents the effects of environment on glass-cloth/epoxy composites exposed to humid air were investigated. Tests were performed at temperature 40$^{\circ}C$ and 70$^{\circ}C$ with the materials exposed to humid air at 76% and 90% relative humidity. This investigation surveyed include (a) the moisture absorption and desorption characteristics of single and multi layered composites exposed to steady and to transient ambients, and (b) the resulting changes in tensile strength, dielectric strength, tan $\delta$ and $\varepsilon_{\tau}$ and the effects of environment on these parameters were assessed.

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