No-Stress Aging of Aramid/Epoxy Composites

    Volume 5, Issue 3 (October 1983)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 3


    Hahn, HT
    Washington University, St. Louis, MO

    Moore, RL
    Lawrence Livermore National Laboratory, Livermore, CA

    Chiao, TT
    Lawrence Livermore National Laboratory, Livermore, CA

    Abstract

    Environmental degradation of composite materials is of serious concern for many long-term applications. This is particularly true in the case of aramid/epoxy composites because both the reinforcing fiber and the matrix are organic materials. Over the past decade, we have collected limited data on no-stress aging of these materials, which we summarize here. We aged the test specimens in three environments: (1) 20 to 23°C, 20 to 55% relative humidity (RH), no fluorescent lighting; (2) 20 to 28°C, 24 to 37% RH, with fluorescent lighting; and (3) outdoor weathering in San Ramon, CA. When the composite strands and vessels were stored in the dark (indoors), we found no noticeable strength degradation in ambient environment for up to ten years.


    Paper ID: CTR10804J

    DOI: 10.1520/CTR10804J

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    Author
    Title No-Stress Aging of Aramid/Epoxy Composites
    Symposium , 0000-00-00
    Committee D30