THE EFFECTS OF SUNLIGHT AND HUMIDITY ON CF-188 COMPOSITE RESIN

Authors
  1. Luoma, G.A.
  2. Rowland, R.D.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
Fibre-reinforced thermoset composites are gaining increased usage in military equipment. In particular, the CF-188 aircraft has approximately 40% of its skin composed of Hercules AS3501-6 carbon fibre-reinforced epoxy resin. This material is, therefore, likely to be exposed to environmental extremes. Previous studies indicated that reflectance Fourier Transform Infrared Spectroscopy could be used to determine the degree of resin degradation caused by the combined effects of heat, water and ultraviolet light. The present report discusses studies on the individual effects of water and light on the chemical structure of this resin system. The results indicate that ultraviolet light exposure causes a rapid and specific type of surface degradation, while the water exposure causes a slower and more random polymer degradation.
Report Number
DREP-TM-89-7 — Technical Memorandum
Date of publication
15 Apr 1989
Number of Pages
24
DSTKIM No
89-02747
CANDIS No
60651
Format(s):
Hardcopy;Originator's fiche received by DSIS

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