Durability of GFRP nanocomposites subjected to hygrothermal ageing

This paper presents long term durability prediction of 0-5 wt.% nanoclay/vinylester/glass fibre nanocomposites based on their tensile strength retention in accelerated hygrothermal ageing using Arrhenius rate model. The specimens were exposed to 30 degrees C, 50 degrees C and 60 degrees C and 95% relative humidity for 75 days and tested for tensile strength retention as a function of duration of exposure. The predicted tensile strength retentions for one year of ageing of vinylester/glass at 30 degrees C, 50 degrees C and 60 degrees C using Arrhenius rate model were 59%, 48% and 43% respectively. The corresponding strength retentions predicted for 4 wt.% nanoclay/vinylester/glass were 81.1%, 77.9% and 76.4%. Strength retentions for ten years were predicted using the analytical model to assess their long-term performance. (C) 2014 Elsevier Ltd. All rights reserved.