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Abstract

Studies were carried out on RT-cured glass/epoxy composite specimens, subjected to different post-cure schedules (50, 60, 70, and 85°C and durations) and immersed until saturation in distilled water at 50°C. The effects of different post-cure schedules, on the moisture diffusion characteristics of the composite were studied. Results showed that the saturation moisture levels decreased with increased post curing, a trend attributed to increased matrix cross-linking, as evidenced by the increase in T_g (glass transition temperature) values with extent of post cure. The diffusion parameter-like composite diffusion coefficient (D_c) and time of saturation (t_m) showed either insignificant or marginal changes, within the range of post-cure schedule considered in these studies.

Keywords

glass/epoxy composites post curing temperature duration diffusion diffusion coefficient.

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References

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Shihari, S. , Revathi, A. and Rao , R.M.V. G. K. (2002). Hygrothermal Effects on RT-cured Glass/Epoxy Composites in Immersion Environments , J. Reinforced Plastics and Composites, 21(11): 983-991.

Post-curing Effects on Hygrothermal Behavior of RT-cured Glass/Epoxy Composites

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