Environmental Degradation and Durability of Epoxy-Clay Nanocomposites

Table 3

Flexure modulus values in GPa for neat epoxy and epoxy-clay nanocomposites, as a function of exposure duration, subjected to environmental exposure by either temperature-humidity or by combined UV radiation and condensation.

Exposure duration	Temperature-humidity		UV and condensation
	Neat epoxy	Epoxy-clay	Neat epoxy	Epoxy-clay
0	4.4 ± 0.3	4.6 ± 0.2	4.4 ± 0.3	4.6 ± 0.2
1320	4.9 ± 0.1	4.8 ± 0.3	4.2 ± 0.2	5.1 ± 0.4
2712	4.8 ± 0.3	4.9 ± 0.3	3.7 ± 0.4	4.5 ± 0.3
4098	5.1 ± 0.2	4.8 ± 0.2	3.9 ± 0.2	4.3 ± 0.2