Table 5.

Microscopic images of the unmodified epoxy compound seasoned in exploitation environments (10× magnification).

Seasoning Time
1 week	1 month	3 months
Environment–tap water
WW/1w	WW/1m	WW/3m
Environment–aqueous solution of acetic acid 3%
RKO3%/1w	RKO3%/1m	RKO3%/3m
Environment–aqueous solution of acetic acid 6%
RKO6%/1w	RKO6%/1m	RKO6%/3m
Environment–aqueous solution of acetic acid 9%
RKO9%/1w	RKO9%/1m	RKO9%/3m