Environmental Engineering Reference
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Figure 2.15
AA 2024 panels at er 840 h of salt spray test: (a) TSA + HTS, 95°C,
30 min + bis-sulfur silane 5%; (b) TSA + HTS 95°C, 30 min + silane mixtures: bis-amino
silane:VTAS; (c) TSA + HTS, 95°C, 30 min + amino silane:bis-sulfur silane.
Figure 2.16
192 h SST: (a) AA 2024, TSA anodized + with bis-sulfur silane 5%, 5 min
and drying 5 min at 100
°
C and (b) AA 2024, TSA anodized + HTS.
more water from the i lm upon drying and the silanol groups can more
easily react to form a more crosslinked and denser i lm.
In the case of AA 2024 anodized samples treated 5 minutes with poly-
sulfur silane 5% at RT followed by 5 minutes, curing at 100
C was observed.
It was also noticed that up to 192 h in SST (Figure 2.16) no sign of corro-
sion appeared. h e results at 192 h are comparable with TSA + HTS.
°
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