Table 2 Chemical functionalization process parameters using 3-GPTMS e 3-APTES on steel API 5L X42 substrate
Organosilanes | 3-GPTMS | 3-APTES |
|---|---|---|
Chemical Formula | [OCH2CHCH2O(CH2)3]Si(OCH3)3 | [NH2(CH2)3]Si(OCH2CH3)3 |
Chemical structure |
|
|
Organofunctional group |
|
|
Organosilane Solution | 2/(80/20) v/(v/v) 3-GPTMS/(deionized water/methanol solution) | 2/(90/10) v/(v/v) 3-APTES/(deionized water/ethanol solution) |
Hydrolysis Time (h) | 48 | 0.5 |
pH | 5–5.5 (acetic acid) | pH natural |
Molar ratio water/alkoxide | 480.5 | 452.5 |
Immersion time (s) | 20 | 30 |
Cure temperature (°C) | 150 ± 5 | 70 ± 5 |
Cure Time (h) | 1 | 1.5 |
