Table 5.
SFE components for linear polyurethane and coatings; estimation by Owens–Wendt and van Oss–Good methods
| Polyurethane sample no. by Table 1 | van Oss–Good method by formamide–iiodomethane–water, [mJ/m2] | Owens–Wendt method by formamide–diiodomethane, [mJ/m2] | Owens–Wendt method by water–diiodomethane, [mJ/m2] | ||||||
|---|---|---|---|---|---|---|---|---|---|
| γ S |
|
|
γ S |
|
|
γ S |
|
|
|
| PU-3 | 23.91 | 22.80 | 1.11 | 26.21 | 25.62 | 0.59 | 26.38 | 23.78 | 2.60 |
| PU-7 | 41.00 | 40.70 | 0.30 | 40.91 | 37.64 | 3.27 | – | – | – |
| PU-8 | 43.46 | 43.15 | 0.31 | 43.17 | 40.72 | 2.45 | – | – | – |
| PU-10 | 44.30 | 43.56 | 0.74 | 43.55 | 41.56 | 1.99 | – | – | |
| PU-9 | 40.54 | 38.59 | 1.95 | 44.49 | 43.78 | 0.71 | 44.17 | 42.49 | 1.68 |