Table 3. Summary of the Coatings.
material | Mna (g/mol) | cross-linker | method | dry content (wt %) | solvent | Tgb (°C) | Tdc (°C) | CAd (deg) | Cobb120e (g/m2) |
---|---|---|---|---|---|---|---|---|---|
pVaL2k | 1920 | HMMM | thermal curing | 60 | n-butyl acetate | 35.1 | 287.8 | 86.1 | 13.7 |
pVaL4k | 3780 | HMMM | thermal curing | 50 | n-butyl acetate | 55.6 | 326.9 | 80.4 | 4.1 |
pVaL8k | 6780 | HMMM | thermal curing | 50 | xylenes | 44.8 | 308 | 84.0 | 8.1 |
pHHDC_DMM | 6400 | TMTP | UV-curing | 40 | n-butyl acetate | 62.0 | 269.8 | 72.1 | 2.7 |
pHHDC_DMI | 8400 | TMTP | UV-curing | 40 | n-butyl acetate | 57.7 | 274.1 | 82.6 | 1.1 |
pHHDC_DMM_FDCA | 6100 | TMTP | UV-curing | 40 | n-butyl acetate | 47.1 | 265.4 | 61.7 | 2.1 |
pHHDC_DMI_FDCA | 6200 | TMTP | UV-curing | 40 | n-butyl acetate | 61.5 | 267.2 | 91.8 | 1.5 |
Determined by DSC using the second heating to determine the glass transition temperatures.
Determined by TGA; Td was defined as the temperature corresponding to 5% weight loss.
Values correspond to the average of five measurements.
Water absorptiveness is given in g/m2; the Cobb tests were made with inspiration from the official ISO-535 standard but with a decreased test diameter of 3.3 cm.