Table 2. Transition Temperatures for NIPU Containing EDA, BDA, and HDA for DSC and DMA.
diamine | curing time (h) | Tg DSC (°C) | Tg DMA (°C) |
---|---|---|---|
EDA | 1.5 | 15.27 | 55.28 |
3 | 16.07 | 52.75 | |
6 | 14.04 | 52.22 | |
12 | 26.92 | 44.90 | |
24 | 24.79 | 47.08 | |
BDA | 1.5 | 12.74 | 52.77 |
3 | 12.97 | 48.95 | |
6 | 14.23 | 48.69 | |
12 | 13.42 | 45.93 | |
24 | 20.25 | 39.80 | |
HDA | 1.5 | 27.80 | 35.72 |
3 | 15.18 | 37.74 | |
6 | 21.58 | 35.18 | |
12 | 24.62 | 37.64 | |
24 | 25.90 |