Research Article
Thermal Study of Anhydrides Cured Tetrafunctional Cardo Epoxy Resin
Table 2
DSC and TGA data of anhydrides cured and uncured EBCF.
| | Sample | DSC transition (°C) | (°C) | Decomposition range (°C) | (°C) | % wt loss | Residue at 700°C |
| | EBCF | 68.3 (Endo) | 120 | 120–210 | 187.9 | 10.2 | — | | 188 (Endo) | 340–400 | 369.9 | 11.3 | | 259.8 (Endo) | 455–515 | 505.1 | 28.9 | | 354.5 (Exo) | 515–550 | 548.2 | 20.6 |
| | EBCF-MA | 244.9 (Endo) | 230 | 230–370 | 338.6 | 16.8 | 36.9 (600) | | 415–510 | 433.6 | 30.5 |
| | EBCF-PMDA | 258.0 (Endo) | 170 | 170–250 | — | 11.7 | 33.5 | | 250–280 | 267.5 | 4.3 | | 280–390 | 329.3 | 20.6 | | 390–500 | 456.8 | 25 |
| | EBCF-PA | 168.5 (Endo)
266.6 (Endo) | 135 | 135–270 | — | 12.7 | 26.4 | | 270–380 | 322.1 | 20.6 | | 390–500 | 446.3 |
31 |
| | EBCF-THPA | 133.9 (Endo)
289.8 (Endo) | 255 | 255–360 | 340 | 16.1 | 20.7 | | 360–520 | 421.3 | 57.2 |
| | EBCF-TBPA | 232.5 (Endo)
313.4 (Exo) | 170 | 170–255 | 256 | 8.1 | 29.5 | | 260–315 | 285.5 | 14.3 | | 375–485 | 407.1 | 20.9 |
| | EBCF-TCPA | 212.8 (Endo) | 150 | 150–270 | 219.5 | 12.9 | 52.6 | | 253.2 (Exo) | 270–350 | 288.6 | 11.5 |
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