Research Article
Effects of Different Montmorillonite Nanoclay Loading on Cure Behavior and Properties of Diglycidyl Ether of Bisphenol A Epoxy
Table 3
Summary of isothermal rheological curing studies.
| Sample | Cure temperature, °C | Gel time, s | Storage modulus at gel point, Pa | Viscosity at gel point, Pa·s | Activation energy , KJ/mol |
| 0 wt.% MMT | 60 | 3456 ± 160 | 43810 ± 120 | 9844 ± 246 | 69.59 ± 1.78 | 70 | 1801 ± 94 | 30380 ± 167 | 6882 ± 161 | 80 | 1001 ± 69 | 8884 ± 149 | 2977 ± 201 | 90 | 391 ± 38 | 4606 ± 192 | 1027 ± 88 |
| 1 wt.% MMT | 60 | 5821 ± 141 | 84650 ± 305 | 19010 ± 109 | 65.26 ± 2.40 | 70 | 2981 ± 39 | 24440 ± 293 | 5492 ± 207 | 80 | 1631 ± 48 | 8106 ± 150 | 1808 ± 86 | 90 | 801 ± 21 | 4665 ± 101 | 1031 ± 44 |
| 2 wt.% MMT | 60 | 5851 ± 127 | 98170 ± 119 | 22570 ± 366 | 65.93 ± 1.9 | 70 | 3131 ± 44 | 28260 ± 246 | 6109 ± 127 | 80 | 1491 ± 29 | 12010 ± 83 | 2138 ± 87 | 90 | 841 ± 33 | 4767 ± 77 | 1073 ± 44 |
| 3 wt.% MMT | 60 | 5491 ± 97 | 113300 ± 228 | 25510 ± 180 | 68.17 ± 1.97 | 70 | 2591 ± 131 | 36685 ± 311 | 7920 ± 179 | 80 | 1471 ± 49 | 12700 ± 108 | 2867 ± 112 | 90 | 691 ± 37 | 5588 ± 98 | 1296 ± 66 |
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