Introduction
Theoretical background
Materials and methods
Materials
Nanocomposite preparation
Sample code | EPDM/NBR (phr) | MAH-g-EPDM (phr) | HNT (phr) | ZnO (phr) | St. acid (phr) | CBS (phr) | Sulfur (phr) |
---|---|---|---|---|---|---|---|
E70N30 | 100 | 2 | 0 | 5 | 2 | 1.5 | 2 |
E70N30H1 | 100 | 2 | 1 | 5 | 2 | 1.5 | 2 |
E70N30H3 | 100 | 2 | 3 | 5 | 2 | 1.5 | 2 |
E70N30H5 | 100 | 2 | 5 | 5 | 2 | 1.5 | 2 |
E70N30H7 | 100 | 2 | 7 | 5 | 2 | 1.5 | 2 |
E70N30H10 | 100 | 2 | 10 | 5 | 2 | 1.5 | 2 |
Characterization
Results and discussion
Cure characteristics
Sample code | t5(min) | t10(min) | t90(min) | t95(min) | \({M}_{H}\)(Nm) | \({M}_{L}\)(Nm) | \({M}_{H}-{M}_{L}\)(Nm) |
---|---|---|---|---|---|---|---|
E70N30 | 7.01 | 7.58 | 15.00 | 17.34 | 54.5 | 13.07 | 41.43 |
E70N30H1 | 6.70 | 7.24 | 14.25 | 16.90 | 72.9 | 15.65 | 55.94 |
E70N30H3 | 6.62 | 7.04 | 14.10 | 16.76 | 75.30 | 15.94 | 59.35 |
E70N30H5 | 6.35 | 6.85 | 13.90 | 16.61 | 78.00 | 16.50 | 61.50 |
E70N30H7 | 5.90 | 6.24 | 13.50 | 16.41 | 79.80 | 17.73 | 62.07 |
E70N30H10 | 5.68 | 6.03 | 13.10 | 15.76 | 82.00 | 18.55 | 63.54 |
Morphological observations
Mechanical properties
Stiffness analysis
DMTA analysis
Swelling behavior
Thermal properties
Sample code | Temperature at 5% loss (°C) | Maximum weight loss (%) | Temperature at maximum weight loss rate (°C) |
---|---|---|---|
E70N30 | 368.4 | 90.43 | 477.3 |
E70N30H1 | 369.9 | 87.81 | 479.3 |
E70N30H3 | 371.1 | 87.42 | 480.7 |
E70N30H5 | 371.2 | 86.65 | 481.3 |
E70N30H7 | 372.1 | 85.73 | 482.4 |
E70N30H10 | 379.3 | 83.54 | 483.1 |