Improved Self-Supporting and Ceramifiable Properties of Ceramifiable EPDM Composites by Adding Aramid Fiber
Abstract
:1. Introduction
2. Experimental
2.1. Materials
2.2. Sample Preparation
2.3. Characterization
3. Results and Discussion
3.1. Curing Properties of Ceramifiable EPDM Composites
3.2. Surface Morphology of Ceramifiable EPDM Composites
3.3. Swelling Property of Ceramifiable EPDM Composites
3.4. Mechanical Properties of Ceramifiable EPDM Composites
3.5. Anti-Dripping and Self-Supporting Properties of Ceramifiable EPDM Composites
3.6. Linear Ablation Property of Ceramifiable EPDM Composites
3.7. Flexural Strength and Linear Shrinkage of Ceramifiable EPDM Composites
3.8. Thermogravimetric Analysis
3.9. SEM Analysis
3.10. Mechanism for the Transformation to Ceramic at High Temperature
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Sample | EPDM | SGF | APP | AF | DCP | S |
---|---|---|---|---|---|---|
EPDM/AF0 | 70 | 85 | 45 | 0 | 2.10 | 0.35 |
EPDM/AF5 | 70 | 85 | 45 | 3.5 | 2.10 | 0.35 |
EPDM/AF10 | 70 | 85 | 45 | 7 | 2.10 | 0.35 |
EPDM/AF15 | 70 | 85 | 45 | 10.5 | 2.10 | 0.35 |
Sample | t10 (s) | t90 (s) | ML/(N·m) | MH/(N·m) | ΔM/(N·m) |
---|---|---|---|---|---|
EPDM-160 °C | 127 | 689 | 0.28 | 0.57 | 0.29 |
EPDM-170 °C | 102 | 651 | 0.12 | 0.59 | 0.47 |
EPDM-180 °C | 70 | 388 | 0.11 | 0.65 | 0.53 |
Sample | t10 (s) | t90 (s) | ML/(N·m) | MH/(N·m) | ΔM/(N·m) |
---|---|---|---|---|---|
EPDM/AF0 | 84 | 559 | 0.39 | 1.72 | 1.33 |
EPDM/AF5 | 86 | 586 | 0.56 | 2.07 | 1.51 |
EPDM/AF10 | 86 | 650 | 0.62 | 2.23 | 1.61 |
EPDM/AF15 | 87 | 638 | 0.62 | 2.48 | 1.86 |
Sample | Dimensional Change (Length × Width) (mm) | Liquid Absorbency (%) | |
---|---|---|---|
EPDM/AF0 | Before swelling | 20.08 × 20.06 | 252.23 |
After swelling | 29.34 × 29.34 | ||
EPDM/AF5 | Before swelling | 20.08 × 20.18 | 184.25 |
After swelling | 21.24 × 24.50 | ||
EPDM/AF10 | Before swelling | 20.04 × 20.14 | 150.72 |
After swelling | 21.10 × 23.20 | ||
EPDM/AF15 | Before swelling | 20.02 × 20.04 | 132.66 |
After swelling | 20.90 × 20.90 |
Sample | Tearing Strength (N/m) |
---|---|
EPDM/AF0 | 11.53 ± 0.62 |
EPDM/AF5 | 14.85 ± 0.70 |
EPDM/AF10 | 16.61 ± 0.95 |
EPDM/AF15 | 22.02 ± 0.65 |
Sample | Dripping or Not | UL94 Rating |
---|---|---|
EPDM/AF0 | Dripping | NC |
EPDM/AF5 | Dripping | NC |
EPDM/AF10 | No dripping | NC |
EPDM/AF15 | No dripping | NC |
Sample | Bending Angle at 600 °C (°) | Bending Angle at 700 °C (°) | Bending Angle at 800 °C (°) | Bending Angle at 900 °C (°) |
---|---|---|---|---|
EPDM/AF0 | 16.32 | 67.42 | 90 | 90 |
EPDM/AF5 | 10.63 | 12.46 | 21.65 | 39.91 |
EPDM/AF10 | 0 | 0 | 5.37 | 9.6 |
EPDM/AF15 | 0 | 0 | 0 | 6.38 |
Sample | Linear Ablation Rate (mm/s) |
---|---|
EPDM/AF0 | - a |
EPDM/AF5 | 0.28 |
EPDM/AF10 | 0.25 |
EPDM/AF15 | 0.23 |
Sample | T5% (°C) | Tmax1 (°C) | Residue at 500 °C (wt %) |
---|---|---|---|
AF | 481.23 | - | 94.49 |
EPDM/AF0 | 360.73 | 381.57 | 56.74 |
EPDM/AF10 | 378.39 | 394.16 | 57.62 |
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Zhao, D.; Liu, W.; Shen, Y.; Jiang, G.; Wang, T. Improved Self-Supporting and Ceramifiable Properties of Ceramifiable EPDM Composites by Adding Aramid Fiber. Polymers 2020, 12, 1523. https://doi.org/10.3390/polym12071523
Zhao D, Liu W, Shen Y, Jiang G, Wang T. Improved Self-Supporting and Ceramifiable Properties of Ceramifiable EPDM Composites by Adding Aramid Fiber. Polymers. 2020; 12(7):1523. https://doi.org/10.3390/polym12071523
Chicago/Turabian StyleZhao, Dong, Wei Liu, Yucai Shen, Guodong Jiang, and Tingwei Wang. 2020. "Improved Self-Supporting and Ceramifiable Properties of Ceramifiable EPDM Composites by Adding Aramid Fiber" Polymers 12, no. 7: 1523. https://doi.org/10.3390/polym12071523