Facile Preparation of a Novel HfC Aerogel with Low Thermal Conductivity and Excellent Mechanical Properties
Abstract
:1. Introduction
2. Results and Discussion
2.1. Thermal Conductivity and Compressive Strength Analysis
2.2. Synthetic Route and Reaction Mechanism Analysis
2.3. Chemical Composition and Structural Analysis
2.4. Thermogravimetric and Pore Morphology Analysis
3. Conclusions
4. Materials and Methods
4.1. Materials
4.2. Synthesis
4.3. Characterizations
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sample | Bulk Density (g/cm3) | Compressive Strength (MPa) | Thermal Conductivity (W/(m·K)) |
---|---|---|---|
C1 | 0.57 | 6.12 ± 0.13 SD | 0.053 ± 0.003 SD |
C2 | 0.50 | 5.22 ± 0.09 SD | 0.055 ± 0.005 SD |
C3 | 0.53 | 4.03 ± 0.19 SD | 0.056 ± 0.005 SD |
C4 | 0.49 | 3.45 ± 0.21 SD | 0.059 ± 0.012 SD |
C5 | 0.45 | 3.11 ± 0.07 SD | 0.060 ± 0.009 SD |
C6 | 0.37 | 2.45 ± 0.11 SD | 0.062 ± 0.023 SD |
Sample | Hf/R Molar Ratio | Gelation Time (min) |
---|---|---|
C1 | 0.25:1 | 176 |
C2 | 0.5:1 | 158 |
C3 | 0.75:1 | 115 |
C4 | 1:1 | 81 |
C5 | 1.5:1 | 65 |
C6 | 2:1 | 46 |
Sample | BET Surface Areas (m2/g) | Average Pore Diameters (nm) |
---|---|---|
C1 | 407.33 | 16.20 |
C2 | 420.66 | 19.23 |
C3 | 433.53 | 22.01 |
C4 | 514.29 | 10.95 |
C5 | 538.66 | 15.68 |
C6 | 601.02 | 23.34 |
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Wang, W.; Wu, Z.; Song, S.; You, Q.; Cui, S.; Shen, W.; Wang, G.; Zhang, X.; Zhu, X. Facile Preparation of a Novel HfC Aerogel with Low Thermal Conductivity and Excellent Mechanical Properties. Gels 2023, 9, 839. https://doi.org/10.3390/gels9100839
Wang W, Wu Z, Song S, You Q, Cui S, Shen W, Wang G, Zhang X, Zhu X. Facile Preparation of a Novel HfC Aerogel with Low Thermal Conductivity and Excellent Mechanical Properties. Gels. 2023; 9(10):839. https://doi.org/10.3390/gels9100839
Chicago/Turabian StyleWang, Wei, Zhanwu Wu, Shicong Song, Qi You, Sheng Cui, Weimin Shen, Guoqing Wang, Xuanfeng Zhang, and Xiaofei Zhu. 2023. "Facile Preparation of a Novel HfC Aerogel with Low Thermal Conductivity and Excellent Mechanical Properties" Gels 9, no. 10: 839. https://doi.org/10.3390/gels9100839