Heat-Treated Aramid Pulp/Silica Aerogel Composites with Improved Thermal Stability and Thermal Insulation
Abstract
:1. Introduction
2. Results and Discussion
2.1. Shrinkage, Density and Porosity
2.2. Microstructure
2.3. Pore Structure
2.4. FTIR and Hydrophobicity
2.5. Thermal Stability
2.6. Thermal Insulation
3. Conclusions
4. Materials and Methods
4.1. Materials
4.2. Preparation of Heat-Treated AP/Aerogels
4.3. Methods of Characterization
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Heat Treatment | BET Surface Area (m2/g) | Pore Volume a (cm3/g) | Average Pore Diameter b (nm) | Vpore c (cm3/g) | Dpore d (nm) |
---|---|---|---|---|---|
Untreated | 764.8 ± 15.5 | 2.23 | 8.11 | 5.39 | 28.19 |
600 | 748.7 ± 17.6 | 2.73 | 18.47 | 4.68 | 25.00 |
700 | 685.5 ± 12.5 | 1.74 | 15.93 | 4.62 | 26.96 |
Sample | Heat Treatment | Aramid Pulp Component | Silica Aerogel Component | ||
---|---|---|---|---|---|
Tonset (°C) | Tpeak (°C) | Tonset (°C) | Tpeak (°C) | ||
Pure TSA [37] | Untreated | - | - | 248 | 275 |
700 °C | - | - | 523 | 584 | |
AP/aerogel | Untreated | 432.9 | 497.3 | 298.8 | 309.7 |
600 °C | 414.7 | 501.4 | 573.2 | 613.4 | |
700 °C | 415.4 | 493.4 | 553.1 | 628.4 |
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Li, Z.; Shen, K.; Hu, M.; Shulga, Y.M.; Chen, Z.; Liu, Q.; Li, M.; Wu, X. Heat-Treated Aramid Pulp/Silica Aerogel Composites with Improved Thermal Stability and Thermal Insulation. Gels 2023, 9, 749. https://doi.org/10.3390/gels9090749
Li Z, Shen K, Hu M, Shulga YM, Chen Z, Liu Q, Li M, Wu X. Heat-Treated Aramid Pulp/Silica Aerogel Composites with Improved Thermal Stability and Thermal Insulation. Gels. 2023; 9(9):749. https://doi.org/10.3390/gels9090749
Chicago/Turabian StyleLi, Zhi, Kai Shen, Min Hu, Yury M. Shulga, Zhenkui Chen, Qiong Liu, Ming Li, and Xiaoxu Wu. 2023. "Heat-Treated Aramid Pulp/Silica Aerogel Composites with Improved Thermal Stability and Thermal Insulation" Gels 9, no. 9: 749. https://doi.org/10.3390/gels9090749