|
|
Synthesis of monolithic carbon aerogels with high mechanical strength via ambient pressure drying without solvent exchange
|
Zhi Yang, Jian Li, Xiaojing Xu, Shengyang Pang, Chenglong Hu, Penglei Guo, Sufang Tang, Hui-Ming Cheng
|
|
|
Table 1 Synthesis parameters and properties of OAs and CAs.
|
|
Samples | R/C | W/R | Tgel (°C) | DS (%) | ρOA (g/cm3) | CS (%) | ρCA (g/cm3) | σCA (MPa) | ECA (MPa) | A1 | 300 | 17 | 30 | 29.21 | 0.92 | 23.14 | 1.13 | 126.8 | 1981.3 | A2 | 500 | 17 | 30 | 22.93 | 0.71 | 19.87 | 0.80 | 84.3 | 1170.8 | A3 | 1000 | 17 | 30 | 15.94 | 0.49 | 18.92 | 0.54 | 27.1 | 451.7 | A4 | 1500 | 17 | 30 | 6.54 | 0.38 | 17.75 | 0.37 | 10.8 | 156.5 | A5 | 2000 | 17 | 30 | 3.48 | 0.31 | 17.39 | 0.30 | 6.5 | 135.4 | B1 | 300 | 24 | 30 | 35.73 | 0.96 | 23.63 | 1.12 | 147.4 | 2076.1 | B2 | 500 | 24 | 30 | 30.15 | 0.73 | 20.55 | 0.82 | 124.4 | 1574.7 | B3 | 1000 | 24 | 30 | 22.16 | 0.49 | 18.04 | 0.51 | 39.6 | 545.7 | B4 | 1500 | 24 | 30 | 13.70 | 0.37 | 17.64 | 0.36 | 8.9 | 120.3 | B5 | 2000 | 24 | 30 | - | - | - | - | - | - | C1/A5 | 2000 | 17 | 30 | 3.48 | 0.31 | 17.39 | 0.30 | 6.5 | 135.4 | C2 | 2000 | 17 | 45 | 8.92 | 0.42 | 19.08 | 0.40 | 11.5 | 169.4 | C3 | 2000 | 17 | 60 | 10.63 | 0.43 | 18.94 | 0.42 | 21.4 | 270.6 | C4 | 2000 | 17 | 75 | 11.86 | 0.44 | 18.17 | 0.46 | 29.1 | 323.8 | C5 | 2000 | 17 | 90 | 14.92 | 0.46 | 17.64 | 0.47 | 38.2 | 502.6 | C3* | 2000 | 17 | 60 | 10.35 | 0.41 | 18.35 | 0.42 | 22.3 | 258.7 | C5* | 2000 | 17 | 90 | 14.18 | 0.47 | 16.63 | 0.45 | 35.4 | 481.9 |
|
|
|