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