具有气凝胶结构特征的C/SiO2和C/SiC复合材料研究进展

何飞, 李亚, 骆金, 方旻翰, 赫晓东

Development of SiO2/C and SiC/C Composites Featuring Aerogel Structures

Fei HE, Ya LI, Jin LUO, Min-Han FANG, Xiao-Dong HE

表1 不同硅氧烷先驱体制备的SiCO结构参数比较

Table 1 Porous parameters of SiCO prepared by different siloxane precursors

Precursors Temperature/ ℃ Density/ (g•cm-3) Ratio of porosity/ % specific surface area/(m2•g-1) Pore volume/ (cm3•g-1) Average pore size/nm PhTMS+TMOS (molar ratio=1:4)[42] as-prepared 1000 0.48 0.58 - 987 581 - 2.8 2.5 TEOS+PDMS[51] 1200 0.30 - 198.04 0.684 5.6 MDMS+TEOS (molar ratio=1:1)[46] as-prepared 800 - - 425.5 275.0 1.87 - 17.59 - BTEE[52] as-prepared 1000 - - 1022 69 0.53 0.02 - BTME[52] as-prepared 1000 - - 867 735 0.74 0.36 - TEOS+TBOT+PDMS[53] as-prepared 400 600 800 1000 - - 1.1 300.1 515.2 283.1 1.4 1.7 2.8 2.7 1.7 1.1 - BTEBP[13] 300 1300 1400 1500 0.264 0.260 0.265 0.266 83 91 91 91 1190 1050 818 796 0.916 0.802 0.703 0.639 - MTMS+GPYMS[54] as-prepared 1000 as-prepared 1000 0.31 0.61 0.18 0.49 78 - 87 - 464 207 618 150 1.24 0.98 1.07 0.52 11 18 7 14 PHMS[55] as-prepared 1000 - - 227 180 1.37 1.09 52 24 MTES[56] as-prepared 1000 - - 727 168 1.47 0.80 8.0 18.5 PDMS+TrEOS[57] as-prepared 1100 - 59-69 1.6 405-583 109 - 3.2-5.0 <2 MDES+TrEOS[58] as-prepared 1000 - 88±2 50±1 0.45±0.02 0.31±0.02 -