期刊
ADVANCED FIBER MATERIALS
卷 2, 期 6, 页码 338-347出版社
SPRINGERNATURE
DOI: 10.1007/s42765-020-00054-8
关键词
Nanofiber aerogel; Silica; Electrospinning; Self-reinforcement
资金
- National Natural Science Foundation of China [51703024]
- Shanghai Education Development Foundation
- Shanghai Municipal Education Commission [18CG37]
- Fundamental Research Funds for the Central Universities [2232018D3-18]
- Program of Shanghai Academic Research Leader [18XD1400100]
Silica aerogels have attracted significant interest in thermal insulation applications because of their low thermal conductivity and great thermal stability, however, their fragility has limited their application in every-day products. Herein, a self-reinforcing strategy to design silica nanofibrous aerogels (SNFAs) is proposed using electrospun SiO2 nanofibers as the matrix and a silica sol as a high-temperature nanoglue. Adopting this approach results in a strong and compatible interfacial interaction between the SiO2 fibers and the silica sol, which results in the SNFAs exhibiting high-temperature-resistant and tunable mechanical properties from elastic to rigid. Furthermore, additional properties such as low density, high thermal insulation performance, and fire-resistance are still retained. The self-reinforcing method described herein may be extended to numerous other new ceramic aerogels that require robust mechanical properties and high-temperature resistance.
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