期刊
CERAMICS INTERNATIONAL
卷 45, 期 3, 页码 3954-3960出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.11.069
关键词
Porous fibrous materials; Freeze casting; Mechanical property; Thermal conductivity
资金
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [11421091]
Porous fibrous materials (PFMs) with three-dimensional networks were prepared by mullite fibers as skeleton and silica sols as binder via pressure and freeze-casting method. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and mercury intrusion porosimetry (MIP) were used to investigate the microstructures, phase and porous characteristics. The density of PFMs can be controlled by adjusting the pressure and sintering during the synthetic process. With the increase of density, the mechanical and thermal conduction properties were increased due to densification of fibers. Based on their lightweight and low thermal conductivity, the PFMs can be used in the field of high temperature thermal insulation.
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