第4期
Effect of Pore Size on Properties of Highly Porous Silica Ceramic Foams for Heat Insulation
作者:DU Zhongpei1, 2, YAO Dongxu1, XIA Yongfeng1*, ZUO Kaihui1, YIN Jinwei1, LIANG Hanqin1, ZENG Yuping1*
作者机构:1 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China 2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
分类号:
卷号:
期号 : 2020 年, 第4期
页码:6 - 9
内容简介

Highly porous silica ceramics with different pore sizes were fabricated by adjusting the mixed surfactants addition. The effect of the pore size on the cold compressive strength and the thermal conductivity of the ceramics was researched. The results show that the smaller pore size can improve the compressive strength and the thermal conductivity. With the mixed surfactants addition increasing from 0.1 mass % to 0.4 mass %, the porosity is close, in the range of 88.10%-88.31%, and the average pore size decreases from 190 μm to 97 μm; the compressive strength is enhanced from 2.97 MPa to 3.55 MPa; and the thermal conductivity decreases from 0.104 W · m-1 · K-1 to 0.089 W · m-1 · K-1.

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