文档介绍：· 1740 · 2009 年
第 37 卷第 10 期硅酸盐学报 Vol. 37,No. 10
2009 年 10 月 JOURNAL OF THE CHINESE CERAMIC SOCIETY October,2009

SiO2 纳米多孔绝热材料的制备与绝热性能研究

杨自春 1,陈德平 2
(1. 海军工程大学船舶与动力学院,武汉 430033;2. 北京科技大学土木与环境工程学院,北京 100083)

摘要:以纳米 SiO2 粉末为主要原料,添加红外遮光剂和无碱超细玻璃纤维,采用干压法成型成功制备了密度小、导热系数低的 SiO2 纳米多孔绝热
材料。为改善高温条件下的绝热性能,重点研究了红外遮光剂的选取及其影响。结果表明:以 SiC 作为红外遮光剂的 SiO2 纳米多孔绝热材料可有效
降低高温下的红外热辐射。

关键词:纳米多孔绝热材料;导热系数;红外遮光剂
中图分类号:TB321;TU55 文献标志码:A 文章编号:0454–5648(2009)10–1740–04

PREPARATION AND THERMAL PROPERTIES OF SILICA NANOPOROUS THERMAL
INSULATION MATERIALS

YANG Zichun1,CHEN Deping2
(1. College of Naval Architecture and Power, Naval University of Engineering, Wuhan 430033; 2. School of Civil and Environmental
Engineering, University of Science and Technology Beijing, Beijing 100083, China)

Abstract: Silica nanoporous thermal insulation materials with low density and low thermal conductivity were prepared from silica
nanopowders, infrared opacifier and ultra-fine alkali-free glass fiber through drying process method. To improve the thermal insula-
tion property at high temperature, the selection and affection of infrared opacifier were investigated. The results indicate that the in-
frared radiation of the silica nanoporous thermal insulation materials has been improved by doping with SiC.

Key words: nanoporous thermal insulation materials; thermal