TITLE:
Preparation and Characterization of Mullite-Silica Aerogel Composite Material
AUTHORS:
Zhaofeng Song, Haiquan Zhao
KEYWORDS:
Silica, Aerogel, Mullite, Composite Materials
JOURNAL NAME:
Open Journal of Organic Polymer Materials,
Vol.8 No.4,
October
29,
2018
ABSTRACT: Silica aerogel due to the high specific surface
area, nanometer level pores and low density of the micro structure, had
excellent heat-insulating properties. But the characteristics of silica aerogel
with low density and high voidage resulted in poor mechanical properties. In
order to improve the strength of materials and meet the actual needs, in this
paper the heat-insulating composite material was made from the silica aerogel
and mullite fiber. This kind of composite material mainly contented of mullite
fiber, formed macro block structure, that gas gel is coated and filled with
mullite fiber. Furthermore, the composite material had good strength and kept
excellent thermal stability at 600°C. In addition the density of
composite decreased with the increasing of the gas gel content.