Georgia Institute of Technology, United States
pp. 404 - 407
Keywords: fiber, silia aerogel, nanocomposite, SEM, mechanical properties
The present study is devoted to the investigation of mechanical properties of fiber-reinforced silica aerogels and composite phase change materials. We firstly reported our study on the preparation process of fiber-reinforced silica aerogels and PCM/silica nanocomposite, and then performed the bending and compression strength properties of the fiber-reinforced silica aerogels and the PCM/silica nanocomposite through two techniques: three-point bending and uni-axial compression. In addition, the effects of fiber content on mechanical properties were investigated. We found that the bending strength and compression strength of fiber-reinforced aerogels increased firstly when adding fiber volume fraction from 5.8% to 9.4%， and then decreased when adding fiber volume fraction from 9.4% to 11.5%.