Category: Transient Plane Source
Author(s): Anmin Cao, Huijun Wu, Moran Wang, Shuai Yin, Yundan Liao, Yunfei Ding
Keywords: Aerogels, Analysis, Bulk Density, Compression Tests, Droplet Scanning Analysis, Droplet Scanning Analysis (DSA), DSA, Fast Fourier Transform, Fast Fourier Transform (FFT) Analysis, FFT, glass, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, Silica Aerogel Composites, Surface Hydrophobicity, Thermal Conductivity, Thermostability, Transient Plane Heat Source Method
Abstract: The authors present a method of fiber-reinforced aerogel composites by impregnation of four layers of aligned glass fibers into silica sol layer-by-layer. The effect of different fiber alignments, as well as the effect of fiber lamination on the mechanical strength of the silica aerogel composites was investigated. In addition to this, the thermal conductivity of each composite was determined. The objective of this work was to investigate whether it is possible to control the mechanical properties of the aerogel composites depending on the orientation of the layers in the composite. It was found that the addition of the glass fibers resulted in improved mechanical properties without significantly increasing the thermal conductivity.
Reference: Journal of Sol-Gel Science and Technology, 63, 3 (2012) 445-456