Characterization of Composite Heat Insulations including Silica-aerogel Core Layer

抄録

Silica aerogel has an extremely low thermal conductivity, and it may make a superior heat insulation. This study aims to make stable composite heat insulations by combining fine silica-aerogel particles with silica-fibers as reinforcement. Two basic composite structures are examined; one with silica-fiber dispersed composite and the other with silica-paper stacked composite. The former structure provides better heat insulation properties throughout a broad temperature range, whereas the latter structure has relatively high thermal conductivities at higher temperature. Nevertheless, the silica-paper stacked composite may provide a good adhesion with other components such as concrete cement slurry to obtain building materials with excellent heat insulation properties.