Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7897624 | Journal of Asian Ceramic Societies | 2017 | 5 Pages |
Abstract
The particle's surface property plays an important role on controlling the thermal insulation performance of fibrous silica compacts. In the present study, the effect of addition of hydrophobic silica on the thermal conductivity of the fibrous silica compacts is investigated. The measurement was conducted using laser flash method and differential scanning calorimeter (DSC) method. The thermal conductivity of fibrous silica compacts is only 0.042 W/m K. The addition of 5% hydrophobic silica further reduces the thermal conductivity of fibrous silica compacts to 0.033 W/m K. The thermal conductivity reaches a constant value with higher hydrophobic silica content. The flexural strength decreases with the increase of hydrophobic silica content. A compromise between the thermal insulation and strength is needed. The performance of fibrous silica compacts shows strong dependence on the surface structure of glass fibers.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Tseng-Wen Lian, Akira Kondo, Takahiro Kozawa, Megumi Akoshima, Haruka Abe, Takahiro Ohmura, Wei-Hsing Tuan, Makio Naito,