Silica Coatings Pigmented with Core-Shell Particles for High-Temperature Radiation Heat Shields

摘要：

　　Hollow glass micro-beads uniformly coated by a shell of titania with thickness of 50 to 300 nm,were fabricated by wet chemical methods.The pigments were dispersed in silica coatings,then the pigmented coatings were deposited on quartz substrates by sol-gel spin-coating method with a thickness of about 80 μm.SEM,TEM and FT-IR techniques were used to characterize the microstructure and properties of the coatings.FT-IR indicated average infrared transmittance of coatings containing the core-shell particles was significantly lower than that of coatings containing no functional particles or containing hollow glass micro-beads,when the volume fraction of core-shell particles was just 5%.In view of its low infrared transmittance,pigmented silica coatings may find applications in high-temperature heat-insulating materials for reducing radiation heat transfer.

关键词： Pigmented coatings Sol-gel preparation Thermal properties Core-shell spheres Radiation reflective coating

作者: Guanghai Wang Yue Zhang Yufeng Chen

作者单位: China Building Materials Academy,Beijing,100024,PR China School of Materials Science and Engineering,Beihang University,Beijing,100191,PR China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1074-1077

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）