PROPERTIES OF LOW-DENSITY BULK SILICA-GEL LYOSIL

被引：3

作者：

LEE, BI

机构：

[1] Department of Ceramic Engineering, Clemson University, Clemson

来源：

MATERIALS LETTERS | 1994年 / 19卷 / 5-6期

关键词：

D O I：

10.1016/0167-577X(94)90159-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bulk silica gels prepared by hydrolysis, gelation and curing of tetramethoxy silane were further characterized. The pore size distribution is narrow in the range of 13.1 nm and the BET surface area is 622 m2/g. Visible light transmittance for bulk lyosil of 0.5 cm thick plate is 80% with UV cut off at 300 nm of a lyosil having bulk density of 0.40 g/cm3. Thermal conductivity of a dried monolithic lyosil is 0.065 W/m K and remained unchanged after firing in air at 600-degrees-C. Electron micrographs show that lyosils have uniform distribution of several nanometer sized silica particles linked together.

引用

页码：217 / 219

页数：3

共 8 条

[1]

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[2]

HENCH LL, 1986, SCI CERAMIC CHEM PRO, P52

[3]

HUA DW, 1992, MATER RES SOC SYMP P, V271, P547, DOI 10.1557/PROC-271-547

[4] THERMAL TRANSPORT IN POLYSTYRENE AND POLYURETHANE FOAM INSULATIONS [J].