掺杂六钛酸钾晶须硅酸铝纤维复合隔热材料的研制  

A STUDY ON ALUMINA-SILICA FIBERBOARDS DOPED WITH K_2Ti_6O_(13) WHISKERS

作　　者：张娜[1] 张玉军[2] 

机构地区：[1]济南铁道职业技术学院,济南250061 [2]山东大学材料科学与工程学院,济南250061

出　　处：《中国陶瓷》2009年第5期44-47,共4页China Ceramics

基　　金：国家科技支撑计划项目资助;编号:2006BAE03B7-3

摘　　要：通过湿法工艺制备掺杂六钛酸钾晶须的高效隔热材料硅酸铝纤维板,用稳态法研究硅酸铝纤维板热导率与六钛酸钾晶须加入量以及体积密度的关系。结果表明,六钛酸钾晶须的加入明显地降低了硅酸铝纤维板的热导率,随着加入量的增加热导率是逐渐减小,当六钛酸钾晶须含量为60%时热导率最低,高于60%时随着加入量的增加热导率反而增大;在300-320g/cm3的体积密度范围内复合隔热材料有较低的热导率。Highly effective thermal insulations alumina-silica fiberboards doped with K2Ti6O13 whiskers by web hard,The relations of the thermal conductivity coefficient of alumina-silica fiberboards and the quality content of K2Ti6O13 whiskers and volume density of alumina-silica fiberboards.The results shows that the thermal conductivity coefficient of fiberboards is reduced by doped with K2Ti6O13 whiskers and appear the minimum value of thermal conductivity coefficient when the quality content of K2Ti6O13 whiskers reach 60 percent, the thermal conductivity coefficient reduces gradually with the rise of quality content of K2Ti6O13 whiskers under the 60 percent; the thermal conductivity coefficient increases gradually with the rise of the quality content of K2Ti6O13 whiskers up the 60 percent. Alumina-silica fiberboards get the minimum value of thermal conductivity coefficient with the volume density scope of 300-320g/cm^3.

关 键 词：低热导率隔热材料 硅酸铝纤维 六钛酸钾晶须 

分 类 号：TQ175.722[化学工程—硅酸盐工业]