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保温材料与建筑节能
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TiO2掺杂硅气凝胶纤维毡复合材料的制备

作者:孙登科,王艳芳

关键字:硅气凝胶纤维毡,热桥效应,导热系数

 
(陕西工业职业技术学院 材料工程学院,陕西 咸阳  712000)
 
    摘要:研究了硅气凝胶纤维毡复合材料的制备工艺。结果表明:气凝胶能很好地填充于纤维之间,避免纤维之间的接触,有效地防止了热桥效应,制得了常温导热系数为0.0219 W/(m·K),高温(500 ℃)导热系数为0.0397 W/(m·K),具有一定机械强度的TiO2掺杂硅气凝胶纤维毡,可满足实际用途。
    关键词:硅气凝胶纤维毡;热桥效应;导热系数
    中图分类号:TU55+1.33        文献标识码:A        文章编号:1001-702X(2017)05-0119-02
 
Preparation of TiO2 doped silicon aerogel fibrofelt composites
SUN Dengke,WANG Yanfang
(School of Materials Engineering,Shaanxi Institute of Industry Technology,Xianyang 712000,China)
    Abstract:Study on the preparation technology of silica aerogel fibrofelt composite materials. The results showed that: the aerogel is well packed in the fiber,which avoids the contact between the fibers and effectively prevent the thermal bridge effect. The thermal conductivity of the aerogel is 0.0219 W/(m·K),the high temperature(500 ℃) thermal conductivity is 0.0397 W/(m·K),with a certain mechanical strength of TiO2-doped silica aerogel fibrofelt,which can meet the practical use.
    Key words:silica aerogel fibrofelt,thermal bridge effect,thermal conductivity