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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
(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
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)
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
Key words:silica aerogel fibrofelt,thermal bridge effect,thermal conductivity