Thermal conductivity of polyimide foams

被引：52

作者：

Caps, R ^{[1
]}

Heinemann, U ^{[1
]}

Fricke, J ^{[1
]}

Keller, K ^{[1
]}

机构：

[1] ESA ESTEC,NL-2200 AG NOORDWIJK,NETHERLANDS

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1997年 / 40卷 / 02期

关键词：

D O I：

10.1016/0017-9310(96)00134-2

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Measurements of the thermal conductivity of polyimide foams have been performed in the temperature range 173-323K for different gas pressures and different gas types (CO2 and Ar). The extinction of thermal radiation has been determined by hemispherical transmission and reflection measurements in the infrared. With these data, a quantitative model has been established which predicts the thermal conductivity of polyimide foams as a function of density, gas pressure and temperature. In addition the influence of low emissivity Foils integrated into low density polyimide foams on the thermal conductivity has been calculated using a three-flux model of combined radiation and solid/gas conduction. Copyright (C) 1996 Elsevier Science Ltd.

引用

页码：269 / 280

页数：12

共 13 条

[1] IMPROVED THERMAL-RADIATION EXTINCTION IN METAL-COATED POLYPROPYLENE MICROFIBERS [J].