Title of article :
Influence of filler size and morphology in controlling the thermal emissivity of aluminium/polymer composites for space applications
Author/Authors :
H.A. Babrekar، نويسنده , , Harshada A. and Kulkarni، نويسنده , , Naveen V. and Jog، نويسنده , , Jyoti P. and Mathe، نويسنده , , Vikas L. and Bhoraskar، نويسنده , , Sudha V.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Abstract :
The paper has addressed the problem of controlling the thermal emissivities from metal/polymer composites prepared by solution method. Aluminium is used as a filler and polystyrene as a polymer–matrix. Aluminium particles, with micrometer and nanometer dimensions having different morphologies, were employed. The values of emissivities were reduced when the coarse grains and flakes of aluminium were used as fillers, whereas, no significant change was observed when nano-aluminium was used in the composite. Dielectric dispersion for the composites was measured and the results are analysed in view of Fresnel relation. The differences in the values of dielectric constants, between the experimentally measured and those which can be predicted theoretically, are thought to arise from the interfacial polarization.
Keywords :
Thermal emissivity , dielectric constant , Camouflaging , Infra-red , Composite
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Journal title :
MATERIALS SCIENCE & ENGINEERING: B