Influence of filler size and morphology in controlling the thermal emissivity of aluminium/polymer composites for space applications

被引：28

作者：

Babrekar, Harshada A. ^{[1
]}

Kulkarni, Naveen V. ^{[1
]}

Jog, Jyoti P. ^{[2
]}

Mathe, Vikas L. ^{[1
]}

Bhoraskar, Sudha V. ^{[1
]}

机构：

[1] Univ Pune, Dept Phys, Pune 411007, Maharashtra, India

[2] Natl Chem Lab, Pune 411008, Maharashtra, India

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2010年 / 168卷 / 1-3期

关键词：

Thermal emissivity; Dielectric constant; Camouflaging; Composite; Infra-red; INFRARED EMISSIVITY; NANOCOMPOSITE; FILMS;

D O I：

10.1016/j.mseb.2009.11.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：40 / 44

页数：5

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