Polymer matrix composites filled with nanoporous metal powders:: Preparation and electrical properties

被引：16

作者：

Busmann, HG ^{[1
]}

Günther, B ^{[1
]}

Meyer, U ^{[1
]}

机构：

[1] Fraunhofer IFAM, D-28717 Bremen, Germany

来源：

NANOSTRUCTURED MATERIALS | 1999年 / 12卷 / 1-4期

关键词：

D O I：

10.1016/S0965-9773(99)00176-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The production of a new kind of silver powder for the preparation of electrically conducting polymers is described. This comprises the method of inert-gas-condensation with forced gas flow in a closed-loop system and a quasi continuous collection of the nanoporous metal deposits via filter separation. After sieving, powders of various morphologies are obtained. The electrical resistance of polymers filled with two kinds of such powders as a function of filler content is presented, showing percolation at filler contents below 5 vol%. In a two component epoxy resin system, the metal-like resistance observed for samples cured at room temperature changes into a semiconductor-like resistance upon thermal annealing. However, a thermal pretreatment of the powder retains the metal-like conductivity. (C) 1999 Acta Metallurgica Inc.

引用

页码：531 / 534

页数：4

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