Colloidal graphite as an admixture in cement and as a coating on cement for electromagnetic interference shielding

被引：121

作者：

Cao, JY ^{[1
]}

Chung, DDL ^{[1
]}

机构：

[1] SUNY Buffalo, Composite Mat Res Lab, Buffalo, NY 14260 USA

来源：

CEMENT AND CONCRETE RESEARCH | 2003年 / 33卷 / 11期

关键词：

electrical properties; admixture; cement paste;

D O I：

10.1016/S0008-8846(03)00152-2

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A water-based colloid of submicron graphite particles is an effective admixture for enhancing the EMI shielding effectiveness of cement paste, though it is ineffective for lowering the electrical resistivity. As an admixture, it is more effective for shielding than 15-mum-diameter discontinuous carbon fibers, though it is less effective than 0.1-mum-diameter discontinuous carbon filaments. A shielding effectiveness of 22 dB at 1 GHz is reached by cement paste at a solid graphite content of 0.92 vol.%, compared to a value of 11 dB for a coating made from the graphite colloid and a value of 14 dB for graphite-colloid-coated cement paste (without admixture). (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1737 / 1740

页数：4

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