Polymers and Polymer Composites

EMI SHIELDING EFFECTIVENESS OF COPPER/EPOXY COMPOSITES

July 1, 2005 By: Wetherhold R C; McManaman J M Research article

Title: EMI SHIELDING EFFECTIVENESS OF COPPER/EPOXY COMPOSITES
Page Range: p.657-68
Author(s): Wetherhold R C; McManaman J M
File size: 271K
Download the pdf (subscribers only)
Buy the pdf (non-subscribers)
Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 13
Issue No: No. 7

Abstract
The EMI shielding effectiveness of copper reinforced epoxy composites is testing using samples of different shaped, sized and treated specimens. A small amount of nickel powder was including in some specimens to evaluate the effect of magnetic permeability on the shielding effectiveness (SE). Results showed that a smaller fibre diameter resulted in significant SE improvements. SE was also substantially by relatively minor fibre shaping or by fine-scale roughening via chemical treatment. Improvements in SE were also achieved with essentially identical mechanical properties, leading to an effective multifunctional material. The addition of nickel powder led to in an overall improvement in SE as well as a cyclic dependence of SE frequency, which is reported to indicate phase interference at a scale of particle size not previously seen. 26 refs.


Related reading

More journal reading and science coverage connected to this topic.