There is an ever-increasing demand for lighter, stronger, easy-to-manufacture and cost-effective shielding solutions. Jack Prawica and Jereme Irwin DLS Electronic Systems, Inc., Wheeling, IL, USA As we move into the 21st century, there is a demand for stronger, lighter, less expensive, and environmentally friendly, RoHS-compliant* conductive materials. Many industry insiders … [Read more...]
Introduction to Composite Electromagnetic Noise Absorber Technology
Thin and flexible materials can provide simple and innovative solutions for hardware engineers Jung-Ju Suh, Ph.D. Electrical Markets Division, 3M Korea; Seoul, South Korea INTRODUCTION Electromagnetic interference issues can arise anywhere in electronic equipment with unpredictable and troublesome effects. These issues challenge hardware design engineers, and the … [Read more...]
Stability of Nickel-Graphite Conductive Filler in Silicone Elastomer for EMI Shielding Applications
How does aging affect the shielding effectiveness of a gasket? Brian W. Callen, Ph.D. and Claudia E. Johnston Sulzer Metco (Canada) Inc., Fort Saskatchewan, Alberta, Canada Nickel graphite conductive fillers have been replacing conventional silver-based fillers in EMI shielding gasket materials. Filled elastomer shielding gaskets include extrusions, molded shapes, die cut … [Read more...]
Conductive Painting of Plastics: Delivering Value and Flexibility
Portable electronics manufacturers must evaluate coating processes based on consistency, repeatability, economy, and the availability of applicators worldwide. Roy Bjorlin, William Chen, Neil Browes and Darren Evans Spraylat Corporation Pelham, NY, USA Conductive paint technology has grown steadily in preference when conductive coatings are required on injection-molded … [Read more...]
Aspects of Conductive Filler Loading on EMI Shielding and DC Volume Resistivity
Brian W. Callen, B. Sc., Ph.D. and Claudia E. Johnston Westaim Ambeon, Fort Saskatchewan, Alberta, Canada Dennis K. Morland, P. Eng., M.Sc. The Northern Alberta Institute of Technology, Edmonton, Alberta, Canada INTRODUCTION Conductive fillers for plastics have been used in EMI shielding applications for many years. Initially pure metallic powders such as nickel or copper … [Read more...]
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