| 摘要 |
<p>An EM (electromagnetic wave) shielding material and an EM shield contains a material composition comprising a magnetic powder made of at least one EM absorbing element or compound in a discrete particle form and a binding compound to bind the discrete particles in a layer or paste. The discrete particles are made of one or more metals such as Fe, Ni, Cr and Mn or dielectric compounds having magnetic properties. The binding compounds can be selected from silicone, rubber, acrylonitrile butadiene styreneresin (ABS), polycarbonate (PC), epoxy, silica and polyurethane. The shielding material may further comprise associated components which can be selected from zinc oxide, magnesium oxide, ethylene thiourea, carbon black, and stearic acid. The material can also be used as a packaging material for electronic components in an electronic product.</p> |
