A new technique to improve gasket performance that uses elastomer or rubber material

摘要

Elastomer material loaded with conductive metal powder is frequently used as EMI (electromagnetic interference) gaskets, and open or closed cell polymer or rubber is used as the core material of wire-mesh gasket or conductive fabric. Reported and well documented, and many shielding effectiveness test personnel know that, especially on some applications requiring very high level of shielding, these gaskets frequently fail to meet performance requirements because of compression set [1]. New test results reveal ways to circumvent this kind of failure, and we suggest a new test procedure in choosing the polymer material to address the existing problem.