Design and Manufacturing of Fabric Reinforced Electromagnetic Shielding Composite Materials

OpenAlex İngilizce

There is an increasing need to develop new materials for shielding against electromagnetic pollution that result of the change in our life styles. In this study, a high performance textile based composite material that provides effective electromagnetic protection is presented to meet this demand. The base textile is a weft knitted fabric produced by using a hybrid yarn consists of polyamid and kevlar 49 yarn plied with a stainless steel wire on a winding machine. Various weft knitted structures were processed by a hot press to obtain 1.5-3.0 mm thin composite layer forms. The polyamid yarn is the matrix, the kevlar 49 yarn is the reinforcing and stainless steel wire is conductive material in the composite. The Electromagnetic shielding effectiveness (EMSE) measurement in 30-3000 MHz frequency band shown that a shielding performance of 20-50 dB can be achieved depending on the thickness and structure of the composites.