Dielectric properties of polypropylene fabrics with carbon plasma coatings for applications in the technique of electromagnetic field shielding

摘要

Within the current work an attempt was made to use glow discharge low temperature plasma processing to produce carbon coatings on polypropylene unwoven fabric for electromagnetic field shielding applications. Layers were obtained from the gaseous phase (propane–butane). The influence of coatings on the dielectric buffer properties of modified fabrics was investigated. The Havriliak–Negami (HN) function precisely fits our relaxation data, hence the HN parameters could be used to control and optimize the processing of plasma coatings.