Industrial & Engineering Chemistry Research | 2019
Robustly Magnetic and Conductive Textile with High Electromagnetic Shielding Performance Prepared by Synchronous Thiol–Ene Click Chemistry
Abstract
Herein, a magnetic and conductive nickel ferrite/thiol-modified reduced graphene oxide/waterborne polyurethane (NiFe2O4/M-rGO/WPU) network was constructed on polyester (PET) fabric by a synchronous thiol-ene click reaction. WPU with two sides of ene-ends can react with thiol groups in M-rGO on one side, and react with thiol groups on MPTES modified PET (M-PET) on the other side, by which constructing the strong interaction between textile and EM shielding layer. The synergistic effect of magnetic NiFe2O4 and conductive M-rGO was contributed to the excellent EM shielding effectiveness of 53.0 dB in X band with only 0.3 mm thickness. Meanwhile, by adjusting the content of magnetic and conductive components, the contribution of absorption (90.9%) to total EM shielding effectiveness was achieved while the surface reflection decreases. Furthermore, good mechanical properties, thermostability, and long-term performance stability also allowed it to be applied in various EM shielding fields.