Magnetic and Electromagnetic Evaluation of the Iron Nanoparticle filled Polyurethane Nanocomposites

摘要

The magnetic and electromagnetic wave absorption behavior of a flexible ironnanoparticle reinforced polyurethane nanocomposite is reported. Surface-initiated polymerization (SIP) method was utilized to fabricate high quality nanocomposites with uniform particle distribution and tunable particle loading (up to 65 wt.%). The enhancement of coercive force is observed when the nanoparticles are embedded into the polymer matrix Electromagnetic wave absorption performance at a discrete frequency as studied by metal-backed reflection loss indicates that the SIP nanocomposites can save the weight up to 50% compared to the composite counterpart with micron-size particles.