Radar wave absorbing characterization of bicomponent fibers

The sheath–core bicomponent fibers were melt-spun by co-extrusion of polypropylene and polypropylene/fillers master-batches. The melt-spun fibers were characterized by DSC, SEM and MSERA. Crystallinity of bicomponent fibers with wave absorption agent was more than that of PP alone. SEM results showed that inorganic particles in fibers had relatively good dispersibility. The electrical resistance of fibers containing bronze particles in the core part reached minimum at the 20 Wt% bronze content. Fibers with ferrite/bronze showed the good radar absorption effects and the absorption property was improved with the increase in bronze content. The fiber having the ferrite or ferrite/bronze in the core-part exhibited the lower reflectivity compared the fiber with ferrite or ferrite/bronze in the sheath-part.