The Research of Radar Absorbing Property of Bicomponent Fibers with Infrared Camouflage

摘要

The bicomponent fibers were prepared for the radar absorbing and infrared camouflage. The fibers were melt-spun by co-extrusion of polypropylene (PP) and PP/fillers master-batches using general conjugate spinning. Master-batches were made up of mixture of PP chips and inorganic particle. The radar absorbing property was evaluated by an arch method. The fibers filled with the barium ferrite, Mn–Zn ferrite and bronze fillers had good radar absorbing effect. The input of infrared camouflage fillers in the sheath-part showed a limited effect on the radar wave absorbing properties of the bicomponent fibers. For the characterization, differential scanning calorimetry (DSC) and mass specific electrical resistance apparatus (MSERA) were used for analysis of thermal and crystallization behavior and electric performance of the spun-fibers. Scanning electron microscopy (SEM) was carried out to observe particle distribution on the bicomponent fibers.