Polypropylene as a matrix was blended with BaSO 4 developing agent, then extruded and granulated by double\|screw extruder, and finally X\|ray developing fiber was obtained.

• 以聚丙烯为基体,硫酸钡为显影剂,共混后经双螺杆挤出造粒、纺丝,制得X光显影纤维。