Polypropylene insulating material for bipolar coagulation forceps and method for producing same

Abstract

The application relates to a polypropylene insulating material for a bipolar electrocoagulation forceps and a preparation method thereof, and belongs to the technical field of high polymer materials. Modified ceramic powder is melt-blended with polypropylene containing phenolic hydroxyl groups and polypropylene particles. The rutile phase solid solution formed by europium ions and niobium ions doped titanium dioxide in the modified ceramic powder provides deep traps, can capture free carriers in the material, and nano zinc oxide provides shallow traps, assists the ordered migration of carriers, and the two form a double-trap synergistic effect. When the material is in a high-frequency high-voltage electric field, the free carriers with higher energy are preferentially captured by the deep traps of the titanium dioxide doped with europium ions and niobium ions, the strong binding force of the deep traps can fix these carriers at the lattice defects, prevent the formation of conductive paths, and part of the low-energy carriers will be captured by the shallow traps, avoiding the aggregation of the low-energy carriers to the deep trap area, and reducing the accumulation of space charges.