1. Colloidal method: In the zirconia solution, silica sol is added to form a colloidal solution, which is shaped by spraying and drawing methods, and sintered into fibers after drying.
2. Extrusion method: The zirconia sol or zirconia particles and thickener are made into blanks, and the blanks are extruded from the model port and into filaments by hydraulic pressure or the propelling action of a screw cutter, and then sintered and solidified Fibrous. The fiber produced by this method is thicker and the strength of the fiber is also low.
3. Dipping method: first soak the viscose filament or the entire fabric in the zirconium hydroxide solution for a long time to swell the viscose fiber, and then obtain the zirconia fiber with a certain tensile strength after pyrolysis and calcining.
