1results about How to "Efficient photocatalytic performance" patented technology

The utility model is applicable to the technical field of filter bags, and provides a film-coated polyimide needled felt filter bag which is of a layered structure and comprises a surface layer, the surface layer is made of polyimide fibers, the surface layer is bonded with a supporting layer through a bonding layer, the supporting layer is made of glass fibers, and the surface layer is bonded with the supporting layer through a bonding layer. A protective layer is arranged on the surface of the surface layer and adopts a nano titanium dioxide coating; the surface layer of the polyimide fiber is coated with a layer of nano titanium dioxide coating, efficient photocatalytic performance is achieved, titanium dioxide can generate strong oxidizing substances under irradiation of ultraviolet rays, various harmful gases including sulfur dioxide can be decomposed, and the photocatalytic performance of the polyimide fiber is improved. Meanwhile, the nano titanium dioxide particles can form a compact coating on the surface of the polyimide fiber, so that a corrosive medium is effectively prevented from permeating and contacting the polyimide fiber, and the corrosion of acid gas in the flue gas to the surface layer of the polyimide fiber is delayed.