| abstract |
The invention provides a PM2.5 filtering membrane, a preparation method and a PM2.5 filtering screen window. The PM2.5 filtering membrane is formed by polymer fibers, the transmittance of the PM2.5 filtering membrane is 10-90%, wherein the polymer fibers are formed by at least one of polyacrylonitrile, polyvinylpyrrolidone, polyimide, polymethyl methacrylate, nylon, polyvinyl alcohol, polypropylene, polyethylene, polycarbonate, polyacrylic acid, polystyrene, polyvinyl chloride, polyacrylic acid, polyvinyl butyral and polyethylene glycol terephthalate, and the diameter of the polymer fibers is 50 nm-20 mu m. The PM2.5 filter membrane has at least one of the advantages of controllable transparency, excellent PM2.5 filtering effect, large-size mass production and the like. |