Nitrocellulose membrane and preparation method thereof

The invention discloses a nitrocellulose membrane, which is prepared from a nitrocellulose membrane solution, and the nitrocellulose membrane solution comprises the following raw materials by weight: 20-21 parts of a solvent; 0.2 to 0.3 part of a cosolvent; 2-3 parts of a non-solvent; 5-6 parts of a forming agent; 0.02 to 0.08 part of hydrotalcite; and 3-4 parts of nitrocellulose particles. According to the nitrocellulose membrane prepared by the preparation method disclosed by the invention, the added hydrotalcite has a special layered structure, so that a functional high-molecular substance can enter interlayer gaps of the hydrotalcite, the functional high-molecular substance is expanded without changing the structure of the functional high-molecular substance, and the nitrocellulose membrane with the multi-pore-diameter supporting layer has the advantages that the effective pore diameter is perfected, and the hydrophilicity of the nitrocellulose membrane is effectively improved; meanwhile, the high binding