Antibacterial polyvinyl chloride material, preparation method and application thereof

The invention relates to an antibacterial polyvinyl chloride material. The antibacterial polyvinyl chloride material comprises polyvinyl chloride resin, wherein the material comprises the following compounds in every 100 parts of polyvinyl chloride resin as basic resin by weight: (A) 2-10 parts of a combined antibacterial agent by weight, the combined antibacterial agent comprising at least one of an antibacterial agent A selected from titanium dioxide and silver-supported nano titanium dioxide and an antibacterial agent B selected from a polyquaternium antibacterial, wherein the weight ratio of the antibacterial agent A to the antibacterial agent B is 1: 3 to 4: 3; (B) a plasticizer; and (C) an optional stabilizer. The antibacterial polyvinyl chloride material comprises the specific combined antibacterial agent, so that the polyvinyl chloride material has strengthened antibacterial ability and has a good mechanical property. The invention also relates to preparation and application of the polyvinyl chloride material, and the material can serve as a medical polymer material, particularly a medical catheter material, particularly a tracheal catheter material.