Preparation method of PVC film and solvent-resistant PVC film

The invention relates to the technical field of PVC films, and discloses a preparation method of a PVC film. Comprising the following steps: preparing the following raw materials in parts by weight: 90-110 parts of PVC resin, 10-15 parts of PS resin, 2-6 parts of a stabilizer, 8-15 parts of a compatilizer, 5-8 parts of a plasticizer, 0.5-2 parts of a lubricant, 5-6 parts of a flame retardant, 3-5 parts of dioctyl adipate, 0.5-0.7 part of titanium nitride, 0.1-0.3 part of cadmium stearate, 0.1-5 parts of an auxiliary plasticizer, 0.2-0.8 part of zinc powder, 0.5-20 parts of titanium dioxide and 0.1-0.3 part of polycondensed naphthalene sulfonate; the preparation method comprises the following steps: putting the raw materials except the PS resin and the compatilizer into a high-speed mixer for stirring and mixing, then cooling to normal temperature to obtain a premix, and introducing the PS resin and the compatilizer, so that the material has better solvent resistance and light transmission performance, and can