Preparation method of polyvinylacetate material with high glass transition temperature

The invention discloses a preparation method of a polyvinylacetate material with high glass transition temperature. The preparation method comprises the following steps: taking vinyl acetate monomers and turpentine-based acrylate monomers according to the weight ratio of 100: 10-60, mixing, adding part of solvent, stirring and heating to 40-85 DEG C under an anoxic state, dripping an initiator and the remaining solvent, reacting for 4-9 hours, then removing the solvent and preparing the polyvinylacetate material. According to the method disclosed by the invention, the peculiar characteristics of high rigidity, high glass transition temperature and the like of the turpentine-based acrylate monomers are fully utilized, and a prepared product has colorless and transparent appearance, is tasteless and non-toxic and has good heat resistance and higher glass transition temperature, wherein Tg is more than 50 DEG C. The preparation method is suitable for industries of food packaging bags, thin films, stickers and the like, especially high temperature-resistant film materials, and has great application prospects.