▎ 摘　　要

NOVELTY - The production method of high surface tension polyester film involves adding vacuum-dried graphene to polymerization flask under nitrogen atmosphere, carrying out vacuum treatment, replacing high-purity nitrogen, mixing graphene solution with titanium tetrachloride, heating, dripping solvent under reduced pressure, drying silica gel microspheres to remove moisture, heating, vacuum treating activated silica gel microspheres, introducing organic solvents and titanium tetrachloride medium, drying in the presence of oxygen, distilling off solvent under reduced pressure and drying. USE - Production of high surface tension polyester film (claimed). ADVANTAGE - The method enables production of high surface tension polyester film with increased stability and high crystallinity. DETAILED DESCRIPTION - The production method of high surface tension polyester film involves (1) adding vacuum-dried graphene to polymerization flask under nitrogen atmosphere, carrying out vacuum treatment at room temperature for 3-4 hours, replacing high-purity nitrogen at 45-55 degrees C, mixing graphene solution with 5% titanium tetrachloride, heating with stirring at 40-60 degrees C for 4-6 hours, dripping the solvent under reduced pressure, (2) drying silica gel microspheres to remove moisture, heating at 180-200 degrees C at rate of 10 degrees C/minute for 2-3 hours, increasing the temperature to 400 degrees C for 3 hours, controlling temperature at 600 degrees C for 2 hours, (3) vacuum treating the activated silica gel microspheres, introducing organic solvents and 3-5% titanium tetrachloride medium, drying at 40-60 degrees C in the presence of oxygen for 13-15 hours, after completion of the reaction, distilling off the solvent under reduced pressure and drying in vacuum, (4) pretreating silica gel microspheres under the nitrogen atmosphere, adding 3-5 wt.% aluminide, adding high-purity nitrogen, grinding, (5) mixing terephthalic acid, neopentyl glycol, 1,4-cyclohexanedicarboxylic acid and antimony acetate at mass ratio of 4:1:1:3, mixing the reaction mixture with polypropylene at volume ratio of 1:10, adding 6-8 wt.% polymerization catalyst, controlling temperature at 230-250 degrees C and carrying out esterification reaction at 0.2-0.3 MPa for 3-5 hours.