▎ 摘　　要

NOVELTY - Method for improving the temperature resistance of a polyethylene (PE) bag polyethylene material, involves (a) surface irradiation treatment by irradiating the PE bag, and processing with proton irradiation treatment, (b) preparation of temperature-resistant wetting agent by (b1) active modification of nano zeolite powder, (b2) preparation of organic graphene solution, and (b4) preparation of temperature-resistant wetting agent by blending the nano zeolite powder, the organic graphene liquid and the soaking additive agent, (c) pore-forming treatment of the PE bag by putting the surface-irradiated PE bag in step (a) into the zinc chloride solution, and adding zinc chloride solution with ferric chloride, (d) treating the PE bag with a temperature-resistant wetting agent, and (e) heat homogenization treatment by sending the PE bag treated in step (d) to 75-85 degrees C for 20-30 minutes, increasing the temperature, reducing to room temperature, washing and drying. USE - Method for improving the temperature resistance of a polyethylene (PE) bag polyethylene material. ADVANTAGE - The method firstly treats the PE bag with 60CO- gamma rays, and then treats with proton irradiation, to stimulate the surface activity of the PE bag and promote the PE bag to be more easily modified in subsequent operations. The PE bag is modified by the zinc chloride solution combined with ferric chloride, to form a microporous structure on its surface, and destroy the internal structure. The method utilizes the temperature-resistant wetting agent which is easier to modify the inside of the PE bag. The raw materials provide synergistic effect. DETAILED DESCRIPTION - Method for improving the temperature resistance of a polyethylene (PE) bag polyethylene material, involves (a) surface irradiation treatment by irradiating the PE bag with 60CO- gamma rays, with the irradiation dose rate of 520-580 Gy/hour, and the irradiation time of 10-20 minutes, processing with proton irradiation treatment, and finishing irradiation, (b) preparation of temperature-resistant wetting agent by (b1) active modification of nano zeolite powder by sending the nano zeolite powder to the calcining furnace for calcination at 600-700 degrees C for 20-30 minutes, after calcining, sending it to the active treatment solution for stirring treatment with the rotation speed of the stirring treatment of 200-500 rpm and the stirring time of 10-20 minutes, after stirring, and then washing and drying, (b2) preparation of organic graphene solution by sending the graphene into sulfuric acid for acidification, washing it with water for 1-3 times, adding it to the silane coupling agent KH560, ultrasonically dispersing for 10-20 minutes, ultrasonically processing at 200-250 W, and ending the ultrasonication to obtain an organic graphene solution, (b3) preparation of soaking additive agent by adding the polyamic acid solution to the acetone solution, adding chitosan, firstly stirring at 100-200 rpm for 20-30 minutes, and adding phosphoric acid to adjust the pH to 4.5-5.5, and (b4) preparation of temperature-resistant wetting agent by sending the nano zeolite powder in step (b1), the organic graphene liquid in step (b2) and the soaking additive agent in step (b3) to the blender for blending, with blending speed of 1000-1500 rpm, and the blending time of 20-30 minutes to obtain the temperature-resistant wetting agent, (c) pore-forming treatment of the PE bag by putting the surface-irradiated PE bag in step (a) into the zinc chloride solution, adding 20% of the total amount of the zinc chloride solution with ferric chloride, and leaving it still for 20-30 minutes, (d) treating the PE bag with a temperature-resistant wetting agent by putting the PE bag processed in step (c) into the temperature-resistant wetting agent in step (b), and using the combined method of ultrasonic and direct current (DC) magnetic field for processing, and completing processing, and (e) heat homogenization treatment by sending the PE bag treated in step (d) to 75-85 degrees C for 20-30 minutes, increasing the temperature to 95-105 degrees C for 10-20 minutes, finally reducing to room temperature, washing and drying to obtain the product.