▎ 摘　　要

NOVELTY - A geogrid contains 1-2 pts. wt. anhydrous calcium chloride, 0.7-2 pts. wt. zinc ricinoleate, 2-3 pts. wt. alkyl ketene dimer, 1-2 pts. wt. polyvinyl alcohol, 1.7-2 pts. wt. dimethyldimethylammonium bromide, 1-2 pts. wt. thiol butyl tin, 5-7 pts. wt. oxidized graphene, 40-50 pts. wt. P-hydroxybenzoic acid, 10-17 pts. wt. acetic anhydride, 20-30 pts. wt. 6-hydroxy-2-naphthoic acid, 180-200 pts. wt. high-density polyethylene, 4-6 pts. wt. tolyldiphenylphosphate, 1-2 pts. wt. ammonium zirconium carbonate, 0.1-0.3 pt. wt. 1,2-dimethylimidazole and 0.3-1 pt. wt. dimethylethanolamine. USE - Elastic geogrid (claimed). ADVANTAGE - The elastic geogrid has excellent break resistance property and ensures prolonged service lifetime. DETAILED DESCRIPTION - The elastic geogrid comprises 1-2 pts. wt. anhydrous calcium chloride, 0.7-2 pts. wt. zinc ricinoleate, 2-3 pts. wt. alkyl ketene dimer, 1-2 pts. wt. polyvinyl alcohol, 1.7-2 pts. wt. dimethyldimethylammonium bromide, 1-2 pts. wt. thiol butyl tin, 5-7 pts. wt. oxidized graphene, 40-50 pts. wt. P-hydroxybenzoic acid, 10-17 pts. wt. acetic anhydride, 0.08-0.1 pt. wt. zinc acetate, 20-30 pts. wt. 6-hydroxy-2-naphthoic acid, 180-200 pts. wt. high-density polyethylene, 4-6 pts. wt. tolyldiphenylphosphate, 1-2 pts. wt. ammonium zirconium carbonate, 0.1-0.3 pt. wt. 1,2-dimethylimidazole and 0.3-1 pt. wt. dimethylethanolamine. An INDEPENDENT CLAIM is included for the manufacturing method of elastic geogrid, which involves adding 60-70 wt.% acetic anhydride, p-hydroxybenzoic acid and zinc ricinoleate in oil bath at 138-140 degrees C, heating, stirring for 10-15 minutes, adding 0.01-0.02 wt.% mixture and 96-98 wt.% sulfuric acid, heat preserving for 3-5 hours, discharging, pouring hot water to 1.6-2 times the weight of ice water, leaving still for 3-5 minutes, blow-drying in vacuum drying oven at 50-60 degrees C, drying for 20-24 hours, obtaining acetylated monomer (a), mixing 6-hydroxy-2-naphthoic acid and the remaining acetic anhydride, adding to oil bath at 120-130 degrees C, heat preserving for 3-4 hours, discharging, pouring hot water to 1.6-2 times the weight of ice water, Leaving still for 3-5 minutes, blow-drying into vacuum drying oven at 50-60 degrees C for 20-24 hours, obtaining acetylated monomer (b), adding 1,2-dimethylimidazole to 17-20 times the weight of anhydrous ethanol, stirring, adding butyl mercaptan, increasing the temperature to 50-60 degrees C, stirring for 4-9 minutes, adding graphene oxide, ultrasonically treating for 1-2 minutes, filtering, drying precipitate at room temperature, obtaining modified graphene, adding modified graphene to 100-120 times the weight of absolute ethanol, ultrasonically dispersing for 50-60 minutes, adding acetylated monomer (a) and acetylated monomer (b), ultrasonically treating for 30-40 minutes, adding polyvinyl alcohol and alkyl ketene dimer, stirring, carrying out vacuum distillation, drying product under vacuum at 60-70 degrees C for 20-25 hours, obtaining monomer pretreatment graphene, adding didecyl dimethyl ammonium bromide to 10-14 times the weight of deionized water, stirring, adding anhydrous calcium chloride, ammonium zirconium carbonate and monomer pretreatment graphene, increasing the temperature to 70-80 degrees C, heating, stirring to dry, obtaining modified graphene, mixing modified graphene and zinc acetate into the reactor under nitrogen protection, increasing the temperature to 240-250 degrees C, heat preserving for 3-4 hours, continuously increasing the temperature of 270-280 degrees C, heat preserving for 1-2 hours, continuously increasing the temperature to 290-300 degrees C, heat preserving for 30-40 minutes, cooling material, obtaining graphene copolyester composite material, mixing graphene copolyester composite material with remaining raw materials, stirring, placing into the extruder for melt extrusion, pressing melt into a sheet by three-roll press, punching and stretching.