▎ 摘　　要

NOVELTY - Modified fiber geogrid comprises 1-2 pts. wt. potassium fluoroaluminate, 5-7 pts. wt. oxidized graphene, 40-50 pts. wt. p-hydroxybenzoic acid, 10-17 pts. wt. acetic anhydride, 0.08-0.1 pts. wt. zinc acetate, 20-30 pts. wt. 6-hydroxy-2-naphthoic acid, 180-200 pts. wt. high-density polyethylene, 2-3 pts. wt. hydrolyzed polymaleic anhydride, 2-4 pts. wt. microcrystalline wax, 3-5 pts. wt. bone charcoal, 0.3-1 pts. wt. alkylated diphenylamine, 2-3 pts. wt. cyanoethyl cellulose, 1-2 pts. wt. sodium carboxymethyl cellulose, 10-14 pts. wt. trinonylphenyl phosphite and 2-3 pts. wt. calcium phosphate. USE - Used as modified fiber geogrid. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of modified fiber geogrid comprising (i) taking sodium carboxymethyl cellulose, adding 6-8 times deionized water, stirring to obtain aqueous fiber solution, (ii) taking 60-70 wt% acetic anhydride, mixing with p-hydroxybenzoic acid, placing in oil bath at 138-140 degrees C, heating and stirring for 10-15 minutes, dropping 0.01-0.02 of mixed material 96-98% sulfuric acid, carrying out insulation reaction for 3-5 hours, placing the material into its weight 1.6-2 times the ice water, allowing to stand for 3-5 minutes, then adding fiber aqueous solution obtained in step (i), stirring evenly, blow drying and vacuum drying in oven at 50-60 degrees C for 20-24 hours to obtain acetylated monomer A, (iii) mixing 6-hydroxy-2-naphthoic acid and remaining acetic anhydride, placing in oil bath at 120-130 degrees C, carrying out insulation reaction for 3-4 hours, then adding cyanoethyl cellulose, stirring, discharging, placing the material into its weight 1.6-2 times the ice water, allowing to stand for 3-5 minutes, blow drying and vacuum drying in oven at 50-60 degrees C for 20-24 hours to obtain acetylated monomer D, (iv) taking alkylated diphenylamine, adding to 27-30 times absolute ethanol, stirring, adding microcrystalline wax, elevating at 76-80 degrees C, heat stirring for 10-13 minutes, adding calcium phosphate, and then reacting under ultrasound for 1-2 minutes to obtain alcohol dispersion liquid, (v) taking graphene oxide, adding to its weight of 100-120 times absolute ethanol, adding alcohol dispersion obtained in step (iv), stirring, carrying out ultrasonic dispersion for 50-60 minutes, then adding acetylated monomer A and acetylated monomer D, reacting under ultrasound for 30-40 minutes, vacuum distilling, and then drying product under vacuum at 60-70 degrees C for 20-25 hours to obtain monomer pretreatment graphene, (vi) adding and mixing monomer pre-treated graphene, zinc acetate into reactor, elevating temperature of 240-250 degrees C under nitrogen atmosphere, carrying out insulation reaction for 3-4 hours, reacting at 270-280 degrees C for 1-2 hours, and then reacting 290-300 degrees C for 30-40 minutes, and then cooling the material to obtain graphene co-polyester composite material, (vii) adding potassium fluoroaluminate into deionized water of 17-20 times its weight, stirring uniformly, adding hydrolyzed polymaleic anhydride, raising temperature to 60-70 degrees C, and stirring for 4-8 minutes, and continuously agitating for 20-30 minutes, filtering and drying the precipitate at room temperature to obtain modified graphene co-polyester composite material, and (viii) mixing modified graphene co-polyester composite material with remaining raw materials, stirring uniformly, feeding into extruder and melt-extruding, and melt is pressed into a plate by a three-roll pressing machine, and then stretching to obtain final product.