▎ 摘　　要

NOVELTY - Preparing modified graphene oxide/epoxy composite material comprises adding 15-25 pts. wt. graphene oxide into 90-100 pts. wt. distilled water, ultrasonicating for 2.5-3.5 hours, pouring the ultrasonically dispersed dispersion into a three-necked flask, stirring at 80-90 degrees C with a magnetic stirrer, adding 2-4 pts. wt. n-Dodecyl-beta-D-maltoside, reacting for 25-27 hours, hot vacuum filtering, rinsing with ethanol for 4 -6 times, drying product obtained by suction filtration in a vacuum oven at 40-45 degrees C, drying, grinding filter cake to obtain graphene oxide-n-Dodecyl-beta-D-maltoside, separately drying ethylene propylene and curing agent in a vacuum oven at 105-115 degrees C for 13-15 hours, pretreating to remove bubbles and moisture, dispersing 10-20 pts. wt. graphene oxide-n-Dodecyl-beta-D-maltoside in 75-85 pts. wt. acetone solution, ultrasonically oscillating for 2.5-3.5 hours and then adding ice to the ultrasound to prevent the water temperature in the ultrasound system from rising. USE - The method is useful for preparing modified graphene oxide/epoxy composite material. ADVANTAGE - The material: has excellent mechanical property, high tensile strength and impact strength. DETAILED DESCRIPTION - Preparing modified graphene oxide/epoxy composite material comprises adding 15-25 pts. wt. graphene oxide into 90-100 pts. wt. distilled water, ultrasonicating for 2.5-3.5 hours, pouring the ultrasonically dispersed dispersion into a three-necked flask, stirring at 80-90 degrees C with a magnetic stirrer, adding 2-4 pts. wt. n-Dodecyl-beta-D-maltoside, reacting for 25-27 hours, hot vacuum filtering, rinsing with ethanol for 4 -6 times, drying product obtained by suction filtration in a vacuum oven at 40-45 degrees C, drying, grinding filter cake to obtain graphene oxide-n-Dodecyl-beta-D-maltoside, separately drying ethylene propylene and curing agent in a vacuum oven at 105-115 degrees C for 13-15 hours, pretreating to remove bubbles and moisture, dispersing 10-20 pts. wt. graphene oxide-n-Dodecyl-beta-D-maltoside in 75-85 pts. wt. acetone solution, ultrasonically oscillating for 2.5-3.5 hours, adding ice to the ultrasound to prevent the water temperature in the ultrasound system from rising, adding 25-35 pts. wt. ethylene propylene, ultrasonically oscillating for 1.5-2.5 hours, placing the ultrasonically finished beaker in a 50-60 degrees C environment, stirring for 11-13 hours with a mechanical stirrer, placing beaker in a vacuum oven at 50-60 degrees C for 17-19 hours to ensure complete removal of the acetone, adding 8-10 pts. wt. epoxy curing agent into the beaker, stirring at 450 revolutions per minute for 15-20 minutes with a mechanical stirrer, adding into a vacuum oven for 40-50 minutes to remove the bubbles in the ethylene propylene, defoaming, pouring ethylene propylene into a tetrafluoroethylene mold, solidifying, curing at 25-35 degrees C for 25-27 hours and then cooling to obtain final product.