▎ 摘　　要

NOVELTY - Preparation of graphene oxide self-healing polymer involves adding 30-40 g dimer acid and 12.3-16.4 g diethylenetriamine to 100 mL three-necked bottle, magnetically stirring, condensing, refluxing at 160 degrees C for 24 hours, continuously protecting using nitrogen gas, forming dendritic oligomer, dividing 35 g prepared dendritic oligomer into 7 portions, adding 7 portions of dendritic oligomers to 7 portions of graphene oxide such that 7 portions of graphene oxide are 0.05 g, 0.15 g, 0.25 g, 0.35 g, 0.45 g, 0.55 g and 0.65 g, respectively, further adding 1.18 g urea to each portion, carrying out crosslinked polymerization reaction at 135-160 degrees C for 4 hours, and obtaining graphene oxide self-healing polymer with content of 1%, 3%, 5%, 7%, 9%, 11%, and 13%, respectively. USE - Preparation of graphene oxide self-healing polymer. ADVANTAGE - The method efficiently provides graphene oxide self-healing polymer having excellent mechanical performance. DETAILED DESCRIPTION - Graphene oxide is obtained by adding 1-1.5 g graphite, 10 mL phosphoric acid and 90 mL sulfuric acid to 500 mL three-necked flask, dividing 6 g potassium permanganate into 12 times, uniformly adding to three-necked bottle for 1 minute, stirring in 4 degrees C water bath for 1 hour, heating to 50 degrees C, continuously stirring for 24 hours, pouring resultant product into 250 mL 0 degrees C ice water, adding 30% hydrogen peroxide solution until the color of the solution turns golden yellow, centrifuging the product to pH of 7 using 5 vol.% dilute hydrochloric acid solution and distilled water, washing the precipitate using distilled water, pouring washed viscous precipitate into 100 mL beaker, ultrasonically processing at the power of 150 W for 120 minutes, and drying in vacuum oven at 70 degrees C for 48 hours.