▎ 摘　　要

NOVELTY - Preparing modified cyanate ester resin, involves mixing potassium hydroxide, imidazole compound, 4,4'-dihydroxydiphenyl ether, graphene oxide and deionized water, ultrasonically dispersing to obtain mixture (A), dissolving manganese acetate tetrahydrate in deionized water to obtain mixture (B), dripping mixture (A) in mixture (B) and then stirring, reacting, filtering, washing the filtrate, drying to obtain graphene oxide-manganese-based metal organic material, and adding cyanate ester to graphene oxide-manganese-based metal organic material and then curing. USE - The method is useful for preparing modified cyanate ester resin (claimed). ADVANTAGE - The method is capable of preparing modified cyanate ester resin in an easy and economical manner. DETAILED DESCRIPTION - Preparing modified cyanate ester resin, involves mixing 10 pts. wt. potassium hydroxide, 6-6.3 pts. wt. imidazole compound, 23-24 pts. wt. 4,4'-dihydroxydiphenyl ether, 0.3-1.7 pts. wt. graphene oxide and 6-7 pts. wt. deionized water, ultrasonically dispersing the mixture at 55-65 degrees C for 30-35 minutes to obtain mixture (A), dissolving 10 pts. wt. manganese acetate tetrahydrate in 20.4-61.2 pts. wt. deionized water to obtain mixture (B), dripping 70 pts. wt. mixture (A) in 5.4-16.2 pts. wt. mixture (B) and then stirring, reacting the mixture at 70-80 degrees C for 20-25 hours, filtering the mixture, washing the filtrate, drying to obtain graphene oxide-manganese-based metal organic material, and adding 100 pts. wt. cyanate ester to 0.503-4.167 pts. wt. prepared graphene oxide-manganese-based metal organic material and then curing.