▎ 摘　　要

NOVELTY - Preparing perfume volatile medium graphite core rod, comprises (i) placing 400-450 pts. wt. solvent in glass reactor, then adding 12-18 pts. wt. 4, 4'-diaminodiphenyl ether, 10-16 pts. wt. 9, 9-bis(4-aminophenyl)fluorene, 3-7 pts. wt. dimethylsilyl diethylamine and introducing nitrogen, (ii) then adding 0.02-0.1 pts. wt. catalyst, 0.5-2.6 pts. wt. methyl nonenoate and 0.5-2.5 pts. wt. eugenol, then distilling to remove white oil to obtain polyamic acid solution, (iii) mixing 0.3-3 pts. wt. graphene oxide with 50-100 pts. wt. deionized water, adding 0.2-1.2 50-100 pts. wt. auxiliary dispersant and ultrasonically processing to obtain graphene oxide dispersion liquid, and (iv) taking graphene oxide dispersion liquid and polyamic acid solution to obtain polyimide precursor/graphene oxide composite sponge to obtain polyimide/reduced graphene oxide composite sponge, processing to obtain final product. USE - The graphite core rod is useful in the field of perfume volatile materials. ADVANTAGE - The graphite core rod has excellent high and low temperature resistance, excellent mechanical performance, improves the amount of perfume adsorption, reduces adsorption time, and improves recycling efficiency of volatile rods. DETAILED DESCRIPTION - Preparing perfume volatile medium graphite core rod, comprises (i) placing 400-450 pts. wt. solvent in glass reactor, then adding 12-18 pts. wt. 4, 4'-diaminodiphenyl ether, 10-16 pts. wt. 9, 9-bis(4-aminophenyl)fluorene, 3-7 pts. wt. dimethylsilyl diethylamine, 30-55 pts. wt. norbornene-2-spiro-α-cyclopentanone-α'-spiro-2'-norbornane-5, 5', 6, 6'-tetracarboxylic dianhydride, introducing nitrogen, carrying out reaction under the set reaction conditions, (ii) then adding 0.02-0.1 pts. wt. catalyst, 0.5-2.6 pts. wt. methyl nonenoate and 0.5-2.5 pts. wt. eugenol, controlling the temperature and reacting for 2-4 hours, then distilling to remove white oil to obtain polyamic acid solution, (iii) mixing 0.3-3 pts. wt. graphene oxide with 50-100 pts. wt. deionized water, adding 0.2-1.2 50-100 pts. wt. auxiliary dispersant and ultrasonically processing to obtain graphene oxide dispersion liquid, and (iv) taking graphene oxide dispersion liquid and polyamic acid solution according to volume ratio of 1:1.5-3, stirring uniformly, freezing for 10-16 hours, vacuumizing, freezing and drying for 30-50 hours to obtain polyimide precursor/graphene oxide composite sponge, heating the prepared composite sponge in nitrogen atmosphere, maintaining the temperature for 2-5 hours to obtain polyimide/reduced graphene oxide composite sponge, after cutting, processing to obtain final product.