▎ 摘　　要

NOVELTY - Preparing microemulsion cutting fluid comprises (i) dissolving graphene oxide in deionized water, and ultrasonically dispersing for 2-3 hours to form brown dispersion solution, slowly adding sodium borohydride at 60-80degreesC and stirring for 1-3 hours, (ii) dissolving sulfonamide and nitrate in a hydrochloric acid solution, stirring magnetically for 4-6 hours under ice bath conditions, (iii) adding sulfonated graphene/MoS2 nanocage into a ball mill, ball milling at a speed of 1200-1500 revolutions/minute for 2-3 hours, (iv) taking 25-28 pts. wt. biodegradable base oil, and adding 6-8 pts. wt. OP-10 NP emulsifier and mixing, (v) taking 110-135 pts. wt. deionized water, adding 26-34 pts. wt. sulfonated graphene/MoS2 nanocage, 6-9 pts. wt. glycerin and 3-5 pts. wt. propylene glycol, and stirring, and (vi) mixing the oil-based mixture and water-based mixture, stirring at 720-850 revolutions/minute until the liquid is uniform and transparent. USE - The fluid is useful for aluminum alloy processing of aeroengine. DETAILED DESCRIPTION - Preparing microemulsion cutting fluid comprises (i) dissolving graphene oxide in deionized water, and ultrasonically dispersing for 2-3 hours to form brown dispersion solution, adjusting the pH to 9-10 with carbonate solution, slowly adding sodium borohydride at 60-80degreesC and stirring for 1-3 hours, re-dispersing the partially reduced graphene oxide in deionized water, and the pH value is neutral 7 after centrifuging and washing with deionized water for 3-5 times, (ii) dissolving sulfonamide and nitrate in a hydrochloric acid solution with a mass ratio of 23:9, slowly adding the mixture to the dispersion solution with a pH of 7, and stirring magnetically for 4-6 hours under ice bath conditions, dispersing the product in deionized water again for dispersion, centrifuging and washing with deionized water for 3-5 times, adding hydrazine hydrate, and magnetically stirring at 100degreesC for 24-36 hours, centrifuging and washing with deionized water for 3 to 5 times to obtain sulfonated graphene, dispersing the sulfonated graphene in deionized water and ultrasonically processing for 2-3 hours to form a uniform dispersion, adding soluble molybdenum salt and sulfur powder to hydrazine hydrate and N,N-dimethylformamide to form a brown mixed liquid, the volume ratio of hydrazine hydrate and N,N-dimethylformamide is 1:1 under the condition of (10000-15000 revs/min), adding the brown mixed liquid dropwise to the sulfonated graphene dispersion, and adding hydrogen peroxide at the same time, centrifuging the obtained product, washing with deionized water for 3-5 times, and freeze-drying 12-24 hours finally formed sulfonated graphene/MoS2 nanocage, (iii) adding the sulfonated graphene/MoS2 nanocage into a ball mill, ball milling at a speed of 1200-1500 revolutions/minute for 2-3 hours, and placing sulfonated graphene/MoS2 nanocage in ethylene glycol 4-6 times its weight, adding 2-3 pts. wt. dimethyl sulfate and 1-2 pts. wt. sodium dodecyl sulfonate, stirring evenly, ultrasonically processing for 20-25 minutes, the ultrasonic frequency is 240-360 kHz, (iv) taking 25-28 pts. wt. biodegradable base oil, and adding 6-8 pts. wt. OP-10 NP emulsifier and mixing, adding 3-4 pts. wt. triethanolamine, 2-4 pts. wt. polyethylene wax, 2-3 pts. wt. complex surfactant, 1-3 pts. wt. barium petroleum sulfonate rust inhibitor and 1-2 pts. wt. polyether defoamer, stirring, (v) taking 110-135 pts. wt. deionized water, and adding 26-34 pts. wt. sulfonated graphene/MoS2 nanocage, 6-9 pts. wt. glycerin and 3-5 pts. wt. propylene glycol, and stirring, and (vi) mixing the oil-based mixture and water-based mixture, stirring at 720-850 revolutions/minute until the liquid is uniform and transparent.