▎ 摘　　要

NOVELTY - Agricultural machinery lubricating oil comprises 60-70 pts. wt. graphene, 45-65 pts. wt. propolis extract, 30-40 pts. wt. dodecyl mercaptan, 120-160 pts. wt. epoxidized soybean oil, 1.8-2.0 pts. wt. dodecanedioic acid, 10-13 pts. wt. magnesium stearate, 7-10 pts. wt. sodium lignosulfonate, 7-10 pts. wt. potassium tartrate and 4-6 pts. wt. coconut oleic acid diethanolamide. USE - The agricultural machinery lubricating oil is useful in cylinder and piston. ADVANTAGE - The lubricating oil applied to the cylinder and the piston does not have abrasion, while the common lubricating oil applied to the cylinder has more or less abrasion which can be seen by naked eyes, and the oil consumption of the lubricating oil is less and is only 4.6-5.0 L/100 km. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing agricultural machinery lubricating oil which involves: (1) feeding the propolis extract, magnesium stearate and dodecyl mercaptan into a reaction kettle, adding deionized water which is 1.4-1.7 times of the mass of the propolis extract at 30-34 degrees C, grinding for 20-26 minutes, stirring for 10-14 minutes in a clockwise direction at a stirring speed of 70-100 revolutions per minute (r/min), obtaining a viscous stirring liquid Q after stirring is finished, and storing in another container for later use; (2) adding dodecanedioic acid, the viscous stirring liquid Q and the epoxidized soybean oil into high-shear equipment according to the mass ratio of 1.8-2.0: 3.5-5.0: 120-160, and uniformly stirring to obtain a material W for later use; drying the material W, airing the material W in sunlight for 3-8 minutes, adding the material W into a mixed solution of modified peanut powder and distilled water, heating the material W in a water bath at the ultrasonic frequency of 95-105 kHz at 75-80 degrees C for 1-3 hours, cooling the material W, taking the material out to obtain modified material D, and uniformly mixing graphene, sodium lignosulfonate and the modified material D under a high-speed shearing state to obtain a treated matter X for later use; (3) stirring potassium sodium tartrate, coconut diethanolamide and the treated matter X at 40-50 degrees C for 1-2 hours to recover to normal temperature, and then blending by using pneumatic pulse for 20-30 hours to obtain the agricultural machinery lubricating oil.