Lubricating oil additive containing lipophilic graphene and mesocarbon microspheres and preparation method thereof
A technology of mesocarbon microspheres and lubricating oil additives, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve problems such as large friction coefficient, damage to mechanical parts, and poor storage stability of nano-additives, so as to reduce mechanical wear, Improved stability and lubricating performance, improved dispersibility
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Embodiment 1
[0019] First, take 0.05g of graphene oxide and add it into a 50mL aqueous ethanol flask, ultrasonically disperse it for 30 minutes, then add 0.05g of dodecyltrimethoxysilane dropwise to the flask, and raise the temperature to 70 ℃, condensed and refluxed, stirred for 1 h, after the reaction was completed, an appropriate amount of hydrazine hydrate solution with a concentration of 0.1 mol / mL was added dropwise, and reduced at 40 °C for 0.5 h. The black precipitate was collected by centrifugation, washed three times with ethanol aqueous solution, and dried in a vacuum oven at 60°C to obtain the product, which was lipophilic graphene.
[0020] Then, weigh 0.5 g of mesocarbon microspheres, 500 g of petroleum ether, and place 0.5 g of Span 80 on a QM-3SP2 planetary ball mill with ball milling at a speed of 430 rpm for 5 hours to obtain a uniform slurry of mesocarbon microspheres. solvent to obtain mesophase carbon microspheres.
[0021] Weigh 0.1g of lipophilic graphene, 0.5g of t...
Embodiment 2
[0023] First, take 0.05g of graphene oxide and add it to a 50mL aqueous ethanol flask, ultrasonically disperse it for 30min, then add 1g of dodecyltriethoxysilane dropwise to the flask, and raise the temperature to 70 ℃, condensed and refluxed, stirred for 2 hours, after the reaction was completed, an appropriate amount of hydrazine hydrate solution with a concentration of 0.1mol / mL was added dropwise, and reduced at 40℃ for 2 hours. The black precipitate was collected by centrifugation, washed three times with ethanol aqueous solution, and dried in a vacuum oven at 60°C to obtain the product, which was lipophilic graphene.
[0024] Then, take by weighing 0.5 g of mesocarbon microspheres, 500 g of petroleum ether, and place 80 5 g of Span on a QM-3SP2 planetary ball mill with ball milling at a speed of 430 rpm for 5 h to obtain a uniform mesocarbon microsphere slurry, remove the solvent , to obtain mesocarbon microspheres.
[0025] Weigh 0.5g of lipophilic graphene, 0.1g of t...
Embodiment 3
[0027] First, take 0.05g of graphene oxide and add it to a flask containing 50mL of ethanol aqueous solution, ultrasonically disperse it for 30min, then add 1g of hexadecyltrimethoxysilane dropwise into the flask, and raise the temperature to 70°C after the dropwise addition , condensed and refluxed, stirred for 2 hours, after the reaction was completed, an appropriate amount of hydrazine hydrate solution with a concentration of 0.1mol / mL was added dropwise, and reduced at 40°C for 1 hour. The black precipitate was collected by centrifugation, washed three times with ethanol aqueous solution, and dried in a vacuum oven at 60°C to obtain the product, which was lipophilic graphene.
[0028] Then, take by weighing 0.5 g of mesocarbon microspheres, 500 g of petroleum ether, and place 80 5 g of Span on a QM-3SP2 planetary ball mill with ball milling at a speed of 430 rpm for 5 h to obtain a uniform mesocarbon microsphere slurry, remove the solvent , to obtain mesocarbon microsphere...
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