A functional graphene/montmorillonite/modified molybdenum sulfide lubricating oil additive
A lubricating oil additive, molybdenum sulfide technology, applied in the directions of additives, petroleum industry, lubricating compositions, etc., can solve the problems of unreported friction surface repair ability, low friction coefficient, low friction coefficient, etc., and achieve a significant intelligent repair effect. , low cost, the effect of improving hardness
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Embodiment 1
[0025] (1) First, 160 g of an aqueous dispersion of graphene oxide having a concentration of 0.025 wt % was prepared. Then, 6 mL of silane coupling agent (A-1100) was added, and magnetically stirred at room temperature for 1 h. Finally, it was transferred to a flask and reacted in a water bath at 80°C for 2h. After separation and cleaning, an appropriate amount of deionized water is added to obtain an aqueous dispersion of functional graphene oxide.
[0026] (2) Weigh 0.04g of molybdenum sulfide and add water and stir evenly to obtain an aqueous dispersion of molybdenum sulfide, add 6mL of silane coupling agent (A-1100) and stir at room temperature for 1h, heat at 80°C for 2h, separate and wash to obtain modified vulcanization molybdenum.
[0027] (3) Take the above-mentioned modified molybdenum sulfide, 0.16g of montmorillonite and the above-mentioned functional graphene oxide aqueous dispersion and mix and stir for 1h; transfer to the reaction kettle for 4h of hydrothermal...
Embodiment 2
[0031] (1) First, 160 g of an aqueous dispersion of graphene oxide having a concentration of 0.025 wt % was prepared. Then, 1 mL of silane coupling agent (A-1110) was added and reacted at 25° C. for 5 h. After separation and cleaning, an appropriate amount of deionized water is added to obtain an aqueous dispersion of functional graphene oxide.
[0032] (2) Weigh 0.01 g of molybdenum sulfide, add water and stir evenly to obtain an aqueous dispersion of molybdenum sulfide, add 0.5 mL of silane coupling agent (A-1110) to react at 25° C. for 8 hours, separate and wash to obtain modified molybdenum sulfide.
[0033] (3) Mix and stir the aqueous dispersion of the above-mentioned modified molybdenum sulfide, 0.02g montmorillonite and the above-mentioned functional graphene oxide for 0.5h; transfer to an autoclave for 200°C hydrothermal reaction for 1h, let it stand for cooling; separate, wash, Dry to obtain functional graphene / montmorillonite / modified molybdenum sulfide composite l...
Embodiment 3
[0037] (1) First, 160 g of an ethanol dispersion of graphene oxide having a concentration of 0.025 wt % was prepared. Then, 8 mL of silane coupling agent (A-1120) was added, and the mixture was refluxed at 80° C. for 1 h. After separation and cleaning, an appropriate amount of ethanol is added to obtain an ethanol dispersion of functional graphene oxide.
[0038] (2) Weigh 0.16g of molybdenum sulfide and add ethanol and stir evenly to obtain ethanol dispersion of molybdenum sulfide, add 16mL of silane coupling agent (A-1120) to react at 60°C for 3h, separate and wash to obtain modified molybdenum sulfide.
[0039] (3) Take the above-mentioned modified molybdenum sulfide, 0.32g montmorillonite and the ethanol dispersion of the above-mentioned functional graphene oxide and mix and stir for 2h; transfer to a flask and heat at reflux for 5h at 100°C, let stand and cool; separate, wash, and dry to obtain Functional graphene / montmorillonite / modified molybdenum sulfide composite lub...
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Abstract
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