A kind of lubricating oil composition
A lubricating oil composition and flake technology, applied in the field of lubricating oil, can solve the problems of reducing the use effect of lubricating oil, difficult to guarantee the quality, and contributing to the normal, and achieve the improvement of lubricity and chemical stability, improvement of viscosity-temperature performance and price. low cost effect
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Embodiment 1
[0026] A lubricating oil composition, comprising the following raw materials in parts by weight:
[0027]
[0028] Wherein, the preparation method of the flaky nano chromium oxide of the surface modification comprises the following steps:
[0029] 1) Preparation of flaky nano-chromium oxide: Add 20 g of chromium acetate to 300 g of deionized water, and then add NH 3 ·H 2 O until pH = 8, stirred at room temperature for 1.5 h, and then transferred to a high-pressure reactor with a polytetrafluoroethylene liner. The reaction kettle was put into an oven, kept at 180°C for 22h, and finally cooled to room temperature naturally. The precipitate obtained by the reaction was filtered and washed with absolute ethanol and three times of water respectively for 5 times, and then placed in a vacuum oven at 60°C for 10 hours, and finally, the obtained precursor was calcined in a muffle furnace at 300°C After 3.5 hours, flaky chromium oxide was obtained;
[0030] 2) Surface modificatio...
Embodiment 2
[0034] A lubricating oil composition, comprising the following raw materials in parts by weight:
[0035]
[0036] Wherein, the preparation method of the flaky nano chromium oxide of the surface modification comprises the following steps:
[0037] 1) Preparation of flaky nano-chromium oxide: Add 20 g of chromium acetate to 320 g of deionized water, and then add NH 3 ·H 2 O until pH = 8.5, after stirring at room temperature for 1.7 h, transfer to a high-pressure reactor with a polytetrafluoroethylene liner. The reaction kettle was put into an oven, kept at 190°C for 24h, and finally cooled to room temperature naturally. The precipitate obtained from the reaction was filtered and washed 6 times with absolute ethanol and three times of water respectively, and then placed in a vacuum oven at 70°C for 12 hours, and finally, the obtained precursor was calcined in a muffle furnace at 300°C After 4 hours, flaky chromium oxide was obtained;
[0038] 2) Surface modification of fl...
Embodiment 3
[0042] A lubricating oil composition, comprising the following raw materials in parts by weight:
[0043]
[0044] Wherein, the preparation method of the flaky nano chromium oxide of the surface modification comprises the following steps:
[0045] 1) Preparation of flaky nano-chromium oxide: Add 20 g of chromium acetate to 350 g of deionized water, and then add NH 3 ·H 2O until pH = 9, after stirring for 2 h at room temperature, transfer to a high-pressure reactor with a polytetrafluoroethylene liner. The reaction kettle was put into an oven, kept at 185°C for 24h, and finally cooled to room temperature naturally. The precipitate obtained from the reaction was filtered and washed 6 times with absolute ethanol and three times of water respectively, and then placed in a vacuum oven at 72°C for 13 hours, and finally, the obtained precursor was calcined in a muffle furnace at 300°C After 4 hours, flaky chromium oxide was obtained;
[0046] 2) Surface modification of flaky n...
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Abstract
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