Nano molybdenum disulfide lubricating oil and preparation method thereof
A nano-molybdenum disulfide, molybdenum disulfide technology, applied in lubricating compositions, petroleum industry, additives, etc., can solve the development and application of two-dimensional nano-flaky MoS2, which restricts the yield, structure, morphology, cost and stability And other issues
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[0033] In one aspect of the present invention, the present invention proposes a method for preparing nano molybdenum disulfide lubricating oil. According to an embodiment of the present invention, refer to figure 1 , the preparation method comprises:
[0034] S100: preparing a reaction solution.
[0035] In this step, a reaction solution including a molybdenum-containing compound, a sulfur-containing compound and an organic amine is prepared, so that two-dimensional nano-sheet molybdenum disulfide can be synthesized through subsequent heating reaction.
[0036] According to an embodiment of the present invention, the carbon chain length of the organic amine in the reaction solution can be C16-C22, so, the use of long-chain organic amines can make the nano-molybdenum disulfide lubricating oil added with two-dimensional nano-sheet molybdenum disulfide The temperature resistance is better, thereby increasing the performance of the lubricating oil prepared. In some embodiments ...
Embodiment 1
[0057] In this example, two-dimensional nanosheet molybdenum disulfide was prepared. The specific steps are as follows:
[0058] (a) 3mmol sodium molybdate and 15mmol thioacetamide are mixed with 10mL cetylamine;
[0059] (b) Stir the above mixed solution under the protection of nitrogen with a purity of 99.9%, heat the mixture to 100°C and keep it for 15 minutes to form a transparent orange-red solution, then increase the temperature to 180°C and keep it for 30 minutes, then cool to room temperature, a black liquid was obtained;
[0060] (c) Centrifuge the above black liquid to obtain a black precipitate, wash the black precipitate once with cyclohexane, then wash three times with ethanol, and then place it in a vacuum drying oven at 40°C for 6 hours to obtain the oil-soluble bismuth Dimensional nanosheet MoS 2 .
Embodiment 2
[0062] In this example, two-dimensional nanosheet molybdenum disulfide was prepared. The specific steps are as follows:
[0063] (a) 2.5mmol ammonium molybdate and 50mmol L-cysteine are mixed with 30mL heptadecylamine;
[0064] (b) Stir the above mixed solution under the protection of nitrogen with a purity of 99.9%, heat the mixture to 120°C and keep it for 30 minutes to form a transparent orange-red solution, then raise the temperature to 200°C and keep it for 120 minutes, then cool to room temperature, a black liquid was obtained;
[0065] (c) Centrifuge the above black liquid to obtain a black precipitate, wash the black precipitate twice with cyclohexane, then wash twice with ethanol, and then place it in a vacuum drying oven at 60°C for 8 hours to obtain the oil-soluble bismuth Dimensional nanosheet MoS 2 .
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