磺酸钙/油酸改性碳基二硫化钼的制备及在乳化油中的摩擦学性能

doi:10.11896/cldb.22090049

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Abstract In order to study the modification of MoS₂/C composite powder and its effect on the lubricating performance of emulsified oil, the powder was prepared and modified in situ by plasma assisted ball milling with expanded graphite and MoS₂ as raw materials, oleic acid and high alkali calcium sulfonate as modifiers. The powder was characterized by scanning electron microscope, transmission electron microscope, Raman spectrum and infrared spectrometer. The results show that after 20 h of plasma assisted ball milling, under the synergistic effect of plasma thermal explosion, the expanded graphite is continuously sheared and peeled off to form a near graphene lamellar structure, part of MoS₂ is refined into a flake shape of about 20 nm, and part of MoS₂ splashes onto the graphite layer due to thermal explosion and forms a graphene coated spherical structure due to cold condensation. These MoS₂ particles are uniformly attached to the carbon based ink lamellar layer. At the same time, during the ball milling process, the carboxyl group in oleic acid reacts with the hydroxyl group of expanded graphite and calcium sulfonate to complete the surface modification of the powder. The powder has a large degree of lipophilicity and can inhibit the oxidation of MoS₂/C. The prepared modified MoS₂/C was added to the emulsified oil for tribological performance test. It was found that the modified MoS₂/C was deposited and adsorbed on the surface wear marks, and a layer of sulfuric acid/sulfonate chemical film was formed on the surface of the friction pair, which effectively suppressed the influence of water on the friction reduction and self-healing performance of MoS₂/C and kept the emulsified oil with good lubricating performance.

Key words： carbon based molybdenum disulfide calcium sulfonate plasma assisted ball milling emulsified oil tribological property

Published: 25 January 2024 Online: 2024-01-26

CLC number:

TB383

Fund:National Natural Science Foundation of China(52372361) and the Natural Science Foundation of Fujian Province(2021J01848,2020J01687).

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	Articles by authors
	CHAO Yunxuan
	DAI Leyang
	WEI Yukun
	WANG Yongjian
	DU Jinhong

Cite this article:

CHAO Yunxuan,DAI Leyang,WEI Yukun, et al. Preparation of Calcium Sulfonate/OA Modified Carbon Based Molybdenum Disulfide and Its Tribological Properties in Emulsified Oil[J]. Materials Reports, 2024, 38(2): 22090049-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22090049 OR http://www.mater-rep.com/EN/Y2024/V38/I2/22090049

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