Preparation of dimer acid lanthanum extreme pressure anti-wear additive and energy-saving anti-wear hydraulic oil including dimer acid lanthanum extreme pressure anti-wear additive

Abstract

The invention belongs to the field of hydraulic oil and particularly relates to preparation of a dimer acid lanthanum extreme pressure anti-wear additive and an energy-saving anti-wear hydraulic oil including the dimer acid lanthanum extreme pressure anti-wear additive. The preparation of the dimer acid lanthanum extreme pressure anti-wear additive comprises the steps that a La(NO3)3 solution is dropwise added into a specially-made alkali solution, and after a complete reaction, standing filtering and drying are carried out for use. The energy-saving anti-wear hydraulic oil is prepared from basic oil, the dimer acid lanthanum extreme pressure anti-wear additive, an antioxidant, an anti-rusting agent, a viscosity index improving agent, a pour point reducer and a defoaming agent. Carboxyl of dimer acid lanthanum (the dimer acid lanthanum extreme pressure anti-wear additive) can be effectively adsorbed to the surface of a friction pair, and the friction coefficient of the surface of the friction pair is reduced; in the friction process, rare earth elements rub the surface to diffuse to a matrix to form a permeation layer, the anti-wear property and the friction coefficient of the material surface are improved, and the anti-wear effect and the energy-saving effect are achieved; the dimer acid lanthanum extreme pressure anti-wear additive has a good anti-wear property, a good anti-rusting property, a good anti-corrosion property and the like; the rare earth compound dimer acid lanthanum is applied to hydraulic oil, and thus the hydraulic oil can have the excellent properties.

Description

technical field [0001] The invention belongs to the field of hydraulic oil, and in particular relates to the preparation of a lanthanum dimer extreme pressure antiwear agent and energy-saving antiwear hydraulic oil containing the lanthanum dimer extreme pressure antiwear agent. Background technique [0002] In the middle of the 20th century, with the rise of modern industry in Western countries, hydraulic technology was widely used, and hydraulic oil was also produced; by the 1970s, high-pressure, high-speed and high-power hydraulic equipment compatible with modern large-scale industries had become quite common; Some equipment has abnormal phenomena during daily operation, and it is found through inspection that the original hydraulic oil can no longer meet the requirements of harsh working conditions. For oil products in working condition, under the action of temperature and pressure, the physical adsorption film formed only by base oil can no longer guarantee the safe lubr...

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Problems solved by technology

[0002] In the middle of the 20th century, with the rise of modern industry in Western countries, hydraulic technology was widely used, and hydraulic oil was also produced; by the 1970s, high-pressure, high-speed and high-power hydraulic equipment compatible with modern large-scale industries had become quite common; Some equipment has abnormal phenomena during daily operation. After inspection, it is found that the original hydraulic oil can no longer meet the requirements of harsh working conditions.

[0003] However, the traditional lanthanum dimer extreme pressure antiwear agent faces the above-mentioned environmental protection problems, and has poor multifunctionality, anti-oxidation, anti-cleaning properties and weak repair functions.

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