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Preparation method of piece-shaped tungsten disulfide nanometer lubricating oil additive

A lubricating oil additive, tungsten disulfide technology, applied in the direction of additives, chemical instruments and methods, nanotechnology, etc., can solve the problems of many defects in material morphology, low purity of nanosheets, affecting friction performance, etc., to achieve low cost, The effect of short reaction time and easy operation

Inactive Publication Date: 2013-01-09
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

WS prepared by this method 2 Nanosheets have defects such as low purity, many material morphology defects, and low specific surface area, which affect the improvement of their friction properties.

Method used

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  • Preparation method of piece-shaped tungsten disulfide nanometer lubricating oil additive
  • Preparation method of piece-shaped tungsten disulfide nanometer lubricating oil additive
  • Preparation method of piece-shaped tungsten disulfide nanometer lubricating oil additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Weigh tungsten powder (purity 99%) and sulfur powder (purity 99.9%) according to the molar ratio of 1:3, mix them into a stainless steel ball mill tank, use stainless steel balls as the ball milling medium, the ball material ratio is 10:1, and mill at 200rmp 4h. Then transfer it to a stainless steel reactor; place the reactor in a high-temperature box furnace, raise the temperature in the furnace to 750°C at a heating rate of 10°C / min, and keep it warm for 1h; naturally cool the temperature in the high-temperature box furnace to At room temperature (about 5 hours), the obtained dark brown powder is the flaky tungsten disulfide nano lubricating oil additive.

[0014] figure 1 It is the XRD pattern of flaky tungsten disulfide nano lubricating oil additive synthesized by solid phase method. from figure 1 It can be seen that all the XRD peak positions in the figure are consistent with the standard diffraction pattern (JCPDS84-1398), and there are no other miscellaneous p...

Embodiment 2

[0017] Weigh tungsten powder (purity 99%) and sulfur powder (purity 99.9%) according to the molar ratio of 1:2.5, mix them into a stainless steel ball mill tank, use stainless steel balls as the ball milling medium, the ball-to-material ratio is 10:1, and mill at 200rmp 4h. Then transfer to a stainless steel reaction kettle; place the reaction kettle in a high-temperature box furnace, raise the temperature in the furnace to 650°C at a heating rate of 10°C / min, and keep it warm for 1h; naturally cool the temperature in the high-temperature box furnace to At room temperature (about 5 hours), the obtained dark brown powder is the flaky tungsten disulfide nano lubricating oil additive.

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Abstract

The invention relates to manufacture of lubricating oil, in particular to a preparation method of a-piece shaped tungsten disulfide nanometer lubricating oil additive. The preparation method comprises the steps as follows: weighing raw materials which are respectively the tungsten powder and sulfur powder based on the mol ratio of the tungsten to the sulfur of 1: 2.5 to 1: 3; mixing the tungsten powder and the sulfur powder through ball milling, and then adding the mixture to a reaction kettle; transferring the reaction kettle under a protective atmosphere of 600 to 800 DEG C, and annealing for 0.5 to 2 hours at constant temperature; and then naturally cooling to reach the room temperature, so as to obtain the piece-shaped WS2 nanometer lubricating oil additive. According to the preparation method of the piece-shaped tungsten disulfide nanometer lubricating oil additive provided by the invention, a solid phase synthesis technology is applied to synthesizing an inorganic micro-nanometer material; the preparation method has the advantages of being simple in technology, simple and convenient to operate, controllable in temperature, and short in response time; and the preparation method is low in cost, and is suitable for large-scale industrial production; and compared with traditional preparation method, the tungsten powder is adopted to replace the tungsten oxide, thus higher purity of WS2 is achieved, as well as nice appearance; and moreover, higher specific surface area and the tribological properties can be obtained.

Description

technical field [0001] The invention relates to the manufacture of lubricating oil, in particular to a method for preparing a flaky tungsten disulfide nano lubricating oil additive using nanometer materials. Background technique [0002] Transition metal sulfides have a layered structure similar to graphite sheets, with strong covalent bonds within the layers and weak van der Waals forces between the layers. The layers are easy to peel off and have good anisotropy. and a lower coefficient of friction. WS 2 As a typical transition metal sulfide, it is widely used due to its unique physical and chemical properties, such as solid lubricants, desulfurization catalysts in petrochemical production, elastic coating materials, hydrogen storage materials, lithium storage electrode materials, catalytic hydrogenation Wait. [0003] So far, people have done a lot of research on the synthesis of WS2 nanomaterials, mainly including hydrothermal method, thermal decomposition method, hig...

Claims

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Application Information

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IPC IPC(8): C01G41/00B82Y30/00C10M125/22C10N30/06
Inventor 唐国钢李长生唐华王凤栾丹
Owner ZHENJIANG COLLEGE
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