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Prepn process of graphite/organic molybdenum lubricant oil prepn

An organic molybdenum and lubricating oil technology, which is applied in the petroleum industry, lubricating compositions, additives, etc., can solve the problems such as the inability to give full play to the role of organic molybdenum additives, frictional oxidation, and the limitation of addition amount.

Inactive Publication Date: 2007-10-31
刘洪良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used organic molybdenum preparations are prone to frictional oxidation and are corrosive to mechanical equipment, so the amount of addition is limited to a certain extent. These defects make it impossible to give full play to the role of organic molybdenum additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] In order to prevent the graphite additive from precipitating and dispersing well in the lubricating oil, it is necessary to micro-expand the graphite and process it into micro-expanded graphite. The expansion process of micro-expanded graphite is to use graphite with a purity of 99.9%, grind it to a particle size of 1-3 μm with a jet mill, and then add graphite powder containing a certain amount of natural moisture to the pressure-burst graphite expansion equipment. Seal the unit and fill it with compressed air to start heating. When the temperature of graphite reaches 110°~160°C, the compressed air in the equipment reaches 0.3~0.8MPa / CM 2 , keep for 10 minutes. Then suddenly open the valve to release the pressure in the equipment suddenly. At this time, due to the sudden release of temperature and pressure, the crystal lattice of graphite is loosened to form micro-expanded graphite, and most of the water in graphite is also released. Then enter the drying box to dry,...

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Abstract

The present invention is preparation process of machine lubricating oil with graphite / organic molybdenum compound as additive. The machine lubricating oil is prepared with graphite 0.3-10 wt%, liposoluble organic molybdenum compound 0.5-15 wt%, dispersant 4-6 wt% and base lubricating oil 70-95 wt%. The graphite is slightly expanded graphite prepared through an abrupt pressure reducing process, and the liposoluble organic molybdenum compound is molybdenum oxide dialkyl dithio phosphate. The graphite / organic molybdenum lubricating oil has the characteristic of the base lubricating oil maintained as well as functions of resisting wear, reducing friction, resisting extreme pressure friction, resisting oxidation, etc.

Description

technical field [0001] The invention relates to a preparation method of lubricating oil, in particular to a preparation method of mechanical lubricating oil agent with graphite / organic molybdenum as additive. Background technique [0002] Friction and wear are the main causes of material damage and mechanical equipment scrapping in today's world. Lubrication technology is an effective means to reduce friction and wear, and an important means of lubrication technology is to use lubricants. Lubricants can be divided into liquid lubricants and solid lubricants. It is through the lubricant attached or coated on the surface of the friction pair to form a lubricating transfer film on the friction surface through the friction and wear process to improve the contact condition between the friction pair, thus playing an effective role in reducing friction and antiwear. [0003] Graphite is a good solid lubricant. At present, there are products that use solid graphite as lubricating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M137/10C10M125/02C10N30/06
Inventor 刘洪良
Owner 刘洪良