Degradable lubricating grease for locomotive wheel flange and preparation method

A technology of lubricating grease and rims, which is applied in the field of lubricating materials in the chemical industry, can solve problems such as soil, water and air pollution, destroy the ecological environment and ecological balance, and achieve the effect of excellent conventional physical and chemical properties

Inactive Publication Date: 2013-04-03
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While lubricating grease, due to penetration, leakage, overflow and improper handling, etc., it is easy to cause pollution to soil, water and air, and destroy the ecological environment and ecological balance, which has become a practical problem that cannot be ignored.

Method used

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  • Degradable lubricating grease for locomotive wheel flange and preparation method
  • Degradable lubricating grease for locomotive wheel flange and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A lithium-based lubricating grease for locomotive rims (i.e. degradable lubricating grease for locomotive rims) of this embodiment is prepared from the following raw materials in weight percentage: 83wt% diisooctyl adipate is used as the base oil , 11wt% thickening agent (it is made up of 12-hydroxystearic acid and the lithium hydroxide aqueous solution that concentration is 15wt%, and the molar ratio of 12-hydroxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-hydroxystearate lithium soap), add 1.5wt% tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (antioxidant 1010), 2wt% Barium petroleum sulfonate (petroleum sulfonate), 1 wt% polyisobutylene, 1 wt% molybdenum dibutyldithiocarbamate, 0.5 wt% graphite.

[0038] The above-mentioned preparation method of degradable lubricating grease for a locomotive wheel rim adopts a one-step saponification method, comprising the following steps:

[0039] 1) Select raw mate...

Embodiment 2

[0042] A lithium-based lubricating grease for locomotive rims (i.e., degradable lubricating grease for locomotive rims) of this embodiment is prepared from the following raw materials in weight percentage: 84wt% diisooctyl adipate is used as the base oil , the thickening agent of 10wt% (it is made up of the lithium hydroxide aqueous solution of 15wt% by 12 hydroxystearic acid and concentration, the mol ratio of 12-hydroxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12 -Lithium hydroxystearate soap), add 1.5wt% tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol (antioxidant 1010), 2wt% petroleum Barium sulfonate, 1 wt% polyisobutylene, 1 wt% molybdenum dibutyldithiocarbamate, 0.5 wt% graphite.

[0043] The above-mentioned preparation method of degradable lubricating grease for a locomotive wheel rim adopts a one-step saponification method, comprising the following steps:

[0044] 1) Select raw materials according to the above...

Embodiment 3

[0047] A lithium-based lubricating grease for locomotive rims (i.e. degradable lubricating grease for locomotive rims) of this embodiment is prepared from the following raw materials in weight percentages: 82wt% diisooctyl adipate is used as the base oil , 12wt% thickening agent (it is made up of 12-hydroxystearic acid and the lithium hydroxide aqueous solution that concentration is 15wt%, and the molar ratio of 12-hydroxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-hydroxystearate lithium soap), add 1.5wt% tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (antioxidant 1010), 2wt% Barium petroleum sulfonate, 1 wt% polyisobutylene, 1 wt% molybdenum dibutyldithiocarbamate, 0.5 wt% graphite.

[0048] The above-mentioned preparation method of degradable lubricating grease for a locomotive wheel rim adopts a one-step saponification method, comprising the following steps:

[0049] 1) Select raw materials according to th...

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Abstract

The invention relates to degradable lubricating grease for a locomotive wheel flange, and a preparation method. The degradable lubricating grease for the locomotive wheel flange is characterized in that the degradable lubricating grease is prepared by the following raw materials by weight percent: 70%-86% of base oil, 10%-20% of thickening agent, 1%-5% of antioxygen, 1%-3% of antirust agent, 0.5%-3% of EP (extreme pressure) anti-wear reagent, 1%-4% of tackifier and 0.5%-2% of graphite. A one-step saponification method synthesis process is adopted. The dropping point of the lubricating grease is above 180 DEG C, the cone penetration is approximately 28mm, and the lubricating grease has excellent colloid stability, corrosion resistance and EP wear resistance, and is applicable to boundary lubrication of the railway locomotive wheel flange. The lubricating grease has excellent conventional physical and chemical properties and good ecological characteristics, enters a natural environment with the rotation of the wheel flange, and can be degraded into water and carbon dioxide naturally, thereby meeting environmental requirements.

Description

technical field [0001] The invention relates to a degradable lubricating grease for locomotive wheel rims and a preparation method, belonging to the technical field of lubricating materials in the chemical industry. Background technique [0002] With the development of railway transportation, the requirements for the train itself have been further increased, especially in terms of load capacity and speed. And along with the raising of speed, the increase of load, the wearing and tearing of train rim is also aggravated greatly, meanwhile, the wearing and tearing to railroad track also obviously increases. The maintenance and replacement of wheel rims have caused huge waste, and the waste of replacement of rails is even greater. Therefore, lubricating the contact surface between the locomotive wheel rim and the rail can reduce the friction coefficient and reduce friction. While lubricating grease, due to penetration, leakage, overflow and improper handling, etc., it is easy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00
Inventor 胡萍潘濛黄晟汇熊先江田子云刘洋谭淼淼周伟杰
Owner WUHAN UNIV OF TECH
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