Lubricating grease for hub bearing of heavy load truck and preparation method thereof

A technology for automobile wheels and lubricating grease, which is applied in lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of complex production process of polyurea-based lubricating grease, poor colloidal stability, and high production investment cost, and achieve improvement Colloidal stability and mechanical stability, the effect of improving the efficiency of saponification reaction and shortening the production time

Inactive Publication Date: 2013-12-18
JIANGSU LOPALTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN101194004A introduces a hub bearing lubricating grease prepared from polyurea-based thickened mineral oil or synthetic oil. greater pollution to the environment
Patent CN102140382A introduces a wheel hub bearing lubricating grease and its preparation method, but the product prepared by this patent not only has poor high temperature resistance, the dropping point is only 280°C, and the colloidal stability of the product is not good, and the result of steel mesh oil separation is relatively large
Patent CN102399615A introduces a lubricating grease for automobile wheel hub bearings and its preparation method. The patent uses an aqueous solution of lithium hydroxide and calcium hydroxide, and uses complex lithium soap as the thickener. The preparation process is saponification and dehydration. The time is long, the production efficiency is low, and the process is not easy to control
CN102618368A also introduces a kind of lubricating grease for heavy-duty automobile hubs and its preparation method. The product has excellent high temperature resistance, mechanical stability, water resistance and extreme pressure and wear resistance, but its production process adopts a pressure-tight reactor. High investment cost and certain safety issues

Method used

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  • Lubricating grease for hub bearing of heavy load truck and preparation method thereof
  • Lubricating grease for hub bearing of heavy load truck and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take mineral base oil 150BS1800kg and 400SN1300kg and mix it as the test base oil. Take 1000kg of mixed base oil and 48.8kg of sebacic acid into the saponification reaction kettle, stir and heat up to 134°C, after the sebacic acid is completely dissolved, add 415.3kg of 12-hydroxystearic acid to completely dissolve, then add 1000kg of The above-mentioned mixed base oil lowers the temperature in the kettle to 85°C, then adds 167kg of lithium hydroxide oil solution, and after saponification reaction for 45 minutes, the temperature is rapidly raised to 110°C, and 30kg of boric acid dissolved in 3 times of water is added, and the compound reaction is stirred at constant temperature for 30 Minutes, finally raise the temperature to 225°C, keep the temperature for 3 minutes, then transfer to the blending kettle, add 1100kg of mixed base oil to cool down, homogenize at 115°C, 22MPa pressure for 2h, wait until the temperature in the blending kettle drops to 95°C, add octane Base...

Embodiment 2

[0029] Take mineral base oil 150BS1500kg and 500SN1200kg and mix it as the test base oil. Take 1000kg of mixed base oil and 112kg of sebacic acid and add them to the saponification reactor, stir and heat up to 136°C, after the sebacic acid is completely dissolved, add 330kg of 12-hydroxystearic acid to completely dissolve, then add 1200kg of the above mixed For a good base oil, lower the temperature in the kettle to 80°C, then add 188kg of lithium hydroxide oil solution, and quickly heat up to 115°C after 60 minutes of saponification, add 34kg of boric acid dissolved in 4 times the water, and stir at a constant temperature for 45 minutes. Finally, heat up to 220°C, keep the temperature for 5 minutes, then transfer to the blending kettle, add 800kg of mixed base oil to cool down, homogenize at 120°C, 25MPa pressure for 1.5h, wait until the temperature in the blending kettle drops to 90°C, add octyl in turn / Butyl diphenylamine 10kg, 2,6-di-tert-butyl-p-cresol 10kg, dinonylnapht...

Embodiment 3

[0031]Take mineral base oil 150BS2000kg and PAO101000kg and mix it as the test base oil. Take 1000kg of mixed base oil and 102kg of sebacic acid into the saponification reactor, stir and heat up to 135°C, after the sebacic acid is completely dissolved, add 300kg of 12-hydroxystearic acid to completely dissolve, then add 1000kg of the above mixed For a good base oil, lower the temperature in the kettle to 90°C, then add 172kg of lithium hydroxide oil solution, and quickly heat up to 120°C after saponification reaction for 60 minutes, add 30.4kg of boric acid dissolved in 4 times of water, and stir for 45 minutes at a constant temperature. , and finally raise the temperature to 230°C, keep the temperature for 3 minutes, then transfer to the blending kettle, add 1000kg of mixed base oil to cool down, homogenize at 115°C, 20MPa pressure for 2h, wait until the temperature in the blending kettle drops to 100°C, add octyl in turn / Butyl diphenylamine 12kg, dinonyl naphthalene barium ...

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Abstract

The invention relates to a lubricating grease and a preparation method thereof, particularly relates to a lubricating grease for a hub bearing of a heavy load truck and a preparation method thereof, and belongs to the technical field of a chemical industry. The lubricating grease is prepared from the following raw materials: (A) base oil which accounts for 60-85% of total weight of the lubricating grease, (B) a thickening agent, which is C12-C22 unitary organic acid which accounts for 7-12% of total weight of the lubricating grease, 0.5-3% of sebacic acid, 0.2-1% of boric acid, and 3-5% of lithium hydroxide oil solution, (C) an additive, which is thiocarbamate which accounts for 0.5-3% of total weight of the lubricating grease, 2-5% of sulfide olefin cottonseed oil, 2-4% of dialkyl dithiocarbamate salt, 0.5-2.5% of molybdenum dialkyl dithiophosphate, 0.3-2% of antirust agent and 0.3-1% of antioxidant. The lubricating grease has the beneficial effects that the production time is shortened; the lubricating grease is more controllable in process, stable in product quality, less in seepage loss of a high-temperature bearing, and prominent in extreme pressure property; lubricating protection can be better provided for hubs of the heavy load truck; the lubricating requirements of the hub bearing of the heavy load truck under various working conditions can be met; the grease exchange period of the hub bearing is prolonged.

Description

technical field [0001] The invention relates to a lubricating grease and a preparation method thereof, in particular to a lubrication for heavy-duty automobile hub bearings and a preparation method thereof, belonging to the technical field of chemical engineering. Background technique [0002] Along with the large-scale infrastructure construction and the rapid development of the logistics industry, the development of heavy vehicles and high-speed buses is also getting faster and faster. In 2010, the sales volume of heavy trucks in China reached 1.0148 million units, a year-on-year increase of 59.5%. The number of heavy trucks increased from 1.4828 million units in 2002 to 4.1648 million units in 2010. The demand for wheel hub bearing grease for heavy trucks and high-speed buses is also increasing , the performance requirements of the grease are getting higher and higher. At present, the lubricating grease of automobile hub bearings in my country is mainly based on lithium-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M123/02C10M113/00C10M113/08C10N40/02C10N50/10C10N30/08C10N30/06C10N30/02
Inventor 石俊峰杨操严军表
Owner JIANGSU LOPALTECH
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