Synthetic high-temperature lubricating grease and production method thereof
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A grease, high-temperature technology, applied in lubricating compositions, petroleum industry, base materials, etc., can solve the problems of coking and carbonization, thinning loss, bearing scrapping, etc. effect of benefit
Inactive Publication Date: 2010-04-14
CHINA PETROLEUM & CHEM CORP
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[0002] With the rapid development of industries such as metallurgy, mining, building materials, petrochemicals, machinery manufacturing, food processing, textile printing and dyeing, and papermaking, the load requirements of bearings in these industries are increasing, and the temperature requirements are increasing. Traditional high-temperature grease In use, it cannot meet the requirements of use, and the phenomenon of thinning, loss and coking and carbonization often occurs, resulting in the scrapping of bearings. In production, a lubricating grease with suitable high temperature performance and good extreme pressure and anti-wear properties is extremely needed to reduce the scrapping rate of bearings. , to ensure the smooth progress of production
Method used
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Embodiment 1
[0045] Add 38.0g of ethylene propylene copolymer, 38.0g of trimethylolpropane into the reactor and raise the temperature to 50°C, stop heating, add 5.97g of octylamine and 4.03g of TDI, react for 30 minutes, add 0.66g of decylamine, 0.45g of phenylenediamine , 1.464g TDI and 0.42g cyclohexanol, react for 30 minutes, heat the fat to 150°C, add 5g calcium stearylamide and 2g sodium hexadecylamide, puff for 30 minutes, add 0.5g diphenylamine, 0.5g benzene For triazole, cool to room temperature, add 3g of zinc dialkyl dithiophosphate, grind three times with three rounds of grinding, and then pack.
Embodiment 2
[0047] Add 77.5g of trimethylolpropane to the reaction kettle and raise the temperature to 50°C, stop heating, add 2.2g of decylamine, 1.5g of phenylenediamine, 4.88g of TDI and 1.4g of cyclohexanol, react for 30 minutes, and heat up to 150°C , add 6.0g lithium hexadecylamide and 2.0g calcium dodecylamide, expand for 30 minutes, add 0.5g diphenylamine, 0.5g N-phenyl-α-naline, 0.5g benzothiazole, cool to room temperature Add 1.0g of zinc dialkyldithiophosphate and 2.0g of organic molybdenum, grind three times with a three-wheel mill and discharge, then pack.
Embodiment 3
[0049] Add 78.5g of polyethylene glycol into the reactor and raise the temperature to 50°C, stop heating, add 0.824g of cyclohexylamine, 0.5g of ethylenediamine, 2.9g of TDI and 1.78g of tetradecyl alcohol, react for 30 minutes, and heat up to 150°C , add 4.0g lithium hexadecylamide and 8.0g sodium laurylamide, expand for 30 minutes, add 0.5g diphenylamine, 0.5g benzothiazole, cool to room temperature and add 2.0g zinc dialkyl dithiophosphate , 1.0g of sulfurized olefin, three-wheel mill grinding three times, discharging, packaging.
[0050] Example performance
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[0052] project
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Abstract
The invention discloses a synthetic high-temperature lubricating grease and a production method thereof. The synthetic high-temperature lubricating grease is produced by taking synthetic oil as base oil and mixing the base oil with thickening agents, an extreme-pressure additive, an antioxidant and an anticorrosive agent, wherein the weight ratios of all ingredients are as follows: 47-94% of base oil, 2-20% of polyurea thickening agent, 2-20% of acylamide thickening agent, 0.5-5.0% of antioxidant, 1.0-5.0% of extreme-pressure additive and 0.5-3.0% of anticorrosive agent. In the invention, the synthetic base oil, the polyurea thickening agent and the acylamide thickening agent all have excellent high-temperature performance, and the organic combination thereof leads the lubricating grease to obtain excellent high-temperature performance; the polyurea thickening agent endows the lubricating grease with good colloid stability, and the acylamide thickening agent endows the lubricating grease with excellent anti-shear stability, therefore, the organic combination of colloid stability and anti-shear stability leads the lubricating grease to have excellent high-temperature performance and good losing resistance, does not change to thin and avoids losing at high temperature. The extreme-pressure anti-wear additive endows the lubricating grease with excellent extreme-pressure anti-wear performance, and the bearing capacity is high.
Description
Technical field: [0001] The invention relates to a lubricating grease composition, in particular to a synthetic lubricating grease with synthetic oil as base oil and polyurea and amide salt mixed thickener. Background technique [0002] With the rapid development of industries such as metallurgy, mining, building materials, petrochemicals, machinery manufacturing, food processing, textile printing and dyeing, and papermaking, the load requirements of bearings in these industries are increasing, and the temperature requirements are increasing. Traditional high-temperature grease In use, it cannot meet the requirements of use, and the phenomenon of thinning, loss and coking and carbonization often occurs, resulting in the scrapping of bearings. In production, a lubricating grease with suitable high temperature performance and good extreme pressure and anti-wear properties is extremely needed to reduce the scrapping rate of bearings. , to ensure the smooth progress of productio...
Claims
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