Fan main shaft lubricating grease composition and preparation method thereof
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A lubricating grease composition and fan technology, applied in the field of lubricating grease, can solve the problems that the polyurea thickener cannot show extreme pressure and anti-wear properties, and the complex lithium grease cannot meet the anti-fretting wear performance, etc., and achieve excellent anti-wear Water performance, excellent anti-wear and anti-friction properties, and low quality loss
Inactive Publication Date: 2017-03-15
CHINA PETROLEUM & CHEM CORP
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[0003] At present, the lubricating grease for the main shaft of the fan is mainly a lithium complex thickener or a polyurea thickener, and the lithium complex
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[0024] The preparation method steps are as follows:
[0025] 1) Heat 75%-85% base oil and 12-hydroxystearic acid to 80-90°C, add 10%-20% lithium hydroxide solution and all calcium hydroxide solution to start the reaction. Control the temperature at 90-100°C and add dibasic acid; after stirring for 30-40 minutes, when the temperature is between 90-120°C, start to add the remaining lithium hydroxide solution dropwise;
[0026] 2) After the reaction is completed, stir and heat to 130-140°C, keep the temperature for 60-90min, add antioxidant, continue heating to 200-210°C, add the remaining base oil to cool down, cool down to below 80°C and add extreme pressure anti-wear agent , anti-rust and anti-corrosion agent, after stirring evenly, after processing and homogenizing three times by a three-roller machine, the finished product is filled.
Embodiment 1
[0029] Thickener: 12.0%
[0030] Among them, the proportion of 12-hydroxystearic acid is 85.7%; the proportion of dodecanedibasic acid is 14.3%
[0031] The proportion of lithium hydroxide is 95.2%; the proportion of calcium hydroxide is 4.8%
[0032] Base oil: 84.4% (low sulfur paraffin-based mineral oil: 100%, base oil 40 ° C kinematic viscosity: 142.5mm 2 / s)
[0038] Among them, the proportion of 12-hydroxystearic acid is 75%; the proportion of dodecanedibasic acid is 25%
[0039] The proportion of lithium hydroxide is 75%; the proportion of calcium hydroxide is 25%
[0040] Base oil: 87.7% (of which low-sulfur paraffin-based mineral oil: 77%, PAO synthetic oil: 23%, base oil 40 ° C kinematic viscosity: 602.5mm 2 / s)
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Abstract
The invention relates to a fan main shaft lubricating grease composition and a preparation method thereof. The composition comprises 7-15% of a thickener, 80-90% of base oil, 1.5-3.0% of an anti-wear reagent at extreme pressure, 0.5-2.0% of an antioxidant and 0.1-0 .5% of an anti-rust preservative. The thickener is composite lithium-calcium soap. The preparation method comprises heating 75-85% of base oil and 12-hydroxystearic acid to 80 to 90 DEG C, adding 10-20% of a lithium hydroxide solution and all calcium hydroxide solution into the base oil and 12-hydroxystearic acid to start a reaction, controlling a temperature to 90 to 100 DEG C, adding a dibasic acid into the mixture, stirring the mixture for 30 to 40 minutes, then adding the rest of the lithium hydroxide solution into the mixture at a temperature of 90 to 120 DEG C drop by drop, after the reaction, heating the reaction product to 130 to 140 DEG C along with stirring, keeping the temperature for 60 to 90 minutes, adding the antioxidant into the reaction product, heating the mixture to 200 to 210 DEG C, adding the rest of the base oil into the reaction product, cooling the mixture, adding the anti-wear reagent at extreme pressure and anti-rust preservative into the mixture when the temperature is 80 DEG C or less, carrying out uniform stirring, carrying out treatment homogenization through a three-roller machine to obtain a finished product and carrying out filling. The fan main shaft lubricating grease composition is characterized in that the excellent compatibility anti-wear reagent at extreme pressure and the special anti-rust preservative are used so that the main shaft lubricating grease extreme pressure properties are greatly improved and the anti-rust performance is excellent.
Description
technical field [0001] The invention belongs to the technical field of lubricating grease, and relates to a fan main shaft lubricating grease component and a preparation method thereof. The prepared lubricating grease adopts scientifically designed base oil, the thickener adopts complex lithium-calcium soap, and additives such as antioxidant, anti-rust and anti-corrosion agent and extreme pressure anti-wear agent are added. The preparation process of the lubricating grease adopts the direct saponification method. Among them, the extreme pressure agent with excellent compatibility and the special antirust agent are the main innovation points of the present invention, which greatly improves the extreme pressure performance of the spindle lubricating grease and has better antirust performance. Background technique [0002] China's wind energy reserves are large and widely distributed. The wind energy reserves on land alone are about 253 million kilowatts. With the development...
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