High-performance complex lithium-calcium base grease composition and method for preparing same
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A lithium-calcium complex and lubricating grease technology, used in lubricating compositions, petroleum industry, etc., can solve the problems of complex methods and difficult control in industrial production, achieve outstanding shear performance, good extreme pressure and anti-wear performance, and eliminate overflowing kettles. effect of inclination
Active Publication Date: 2013-01-16
埃优诺特种新材料科技(山东)有限公司
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Problems solved by technology
This type of lubricating grease has the same excellent mechanical stability as the complex calcium sulfonate grease, but because the production method of this lubricating grease is the same as that of complex calcium sulfonate, it needs to invert the phase of high-basic calcium sulfonate, so the method is relatively Complex, difficult to control in industrial production
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Embodiment 1
[0043] Put 87Kg of 12-hydroxystearic acid, 600Kg of HVI150BS lubricating base oil with a kinematic viscosity of 32CSt at 100°C, and 25.7Kg of azelaic acid into a 1600L normal-pressure reactor with heating and stirring, mix and stir, and heat up to 90°C , slowly add 37.5Kg of lithium hydroxide suspension, keep warm for 20 minutes, add 0.6Kg of calcium hydroxide emulsion, heat up to 210°C, add 250Kg of quenching oil, cool down to 100°C, add potassium triborate dispersion additive 0.8-1.5 %, 1-2% antimony dioxane dithiocarbamate, 3-5% light calcium carbonate, 0.3% p-dioctyl diphenylamine, stirred for 30 minutes, cooled to below 100°C, circulated, homogenized, Degassing becomes the finished product. The test results are shown in Table 1.
[0044] The inspection data of table 1 embodiment 1
[0045] project
[0046] Extended work penetration (100,000 times), 1 / 10mm
Embodiment 2
[0048]Put 72Kg of 12-hydroxystearic acid, 33Kg of stearic acid, 550Kg of 150SN lubricating base oil with a kinematic viscosity of 105CSt at 40°C, and 23.8Kg of adipic acid into a normal pressure reactor with a volume of 1600L with heating and stirring, and mix and stir , heat up to 90°C, slowly add 44.4Kg of lithium hydroxide suspension, keep warm for 25 minutes, add 0.62Kg of lithium hydroxide suspension, heat up to 210°C, add 280Kg of quenching oil, cool down to 100°C, add triboric acid Potassium dispersion additive 1-2%, zinc dioxane dithiocarbamate 0.5-1%, light calcium carbonate 3-5%, 0.3% octyl / butyl diphenylamine, stir for 30 minutes, cool down to 100°C Next, circulation, homogenization, and degassing become finished products. The test results are shown in Table 2.
[0049] The inspection data of table 2 embodiment 2
[0050] project
[0051] Water resistance (38℃, 1h)
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Abstract
The invention discloses high-performance complex lithium-calcium base grease composition and a method for preparing the same. The high-performance complex lithium-calcium base grease comprises the following raw materials by proportion: (A) base oil which is 50-95 percent of the total weight of the high-performance complex lithium-calcium base grease, (B) C12-C22 monoprotic organic acid in which the thickening agent is 3-15 percent of the total weight of the high-performance complex lithium-calcium base grease, and (C) additive. The method for preparing the high-performance complex lithium-calcium base grease comprises the following steps: adding and stirring the base oil, the monoprotic organic acid and binary low-molecular acid, heating the mixture to 80-100 DEG C, adding calcium hydroxide suspension, adding calcium hydroxide emulsion, preserving the heat of the mixture for 10-40 min, heating the mixture, adding the residual base oil, cooling the mixture, adding the additive composition, decreasing the temperature of the mixture to blow 100 DEG C, homogenizing and degassing the mixture to obtain the finished product. The high-performance complex lithium-calcium base grease has good shearing performance, high dropping point and excellent extreme pressure anti-wear performance, is easy to prepare and can save the energy.
Description
technical field [0001] The present invention relates to a high-performance composite lithium-calcium-based lubricating grease composition and a preparation method thereof, in particular to a high-dropping-point composite lithium-calcium-based lubricating grease combination with outstanding shear properties, extreme pressure performance and oxidation stability substances and their preparation methods. Background technique [0002] In recent years, with the development of the machinery and equipment manufacturing industry, higher and higher requirements have been put forward for lubricants, and compound thickener greases have been greatly developed, among which lithium-composite and lithium-calcium-compound greases have become Very important lubricating grease, the proportion of annual output in the grease production has been increasing year by year, and it has become a hot spot in the research of high-performance lubricating grease. Therefore, there are a lot of patent litera...
Claims
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