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Low-temperature extreme pressure lubricating grease composition and preparation method thereof

A technology of extreme pressure lubrication and composition, applied in the field of lubricating oil, can solve the problems of grease anti-corrosion, rust resistance not meeting requirements, poor, easy to thicken lubrication and other problems, and achieve excellent extreme pressure anti-wear, anti-rust Good performance, anti-corrosion and rust effect

Inactive Publication Date: 2016-09-07
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of lubricating grease generally adopts base oil with medium viscosity or higher and supplemented with extreme pressure antiwear agent or solid lubricant to obtain high extreme pressure and antiwear performance. Although it can meet the load-bearing performance of the supporting device, it is easy to change at low temperature Thickness causes poor lubrication
Usually, the solution to take into account the low temperature and extreme pressure anti-wear properties of grease is to use low-viscosity base oil with a higher concentration of extreme-pressure anti-wear agent or solid lubricant, but this method is likely to cause the grease to resist corrosion and prevent corrosion. Rust does not meet the requirements

Method used

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Examples

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preparation example Construction

[0045]The present invention also provides a method for preparing the above-mentioned low-temperature extreme-pressure grease composition, which is characterized in that it comprises the following steps:

[0046] A) the fatty acid and the first base oil are mixed and heated, then the metal lye is added to carry out the saponification reaction, and after the reaction is finished, a reaction gel is obtained;

[0047] B) Heating the reaction gel to heat up to obtain the sol, then add the second base oil, then add extreme pressure antiwear agent, antioxidant, corrosion inhibitor, rust inhibitor and solid lubricant, mix evenly, cool After obtaining the mixture;

[0048] C) Grinding and homogenizing the mixture to obtain a low temperature extreme pressure grease composition.

[0049] In the invention, firstly, the fatty acid and the first base oil are mixed and heated, and then metal lye is added to carry out saponification reaction, and the reaction gel is obtained after the reacti...

Embodiment 1

[0064] Weigh 326.25g of HVIⅡ6 hydrogenated oil and 65g of dodecyl hydroxystearic acid, raise the temperature to 85°C to completely melt the dodecyl hydroxystearic acid, stir at constant temperature for 8min, continue to heat up to 95°C, and slowly add LiOH lye (containing 9.17 g lithium hydroxide monohydrate). After the dropwise addition, slowly raise the temperature and keep stirring. After the dehydration is completed, the temperature is rapidly raised to 200°C, and 108.75g of diisooctyl sebacate is added for rapid cooling, and 17.5g of oil agent potassium borate and 5g of dialkyl dithiophosphoric acid are added. Zinc, 1.5g of diphenylamine, 1.5g of benzotriazole and 2.5g of metal deactivator T561 were fully stirred evenly, naturally cooled to below 70°C, ground by a colloid mill and homogenized by a homogenizer, and samples were collected. Sample 1 / 4 working cone penetration (25°C) value is 70 (0.1mm), similar viscosity (-30°C, 10s -1 ) value is 620Pa·s, low temperature to...

Embodiment 2

[0066] Weigh 216.25g of 100N hydrogenated oil and 67.5g of dodecyl hydroxystearic acid, heat up to 85°C to completely melt dodecyl hydroxystearic acid, stir at constant temperature for 10min, add calcium hydroxide emulsion (containing 1.93g of anhydrous calcium oxide) , Stir and react at a constant temperature of 75°C to 90°C for 30 minutes, continue to heat up to 95°C, and slowly add LiOH lye (containing 6.67g of lithium hydroxide monohydrate) dropwise. After the dropwise addition, raise the temperature slowly and keep stirring. After the dehydration is completed, the temperature is raised rapidly to 205°C, and 216.25g of 100N hydrogenated oil is added for rapid cooling, and 15g of oil agent potassium borate, 6g of zinc dialkyldithiophosphate, 2.5g Diphenylamine, 1.5g benzotriazole and 3g metal deactivator T561 were fully stirred evenly, cooled naturally to below 70°C, ground by a colloid mill and homogenized by a homogenizer, and samples were collected. Sample 1 / 4 working co...

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Abstract

The invention provides a low-temperature extreme pressure lubricating grease composition. The low-temperature extreme pressure lubricating grease composition has appropriate penetration to ensure effective lubrication of equipment and reduction lubricating grease attenuation and loss, has a small low-temperature torque and low similar viscosity to ensure the liquidity of the lubricating grease at the low temperature of -40 DEG C and facilitate diffusion or carrying to lubricating points, has excellent extreme pressure abrasion resistance and good water resistance to effectively prevent poor lubrication caused by water inflow to a system when being used outdoors and has good corrosion resistance and rust protection to effectively prevent equipment corrosion and rust in the using process.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a low-temperature extreme-pressure lubricating grease composition and a preparation method thereof. Background technique [0002] The supporting device is one of the key core components of the truck, which is used to separate and connect the tractor head and the semi-trailer compartment, and is used to support the front mass of the compartment after separation to maintain a horizontal state. Generally, it is driven by manpower and mechanical transmission The lifting method is the main one. Supporting devices are generally required to have the characteristics of high strength, high load, and low quality to ensure that they can function reliably, safely and quickly. The type, basic parameters, technical requirements, and inspection rules of the supporting device are uniformly regulated. [0003] The supporting device adopts the gear transmission mode, and the ...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M177/00C10N20/02C10N30/00C10N30/06C10N30/12
CPCC10M169/06C10M177/00C10M2201/066C10M2201/087C10M2203/003C10M2205/0206C10M2207/126C10M2207/1285C10M2207/282C10M2215/064C10M2215/223C10M2219/044C10M2223/045C10N2030/02C10N2030/06C10N2030/12C10N2030/26C10N2010/02C10N2010/04
Inventor 龙胜前卢现菊欧阳秋马宏李姝熊瑶
Owner CHINA PETROLEUM & CHEM CORP
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