A kind of oil-water type bentonite-polyurea composite grease composition and preparation method thereof

A technology of grease composition and bentonite grease, which is applied in the field of grease, can solve problems such as low consistency, service temperature, and poor lubricity, and achieve the effects of low cost, stable performance, and good cooling effect

Active Publication Date: 2022-06-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with oil-soluble grease, the consistency is low, and the adhesion and lubricity need to be further improved
Although the performance of the oil-water type bentonite grease prepared by adding a certain amount of base oil to the water-based grease has been improved, it is still poor in terms of operating temperature and lubricity.

Method used

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  • A kind of oil-water type bentonite-polyurea composite grease composition and preparation method thereof
  • A kind of oil-water type bentonite-polyurea composite grease composition and preparation method thereof
  • A kind of oil-water type bentonite-polyurea composite grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example ---

[0105] Preparation Example---Preparation of Polyurea Grease

[0106] 400g PAO4 lubricating base oil (100℃ kinematic viscosity is 4mm 2 / s) Stir and heat up, heat up to 52-55°C, add 33g of octadecylamine and 12g of cyclohexylamine, stir for 30min, add 34g of diphenylmethane diisocyanate at 70-80°C to react for 30min, continue to heat up the reaction to 205°C Stop heating, keep the temperature for 15min, pour 150g PAO4, cool down to 130℃, add 4g extreme pressure antiwear agent and 1g rust inhibitor, stir for 30min, grind and homogenize to obtain polyurea grease.

Embodiment 1

[0108] Add 4g of polyethylene glycol 2000 to 36g of water, keep the temperature at 20°C, stir well, and dissolve completely to obtain a mixed solution. Then 27 g of organic amine modified montmorillonite was added to the mixture, and stirred for 15 min. Then slowly add 3g of propylene carbonate in a thin stream, stir well for 30min, and then add 30g of PAO4 lubricating base oil (kinematic viscosity at 100°C is 4mm 2 / s), continue to heat up to 60° C., stir for 15 minutes, add 400 g of polyurea grease after stirring evenly, grind and homogenize to obtain oil-water bentonite-polyurea composite grease. The physicochemical properties of the obtained lipids are shown in Table 1.

[0109] The percentage of each component used for preparing the oil-water type bentonite-polyurea compound grease is: polyethylene glycol: 0.8%; water: 7.2%; PAO 4: 6%; bentonite: 5.4%; propylene carbonate: 0.6%; Polyurea Grease: 80%.

Embodiment 2

[0111] Add 4g of polyethylene glycol 2000 to 36g of water, keep the temperature at 20°C, stir well, and dissolve completely to obtain a mixed solution. Then 20 g of organic amine modified montmorillonite was added to the mixed solution, and stirred for 15 min. Then slowly add 5g of propylene carbonate in a thin stream, stir well for 30min, and then add 35g of PAO4 lubricating base oil (kinematic viscosity at 100°C is 4mm 2 / s), continue to heat up to 60° C., stir for 15 minutes, add 100 g of polyurea grease after stirring evenly, grind and homogenize to obtain oil-water bentonite-polyurea composite grease. The physicochemical properties of the obtained lipids are shown in Table 1.

[0112] The percentage of each component used for preparing the oil-water type bentonite-polyurea compound grease is: polyethylene glycol: 2%; water: 18%; PAO 4: 17.5%; bentonite: 10%; propylene carbonate: 2.5%; Polyurea Grease: 50%.

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Abstract

Disclosed are an oil-water type bentonite-polyurea composite grease composition and a preparation method thereof. The oil-water type bentonite-polyurea compound lubricating grease composition comprises the following components: water, base oil, surfactant, organic bentonite, auxiliary dispersant, and polyurea lubricating grease. The oil-water type bentonite-polyurea composite grease of the present application has certain mechanical stability and colloidal stability; compared with the oil-water type bentonite grease, the performance on cone penetration and dropping point has been further improved, and because it has a water base The performance of lubricating grease has good application prospects in some special occasions, especially suitable for working conditions at room temperature; moreover, the amount of base oil in the oil-water type bentonite-polyurea composite grease of this application is small, and the cooling effect is good , Easy to clean, low cost, stable performance, suitable for one-time use at room temperature.

Description

technical field [0001] The present application relates to grease, in particular to an oil-water bentonite-polyurea composite grease composition and a preparation method thereof. Background technique [0002] The environment is the basis for human beings and other life to survive. With the continuous improvement of people's awareness of the environment and the increasing attention paid to the ecological environment by the international community, the problem of environmental pollution caused by lubricating grease has attracted more and more attention. Grease has serious defects such as poor biodegradability, high ecotoxicity and great environmental pollution, which cannot meet the urgent needs of human beings to protect the environment. [0003] In recent years, the research on biodegradable lubricating grease has begun to be paid attention to at home and abroad, and in some special applications, the lubricating grease is not required to have a long service life. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M173/02C10N30/06C10N50/10C10N30/10C10N30/04
Inventor 李朝宇何懿峰刘伟陈靖庄敏阳刘欣阳郑会
Owner CHINA PETROLEUM & CHEM CORP
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