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Lubricating grease composition

A grease composition and the technology of the composition, applied in the field of grease, can solve the problems of increased torque, insignificant improvement of appearance and anti-wear property, etc., and achieve the effect of good high and low temperature performance

Active Publication Date: 2009-10-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the improvement of its appearance and wear resistance is not obvious
Due to the use of partial homogeneity, the consistency of the grease is relatively soft, and it will thicken first and then become soft during the shearing process. The thickening of the grease during use will increase the torque, which is unfavorable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Set the viscosity at 100°C to 30mm 2 Add 50kg of refined mineral oil per s, 5.6kg of stearic acid and 2.4kg of benzoic acid into the fat-making kettle, stir and heat up to 80°C, add 4.82kg of triisopropoxy aluminum, and react for 30 minutes in the range of 90-110°C , add 0.5kg of water to react for 10 minutes, raise the temperature to 190°C, keep it for 30 minutes, add the remaining 42kg of refined mineral oil, cool down to 100°C, and obtain about 100kg of composite aluminum-based grease (calculation principle: the weight of the product is regarded as equal to the base oil and The sum of the weights of the two acids. Because the aluminum alcohol reacts to release isopropanol, the remaining aluminum accounts for a small proportion, and the high temperature of the base oil will cause evaporation loss), and the material is transferred to the blending kettle.

[0020] Set the viscosity at 100°C to 30mm 2 Add 20kg of refined mineral oil per s, 40kg of T106 overbased calcium...

Embodiment 2

[0023] Set the viscosity at 100°C to 10mm 2 Add 56kg of refined mineral oil per s, 2.8kg of stearic acid and 1.2kg of benzoic acid into the fat-making kettle, stir and heat up to 80°C, add 2.4kg of triisopropoxy aluminum, and react for 30 minutes in the range of 90-110°C , add 0.25kg of water to react for 10 minutes, raise the temperature to 190°C, keep it for 30 minutes, add the remaining 50kg of refined mineral oil, cool down to 100°C to obtain about 110kg of composite aluminum-based grease, and transfer the material to a blending kettle.

[0024] Set the viscosity at 100°C to 30mm 2 Add 4kg of refined mineral oil per s, 10kg of T106 overbased calcium sulfonate, 0.8kg of water and 0.3kg of ethylene glycol monomethyl ether into the kettle, react at 80-95°C, wait for the material to thicken, use Fourier transform infrared Spectrometer test, at 881-886cm -1 There is an absorption peak of calcite calcium carbonate, add remaining 30kg of base oil, 5kg of lauryl hydroxystearic a...

Embodiment 3

[0027] Set the viscosity at 100°C to 20mm 2 Add 57kg of refined mineral oil per s, 9.1kg of stearic acid and 3.9kg of benzoic acid into the fat-making kettle, stir and heat up to 80°C, add 7.84kg of triisopropoxy aluminum, and react for 30 minutes in the range of 90-110°C , add 0.8kg of water to react for 10 minutes, raise the temperature to 190°C, keep it for 30 minutes, add the remaining 30kg of refined mineral oil, cool down to 100°C to obtain about 100kg of composite aluminum-based grease, and transfer the material to a blending kettle.

[0028] Prepare 500kg of lubricating grease according to the composition ratio and process of preparing composite calcium sulfonate base grease in Example 1, and transfer it to the blending kettle.

[0029] In the blending kettle, the composite aluminum-based grease and the composite calcium sulfonate-based grease are mixed, stirred and circulated evenly. The physical and chemical properties of the obtained product were tested, and the re...

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PUM

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Abstract

The lubricating grease composition provided by the invention is formed by mixing composite aluminum-based grease and composite calcium sulfonate-based grease, and the weight ratio is 1:0.2-7.0. Said composite aluminum-based grease is composed of composite aluminum soap thickener and base oil generated by the reaction of benzoic acid, fatty acid and aluminum alkoxide, wherein the composite aluminum soap thickener accounts for 3% to 15% of the weight of the composite aluminum-based grease. %, and the rest is base oil. Said complex calcium sulfonate base grease is composed of base oil, non-Newtonian overalkaline petroleum calcium sulfonate and complex calcium thickener. Based on the weight of the compound calcium sulfonate base grease as 100%, the weight of the non-Newtonian overalkaline petroleum calcium sulfonate is 20-50%, the weight of the compound calcium thickener is 2-10%, and the rest is base oil. The lubricating grease composition of the present invention not only has good high and low temperature performance, water resistance and pumpability, but also has good wear resistance, mechanical stability, rust resistance and good appearance, and can meet the lubrication requirements of ships.

Description

technical field [0001] This invention relates to greases. Background technique [0002] The lubricating grease used for water equipment such as ships and submarines requires good high and low temperature resistance, water resistance, pumpability, rust resistance, mechanical stability and wear resistance, and high-viscosity refined mineral oil thickened with complex aluminum soap is selected Grease is suitable. Refined high-viscosity mineral oil can meet the requirements of high temperature, low temperature and thicker oil film between friction pairs of lubricating grease; complex aluminum soap can meet the high temperature, water resistance and pumpability requirements of lubricating grease. However, this kind of grease has poor wear resistance, mechanical stability and rust resistance, and its appearance is jelly-like. [0003] Composite calcium sulfonate-based grease has good high temperature resistance, mechanical stability, extreme pressure anti-wear and anti-rust prop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M121/04C10M121/02
Inventor 李茂森刘显秋王磊方春梅
Owner CHINA PETROLEUM & CHEM CORP