Calcium-carbonate-containing high-performance composite calcium-sulfonate-based lubricating grease and preparation method thereof

A technology for compound calcium sulfonate and synthesis of calcium sulfonate, which is applied in lubricating compositions, petroleum industry, etc., can solve the problem that compound calcium sulfonate-based grease cannot have anti-aging hardening and high temperature resistance at the same time, and achieve formula components Less, improve high temperature performance, good extreme pressure effect

Active Publication Date: 2019-05-17
广西碳酸钙产业化工程院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to propose a calcium carbonate-containing high-performance composite calcium sulfonate-based lubricating grease and a preparation method thereof, so as to solve the problem that the composite calcium sulfonate-based lubricating grease in the above-mentioned prior art cannot simultaneously have properties such as aging resistance, hardening resistance and high temperature resistance. technical issues

Method used

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  • Calcium-carbonate-containing high-performance composite calcium-sulfonate-based lubricating grease and preparation method thereof
  • Calcium-carbonate-containing high-performance composite calcium-sulfonate-based lubricating grease and preparation method thereof
  • Calcium-carbonate-containing high-performance composite calcium-sulfonate-based lubricating grease and preparation method thereof

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Embodiment 1

[0043] A method for preparing calcium carbonate-containing high-performance composite calcium sulfonate-based lubricating grease, comprising the following steps:

[0044] S1: At room temperature, weigh 1000g of 350mgKOH / g calcium sulfonate with high basic value and 1300g of 150BS base oil, put them into the reaction kettle and stir and mix, keep stirring and raise the temperature to 95°C to obtain the mixture A;

[0045] S2: Add 10g of dodecyl hydroxystearic acid, 12g of dodecylbenzene sulfonic acid, and 100g of water to the mixture A in turn for mixing. After mixing evenly, quickly add 20g of acetic acid, keep the system at 95°C and continue stirring for 1.5h to obtain a viscous Mixture B;

[0046] S3: Add 150g of modified nano-calcium carbonate to the viscous mixture B, keep stirring at 95°C for 15 minutes, then raise the temperature to 180°C and continue stirring for 20 minutes, and carry out dehydration reaction. After dehydration, add 150g of 150BS base oil and cool down ...

Embodiment 2

[0060] A method for preparing calcium carbonate-containing high-performance composite calcium sulfonate-based lubricating grease, comprising the following steps:

[0061] S1: At room temperature, weigh 1000g of 350mgKOH / g calcium sulfonate with high alkalinity and 1400g of 150BS base oil into the reactor for stirring and mixing, keep stirring and raise the temperature to 95°C to obtain the mixture A;

[0062] S2: Add 15g of dodecyl hydroxystearic acid, 15g of dodecylbenzene sulfonic acid, and 120g of water to the mixture A in order to mix. After mixing evenly, quickly add 28g of acetic acid, keep the system at 95°C and continue stirring for 1.5h to obtain a viscous Mixture B;

[0063] S3: Add 200g of modified nano-calcium carbonate to the viscous mixture B, keep stirring at 95°C for 15 minutes, then raise the temperature to 180°C and continue stirring for 20 minutes, and carry out dehydration reaction. After dehydration, add 220g of 150BS base oil and cool down to 100°C. Afte...

Embodiment 3

[0077] A method for preparing calcium carbonate-containing high-performance composite calcium sulfonate-based lubricating grease, comprising the following steps:

[0078] S1: At room temperature, weigh 1000g of 450mgKOH / g calcium sulfonate with high alkalinity and 1100g of 150BS base oil and put them into the reaction kettle for stirring and mixing, continue stirring and raise the temperature to 95°C to obtain the mixture A;

[0079] S2: Add 10g of dodecyl hydroxystearic acid, 11g of dodecylbenzene sulfonic acid, and 100g of water to the mixture A in order to mix. After mixing evenly, quickly add 26g of acetic acid, keep the system at 95°C and continue stirring for 1.5h to obtain a viscous Mixture B;

[0080] S3: Add 180g of modified nano-calcium carbonate to the viscous mixture B, keep stirring at 95°C for 15 minutes, then raise the temperature to 180°C and continue stirring for 20 minutes, and carry out dehydration reaction. After dehydration, add 180g of 150BS base oil and ...

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Abstract

The invention discloses calcium-carbonate-containing high-performance composite calcium-sulfonate-based lubricating grease and a preparation method thereof, and belongs to the technical field of lubricant preparation. The calcium-carbonate-containing high-performance composite calcium-sulfonate-based lubricating grease is prepared from the following raw materials in parts by weight: 100 parts of calcium sulfonate with a high alkali value, 120-170 parts of base oil, 1-1.5 parts of alkyl benzene sulfonic acid, 0.5-2 parts of fatty acid, 1-10 parts of acetic acid, 5-15 parts of water and 15-25 parts of modified nano calcium carbonate, wherein the modified nano calcium carbonate has the advantages such as a good cleaning effect, resistance to low-temperature corrosion and resistance to abrasion and friction during serving as an additive of the lubricating grease. The composite calcium-sulfonate-based lubricating grease prepared through the method has good extreme pressure, abrasion resistance, high and low temperature properties and colloidal stability, and further has excellent performance of hardening resistance, high temperature resistance and avoidance of oil throwing.

Description

technical field [0001] The invention relates to the technical field of lubricant preparation, in particular to a calcium carbonate-containing high-performance composite calcium sulfonate-based lubricating grease and a preparation method thereof. Background technique [0002] As an independent industrial part of lubricants, grease is widely used in industrial machinery, agricultural machinery, transportation industry, Electronic information industry and other fields. Grease is mainly made by thickening base oil with thickener and adding additives. According to the type of thickener used, it can be divided into metal soap-based grease, organic grease, hydrocarbon-based grease and inorganic grease. Among metal soap base greases, complex calcium sulfonate base greases are the most widely used. [0003] Calcium sulfonate-based grease combines the performance advantages of lithium-complex grease, aluminum-composite grease and calcium-complex grease, and is known for its excellen...

Claims

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Application Information

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IPC IPC(8): C10M169/04C08F220/18C08F216/16C08F222/06C10N50/10C10N30/08C10N30/06
Inventor 覃玲意童张法周文英钟玲萍蒙杨平陈珍明苏耀恩
Owner 广西碳酸钙产业化工程院有限公司
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