Composite calcium-sulfonate-based lubricating grease composition and preparation method thereof

A technology of compound calcium sulfonate-based grease and composition, applied in the field of grease, can solve problems such as short service life, and achieve the effects of prolonging retention, good high temperature resistance and ensuring reliability

Inactive Publication Date: 2012-05-02
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the development of industrial technology, the requirements for lubricating grease are getting higher and higher, especially for some iron and steel industry equipment, bearings and gears generally have a short service life in harsh environments, but most of these parts are steel enterprise equipment Once the cor

Method used

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  • Composite calcium-sulfonate-based lubricating grease composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] 70g (70.0%) of the highly alkaline calcium sulfonate detergent with a base value of 320mgKOH / g is dropped into the reaction kettle, and 10g (10%) of methanol is added to carry out the production of calcite structure calcium carbonate, stir rapidly, and heat up to 80-100 ℃, constant temperature for 10 to 40 minutes, until the system material gradually thickens, and the temperature is 90 to 100 ℃, gradually add calcium hydroxide powder 1.5g (1.5%), stearic acid 2g (2%), boric acid powder 0.1 g (0.1%) and 1 g (1%) of dodecanedibasic acid, react at constant temperature for 30 minutes, then gradually increase the temperature, keep the temperature at 130-140°C for 1 hour, gradually increase the temperature to 220°C, cool naturally, and adjust the consistency with mineral oil , the addition amount is 15.4g (15.4%), and finally the finished lubricating grease is 90g (methanol is volatilized and recovered during production), and the working penetration is 200 / 25°C (see Table 1 fo...

Embodiment 2

[0029] Put 200g (20%) of a highly alkaline calcium sulfonate detergent with a base value of 320mgKOH / g into the reactor, add 1g (1%) of methanol to produce calcite-structured calcium carbonate, stir rapidly, and heat up to 80-100 ℃, constant temperature for 10-40 minutes, until the system material gradually thickens, add 200g (20%) of mineral oil, and gradually add 15g (1.5%) of calcium hydroxide powder and 1g of stearic acid to the system at a temperature of 90-100°C (0.1%), boric acid powder 10g (1%) and dodecanedibasic acid 100g (10%), after constant temperature reaction for 30 minutes, gradually heat up, keep the temperature at 130~140°C for 1h, gradually slowly heat up to 220°C and then naturally Cool, adjust the consistency with mineral oil, the addition is 473g (47.3%), the final grease weight is 999g (methanol is completely volatilized and recovered during production), and the working penetration is 285 / 25°C. (Experimental results are shown in Table 1)

Embodiment 3

[0031] Put 200g (20%) of an overbased calcium sulfonate detergent with a base value of 350mgKOH / g into the reactor, add 1g (0.1%) of methanol to produce calcite-structured calcium carbonate, stir rapidly, and heat up to 80-100°C , constant temperature for 10-40 minutes, until the system material gradually thickens, add 200g (20%) of mineral oil, and gradually add calcium hydroxide powder 1g (0.1%), stearic acid 1g ( 0.1%), boric acid powder 1g (0.1%) and tetradecanedibasic acid 10g (1%), after constant temperature reaction for 30 minutes, gradually increase the temperature, keep the temperature at 130-140°C for 1 hour, gradually increase the temperature to 220°C and then cool naturally , adjust the consistency with mineral oil, the addition amount is 586g (58.6%), the final grease weight is 999g (methanol is completely volatilized and recovered during production), and the working penetration is 292 / 25°C. (Experimental results are shown in Table 1)

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Abstract

The invention discloses a composite calcium-sulfonate-based lubricating grease composition and a preparation method thereof. The preparation method comprises: filling high-alkalinity calcium sulfonate serving as a cleaning agent and methanol into a reaction kettle, heating to 80 to 100 DEG C, and after the mixed material is thick, adding calcium hydroxide powder, boric acid powder, C12 to C16 dicarboxylic acid and stearic acid at 90 to 100 DEG C to perform a saponification for 30 minutes; after saponification is finished, raising the temperature, keeping the temperature constant at 130 to 140 DEG C for 1 hour, slowly raising temperature to 220 to 225 DEG C, keeping the temperature constant for 5 to 10 minutes, and performing thickness regulation and homogenization treatment by using 4 to 78.6 percent base oil, wherein keeping the homogenization temperature between 100 and 120 DEG C; and when the thickness is proper, reducing temperature to 80 to 90 DEG C, filling when the temperature drops to 40 to 60 DEG C, and obtaining the finished composite calcium-sulfonate-based lubricating grease composition. The lubricating grease provided by the invention has high high-temperature resistance; leakage experiments carried out in accordance with ASTM D4290 and ASTM D1263 (SH/T0326 industrial standards) prove that the leakage range of the lubricating grease is within 5 to 10; and the retaining property of the lubricating grease in friction pair can be improved, and the operation reliability of the equipment can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, and in particular relates to an improved compound calcium sulfonate-based lubricating grease composition and a preparation method. Background technique [0002] With the development of industrial technology, the requirements for lubricating grease are getting higher and higher, especially for some iron and steel industry equipment, bearings and gears generally have a short service life in harsh environments, but most of these parts are steel enterprise equipment Once the core components are damaged, it will have a great impact on the quality of the products produced. Therefore, how to play a greater role in these core components, prolong the service life, and ensure the overall performance of the running parts is the direction pursued by the machinery and equipment industry. [0003] Grease usually contains two kinds of organic thickeners and inorganic thickeners. Most of the thickener...

Claims

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Application Information

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IPC IPC(8): C10M123/02C10M177/00C10N50/10
Inventor 赵伟吴宝杰田宁宁李纪委
Owner CHINA PETROLEUM & CHEM CORP
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