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Thickener for thickening high temperature lubricating grease

A technology of lubricating grease and thickener, applied in the direction of thickener, lubricating composition, petroleum industry, etc., can solve problems such as strength reduction, thermal deformation, lubrication accidents, etc.

Active Publication Date: 2017-09-12
ZHEJIANG RENHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the high-temperature lubricating grease used in the equipment volatilizes, dries up, and deposits carbon under high-temperature conditions, the equipment will be operated in a non-lubricated state, which will have a great impact on the equipment. The metal materials of the equipment will not only produce Thermal deformation, and its strength will also be reduced, shortening the service life of the equipment, and in severe cases, lubrication accidents will occur, causing the equipment to be stuck and stop.
[0003] The thickeners used in high temperature grease are mostly lithium complex, polyurea and silicon dioxide, and the increasingly high prices of lithium complex and polyurea have brought great pressure to companies using high temperature grease, and silicon dioxide Usually difficult to meet higher usage requirements

Method used

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  • Thickener for thickening high temperature lubricating grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 1050kg sodium bentonite and burn it at 350℃ for 1h.

[0028] Prepare 500 kg of sulfuric acid solution with a mass fraction of 17% and stir for 30 minutes at 95°C for acid activation treatment. Flocculation, slag removal and filtration.

[0029] Add a certain amount of water to wash the remaining acid at 6 times the mass of the material obtained, stir for 60 seconds, stand for 45 minutes, extract the supernatant, and repeatedly wash until the pH of the supernatant is 4~5. Filter and dry.

[0030] Put the dried bentonite into a ball mill and grind for 4 hours under the action of 40KHz ultrasonic wave to prepare ultrafine bentonite.

[0031] Press m Bentonite : M Covering agent =100:0.1 Add the obtained ultrafine bentonite to a 35% dimethyloctadecylbenzylammonium solution, and stir for 2h at 80°C.

[0032] The organically covered material is flocculated, filtered, transferred to 30°C for drying, ground and passed through a 200-mesh sieve to obtain a thickening agent for hig...

Embodiment 2

[0034] Take 1070kg sodium bentonite and burn it at 370℃ for 1h.

[0035] Prepare 500 kg of sulfuric acid solution with a mass fraction of 17.4%, and stir for 30 minutes at 96°C for acid activation treatment. Flocculation, slag removal and filtration.

[0036] Add a certain amount of water to wash the remaining acid at 6 times the mass of the material obtained, stir for 60 seconds, stand for 45 minutes, extract the supernatant, and repeatedly wash until the pH of the supernatant is 4~5. Filter and dry.

[0037] Put the dried bentonite into a ball mill and grind for 4 hours under the action of 40KHz ultrasonic wave to prepare ultrafine bentonite.

[0038] Press m Bentonite : M Covering agent = 100: 0.11 Add the obtained ultrafine bentonite to a 37% dimethyl octadecyl benzyl ammonium solution, and stir for 2 h at 80°C.

[0039] The organically covered material is flocculated, filtered, transferred to 30°C for drying, ground and passed through a 200-mesh sieve to obtain a thickening age...

Embodiment 3

[0041] Take 1090kg sodium bentonite and burn it at 390℃ for 1h.

[0042] Prepare 500 kg sulfuric acid solution with a mass fraction of 17.8%, and stir for 30 minutes at 97°C for acid activation treatment. Flocculation, slag removal and filtration.

[0043] Add a certain amount of water to wash the remaining acid at 6 times the mass of the material obtained, stir for 60 seconds, stand for 45 minutes, extract the supernatant, and repeatedly wash until the pH of the supernatant is 4~5. Filter and dry.

[0044] Put the dried bentonite into a ball mill and grind for 4 hours under the action of 40KHz ultrasonic wave to prepare ultrafine bentonite.

[0045] Press m Bentonite : M Covering agent = 100: 0.12 Add the obtained ultrafine bentonite to a 39% dimethyl octadecyl benzyl ammonium solution, and stir for 2 h at 80°C.

[0046] The organically covered material is flocculated, filtered, transferred to 30°C for drying, ground and passed through a 200-mesh sieve to obtain a thickening agent ...

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Abstract

The invention discloses a thickener for high-temperature lubricating grease thickening, which is prepared by the following method: burning sodium-based bentonite at 350-450°C for 1 hour; Acidify for 30 minutes under conditions, flocculate, remove slag, filter, wash residual acid, and dry; put the acidified bentonite in a ball mill and grind for 4 hours under the action of 40KHz ultrasonic waves; according to m bentonite: m covering agent = 100: 0.1~0.15 Prepare a dimethyloctadecylbenzylamine solution with a mass fraction of 35-45%, place the obtained superfine bentonite in the dimethyloctadecylbenzylamine solution, stir at 80°C for 2 hours, and filter , dried, milled, and passed through a 200-mesh sieve to obtain a thickener. The thickener of the invention can be applied to the preparation of high-temperature lubricating grease.

Description

Technical field [0001] The present invention belongs to the field of chemical industry, and particularly relates to a thickening agent. More specifically, the present invention is a thickening agent used for preparing high-temperature grease. Background technique [0002] High temperature lubricating grease is generally used in the use environment above 180℃, the highest can even reach about 800℃, and its use involves many industries. If the high temperature grease used in the equipment is volatilized, dried up, and carbon deposits under high temperature conditions, the equipment will be operated in an unlubricated state, which will have a greater impact on the equipment. The metal materials of the equipment will not only produce Thermal deformation, and its strength will also be reduced, reducing the service life of the equipment, and in severe cases, there will be a lubrication accident, causing the equipment to freeze and stop. [0003] The thickeners used in high-temperature g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M113/16
Inventor 张怀滨张有连俞铁明姜跃平姜健张怀辉
Owner ZHEJIANG RENHENG CHEM