Thickening agent intercalated hydrotalcite, preparation method and application of thickening agent intercalated hydrotalcite as lubricating grease thickening agent

A technology of hydrotalcite and thickener, applied in the direction of hydrotalcite, thickener, lubricating composition, etc., can solve the problems of poor dispersion of hydrotalcite and achieve good sealing performance

Pending Publication Date: 2022-07-29
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of thickening agent intercalation hydrotalcite and its preparation method and the application as lubricating grease thickening agent, to solve the problems existing in the above-mentioned prior art, the method of the present invention can thicken lubricating oil into lubricating grease The introduction of lauryl hydroxystearic acid or stearic acid can change hydrotalcite from hydrophilic to lipophilic, improve the shortcoming of poor dispersion of hydrotalcite in the oil phase, and can exert the two-dimensional effect of hydrotalcite to block air Oxygen, water vapor and other gases that have an oxidizing effect on metal devices contact the metal devices to achieve better sealing performance

Method used

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  • Thickening agent intercalated hydrotalcite, preparation method and application of thickening agent intercalated hydrotalcite as lubricating grease thickening agent
  • Thickening agent intercalated hydrotalcite, preparation method and application of thickening agent intercalated hydrotalcite as lubricating grease thickening agent
  • Thickening agent intercalated hydrotalcite, preparation method and application of thickening agent intercalated hydrotalcite as lubricating grease thickening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step a: 20.512g Mg(NO 3 ) 2 ·6H 2 O and 15g Al (NO 3 ) 3 ·9H 2 Dissolve O in 200mL to remove CO 2 mixed salt solution in deionized water;

[0035] Step b: Dissolve 15g NaOH in 300mL to remove CO 2 made into NaOH solution in deionized water;

[0036] Step c: put 15g CH 3 (CH 2 )5 CH(OH)(CH 2 ) 10 COOH was dissolved in 400mL to remove CO 2 NaOH solution, heating until the solution is clear;

[0037] Step d: drop the solution obtained in step a and b into the solution obtained in step c at the same time, and stir vigorously, the pH of the solution is kept at 10, until the titration of the salt solution is completed, and crystallize at 90 ° C for 24 hours, the whole reaction process. use N 2 Protect. The obtained sample will be boiled to remove CO 2 washed with deionized water to neutrality, and washed three times with acetone, dried under vacuum, ground into powder and sieved through a 200-mesh sieve.

[0038] Step e: take 5g of the hydrotalcite powder obt...

Embodiment 2

[0047] Step a: 20.512g Mg(NO 3 ) 2 ·6H 2 O and 15g Al (NO 3 ) 3 ·9H 2 Dissolve O in 200mL to remove CO 2 mixed salt solution in deionized water;

[0048] Step b: Dissolve 15g NaOH in 300mL to remove CO 2 made into NaOH solution in deionized water;

[0049] Step c: put 15g CH 3 (CH 2 ) 16 COOH was dissolved in 400mL to remove CO 2 NaOH solution, heating until the solution is clear;

[0050] Step d: drop the solution obtained in step a and b into the solution obtained in step c at the same time, and stir vigorously, the pH of the solution is kept at 10, until the titration of the salt solution is completed, and crystallize at 90 ° C for 24 hours, the whole reaction process. use N 2 Protect. The obtained sample will be boiled to remove CO 2 washed with deionized water to neutrality, and washed three times with acetone, dried under vacuum, ground into powder and sieved through a 200-mesh sieve.

[0051] Step e: Mix 5 g of the hydrotalcite powder obtained in step d ...

Embodiment 3

[0059] Step a: 20.512g Mg(NO 3 ) 2 ·6H 2 O and 15g Al (NO 3 ) 3 ·9H 2 Dissolve O in 200mL to remove CO 2 mixed salt solution in deionized water;

[0060] Step b: Dissolve 15g NaOH in 300mL to remove CO 2 made into NaOH solution in deionized water;

[0061] Step c: put 15g CH 3 (CH 2 ) 5 CH(OH)(CH 2 ) 10 COOH was dissolved in 400mL to remove CO 2 NaOH solution, heating until the solution is clear;

[0062] Step d: drop the solution obtained in step a and b into the solution obtained in step c at the same time, and stir vigorously, the pH of the solution is kept at 10, until the titration of the salt solution is completed, and crystallize at 90 ° C for 24 hours, the whole reaction process. use N 2 Protect. The obtained sample will be boiled to remove CO 2 washed with deionized water to neutrality, and washed three times with acetone, dried under vacuum, ground into powder and sieved through a 200-mesh sieve.

[0063] Step e: Mix 9 g of the hydrotalcite powder o...

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Abstract

The invention discloses thickening agent intercalated hydrotalcite, a preparation method of the thickening agent intercalated hydrotalcite and application of the thickening agent intercalated hydrotalcite as a lubricating grease thickening agent, and belongs to the technical field of sealing lubricating grease preparation. Then a sodium hydroxide solution and different inorganic salt solutions M1 and M2 are dropwise added into a 12-hydroxystearic acid or stearic acid solution at the same time, intercalated hydrotalcite is obtained through crystallization, and the intercalated hydrotalcite can thicken the lubricating oil into lubricating grease in the presence of a saponifying agent; by introducing 12-hydroxystearic acid or stearic acid, the oxidation resistance and wear resistance of the hydrotalcite material are exerted while the thickening effect is achieved, the lipophilicity of the hydrotalcite material can be improved, the hydrotalcite can be changed from hydrophilicity to lipophilicity, and the defect that the dispersity of hydrotalcite in an oil phase is poor is overcome; and the two-dimensional effect of the hydrotalcite can be exerted to prevent oxygen, water vapor and other gases which have an oxidation effect on a metal device from contacting the metal device, so that a relatively good sealing performance is achieved.

Description

technical field [0001] The invention relates to the technical field of preparation of sealing grease, in particular to a thickener intercalated hydrotalcite, a preparation method and an application as a grease thickener. Background technique [0002] The function of the grease thickener is to thicken the liquid lubricating oil to the semi-solid grease. Thickener, also called thickener, can account for up to 30% of grease components, and is a very important component of grease. In different greases such as sealing grease, protective grease, anti-friction and anti-wear grease, wide temperature aviation grease and high-load grease, etc., the addition of thickeners is the key to affecting their performance. At present, more and more special operation machinery is emerging, which constantly puts forward new requirements for the thickener in lubricating grease, and has great scientific research value. And with the deepening of the concept of environmental protection and energy s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M123/02C10M169/02C01F7/785C10N50/10C10N40/34C10N30/10C10N30/06C10N30/12C10N30/04
CPCC10M123/02C10M169/02C01F7/785C10M2201/145C10M2201/0626C10M2207/1265C10M2207/1285C10N2050/10C10N2040/34C10N2040/48C10N2030/10C10N2030/06C10N2030/12C10N2030/04C01P2002/72C01P2004/03
Inventor 韩景宾靳祖超李勇刘自茹张强
Owner BEIJING UNIV OF CHEM TECH
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