Composite zirconium-based hexaurea lubrication grease and its preparation method

A hexapolyurea-based lubricating grease and lubricating grease technology are applied in the direction of lubricating compositions, petroleum industry, thickeners, etc., which can solve the problems of insufficient drop point and difficult availability of raw materials, etc., and achieve excellent extreme pressure and anti-wear properties, Excellent water resistance and long lubrication life

Active Publication Date: 2013-04-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent for preparing zirconium-based grease with zirconium salt as thickener is US4189387. The thickener only contains one kind of zirconium salt, which is prepared by reacting alkyl-substituted hypophosphorous acid or monocarboxylic acid with zirconium hydroxide. The resulting product has extreme pressure Good performance, but the dropping point is not high enough, and the thickener of the product with relatively good effect contains fluorine element, and the raw material is not easy to obtain

Method used

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  • Composite zirconium-based hexaurea lubrication grease and its preparation method
  • Composite zirconium-based hexaurea lubrication grease and its preparation method
  • Composite zirconium-based hexaurea lubrication grease and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Raw material components: ZrOCl 2 ·8H 2 O (56.2g); NaOH (14g); 12-hydroxystearic acid (50g); sebacic acid (18g); octadecylamine (8.4g); ethylenediamine (1.9g); MDI (11.7g); 500SN (400g).

[0040] 56.2gZrOCl 2 ·8H 2 O was dissolved in 280g of water, and 150g of aqueous solution containing 14g of NaOH was slowly added to the above ZrOCl 2 In the aqueous solution, stirring rapidly, a large amount of white precipitate appeared immediately, and the precipitate was obtained by filtration, and the precipitate was washed with a large amount of water for later use.

[0041] 150g of 500SN oil (viscosity 11mm at 100°C 2 / s), 50g of 12-hydroxystearic acid and 18g of sebacic acid were added to the normal pressure fat kettle, stirred, and became a homogeneous system after the temperature was raised to 90°C. Saponify the drained water for 2 hours and raise the temperature to 110°C;

[0042] Add 50g of 500SN base oil to another normal-pressure reactor with heating, stirring, circ...

Embodiment 2

[0047] Raw material components: ZrOCl 2 ·8H 2 O (62.4g); KOH (21.7g); Stearic acid (61.1g); Azelaic acid (16.2g); Octadecylamine (8.4g); Ethylenediamine (1.9g); MDI (11.7g); PAO 10 (1100 g); N-Phenyl-α-naphthylamine (1.2 g).

[0048] 62.4g ZrOCl 2 ·8H 2 O was dissolved in 300g of water, and 200g of aqueous solution containing 21.7g of KOH was slowly added to the above ZrOCl 2 In the aqueous solution, stirring rapidly, a large amount of white precipitate appeared immediately, and the precipitate was obtained by filtration, and the precipitate was washed with a large amount of water for later use.

[0049] 400g PAO 10 (viscosity 10mm at 100°C 2 / s), 61.1g of stearic acid and 16.2g of azelaic acid were added to the normal pressure fat kettle, stirred, and became a homogeneous system after the temperature was raised to 90°C. Saponify for 2 hours, then raise the temperature to 110°C; after catching up with the water, cool down to 90°C, add 7.8g MDI and stir rapidly for 4 minu...

Embodiment 3

[0052] Raw material components: ZrOCl 2 ·8H 2 O (122.1g); NH 3 ·H 2 O (26.5g); Stearic acid (107.8g); Sebacic acid (38.3g); Dodecylamine (6.6g); Ethylenediamine (2.1g); MDI (13.3g); PAO 6 (500g); p, p-Diisooctyldiphenylamine (2 g).

[0053] Composite zirconium-based hexapolyurea lubricating grease was prepared according to the method of Example 1, and the raw materials were all changed. The performance data of the finished lubricating grease obtained are shown in Table 1.

[0054] In the lubricating grease obtained in the present embodiment, based on the weight of the lubricating grease, the composition is: 3.1% of hexapolyurea; 70.4% of lubricating base oil; 18.0% of zirconyl stearate; 8.2% of zirconyl sebacate; - Diisooctyldiphenylamine 0.3%, wherein the molar ratio of sebacic acid to stearic acid is 0.5:1.

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Abstract

The invention provides a composite zirconium-based hexaurea lubrication grease and its preparation method. The lubrication grease comprises 1-59wt% of composite zirconium, 1-59wt% of hexaurea and 40-95wt% of lubrication base oil, wherein the composite zirconium comprises zirconyl higher fatty acid salt and zirconyl acid salt having a low molecular weight. The lubrication grease simultaneously comprises a composite zirconium thickening agent and a hexaurea compound. The lubrication grease has the advantages of excellent extreme-pressure wear resistance, long lubrication life, excellent water resistance, excellent colloid stability, high dropping point, excellent heat stability and the like.

Description

technical field [0001] The invention relates to a lubricant, in particular to a composite zirconium-based hexapolyurea grease and a preparation method thereof. Background technique [0002] As a transition metal element, zirconium belongs to group IVB and is located in the fifth period. Zirconium-containing compounds have excellent lubricating effects and are often used as lubricating additives. For example, CN101113382 and JP1973038444 use zirconium oxides as lubricant additives to improve wear resistance; WO2007143414 and US 20060063682 describe that zirconium tetrafluoride can be used as a friction reducing additive to become One of the components of lubricants; US 20060254823 found that lubricants containing 2-ethylhexanoic acid zirconium salt showed good heavy load and anti-wear properties; US 20050043189 found that fluorozirconates such as aluminum fluorozirconate can be used as oxide Inhibitors are used in lubricants; DE 102004021812 found that adding inorganic salts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M123/02C10M169/06C10M177/00C10N30/06C10N50/10
Inventor 何懿峰孙洪伟翟浩川段庆华刘中其刘磊姜靓陈政
Owner CHINA PETROLEUM & CHEM CORP
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