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Polytetraurea lubricant grease

A technology of polytetraurea lubricating grease and lubricating grease, which is applied in lubricating compositions and the petroleum industry, etc., can solve the problems of polytetraurea’s poor oiling ability to low-viscosity bases, and achieve excellent anti-wear extreme pressure performance, volatile The effect of low resistance and excellent low temperature performance

Inactive Publication Date: 2016-07-20
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to overcome the deficiency that polytetraurea is poor to low-viscosity base oiling ability, provide a kind of polytetraurea lubricating grease that takes low-viscosity lubricating oil as base oil

Method used

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  • Polytetraurea lubricant grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix polyalphaolefin PAO4 and diisooctyl sebacate uniformly at a mass ratio of 1:1 to obtain base oil.

[0024] Add 1400g of base oil and 308g of TDI (2,4-toluene diisocyanate) into the reactor, heat to 75°C, after dissolving, add 2500g of base oil, 48.2g of ethylenediamine, 220g of octadecylamine and 80g of cyclohexanol under stirring. Hexylamine, continue to stir at 75°C for half an hour, then heat up to 140°C, keep warm for 1 hour, cool to 95°C, add 140g tricresyl phosphate (TCP) and 130g 2,6-di-tert-butyl-4-methylphenol (BHT ), stirred evenly, cooled to room temperature, and ground into fat.

Embodiment 2

[0026] The base oil is obtained by uniformly mixing pentaerythritol tetraisooctanoate and polyalphaolefin PAO4 at a mass ratio of 1:2.

[0027] Add 1200g base oil and 308g TDI (2,4-toluene diisocyanate) into the reaction kettle, heat to 70°C, after dissolving, add 2600g base oil, 48.2g ethylenediamine, 220g octadecylamine and 80g cyclic Hexylamine, continue to stir at 70°C for half an hour, then heat up to 170°C, keep warm for 30 minutes, cool to 110°C, add 140g tricresyl phosphate (TCP) and 120g N-phenyl α-naphthylamine, stir well, cool to room temperature, grind into fat.

Embodiment 3

[0029] Diisooctyl sebacate and polyalphaolefin PAO8 are uniformly mixed at a mass ratio of 1:1 to obtain a base oil.

[0030] Add 1000g base oil and 308g TDI (2,4-toluene diisocyanate) into the reaction kettle, heat to 75°C, after dissolving, add 3000g base oil, 86.8g o-phenylenediamine, 220g octadecylamine and 80g Cyclohexylamine, continue to stir at 75°C for half an hour, then heat up to 150°C, keep warm for 40 minutes, cool to 110°C, add 130g tricresyl phosphate (TCP) and 110g diisooctyl diphenylamine, stir well, cool to room temperature, Grind into fat.

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Abstract

The invention discloses polytetraurea lubricant grease. The polyurea lubricant grease disclosed by the invention is obtained through taking low-viscosity lubricating oil prepared from ester oil and poly alpha olefin as base oil, taking synthesized polytetraurea as a thickener and adding a friction modifier and an antioxidant. According to the ureido-based lubricant grease disclosed by the invention, the thickening effect is greatly increased without increasing the cost, the comprehensive performance is good, and the lubricant grease can be applied to machinery in the fields of electrical appliance industry, metallurgical industry, food industry, paper-making industry, automobile industry, airplane industry and the like.

Description

technical field [0001] The invention relates to a polytetraurea lubricating grease that can meet the functional requirements of high and low temperature, long life, extreme pressure resistance and high rotational speed. Background technique [0002] Urea-based lubrication is a kind of grease with urea group in the thickener molecule. It does not contain metal ions, which breaks through the lack of catalytic effect of metal ions in soap-based grease on base oil, and has a special crystal and colloid structure. , has a strong adhesion to the metal surface, resulting in a stable organic and oxide protective layer on the metal surface, preventing direct contact between metals, thereby reducing the friction coefficient and greatly reducing wear. Due to the unique lubrication mechanism of urea-based grease, it shows extraordinary performance in use: 1. Good extreme pressure and anti-wear properties, which can meet the lubrication requirements under high-load conditions; 2. High dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N50/10C10N30/06C10N30/12C10N30/10C10N30/08C10N40/02
Inventor 秦宝锋胡丽天李昊坤曾继华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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