Complex aluminum-base lubricating grease and preparation method thereof

A technology based on lubricating grease and aluminum composite, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problems of related research without graphene application, achieve excellent thermal stability, shorten saponification time, and good mechanical stability.

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nanomaterials are also gradually used in the application of grease, such as nano-silica, nano-diamond, nano-titanium dioxide, nano-zinc oxide, etc., but there is still no research on the application of graphene in grease

Method used

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  • Complex aluminum-base lubricating grease and preparation method thereof
  • Complex aluminum-base lubricating grease and preparation method thereof

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preparation example Construction

[0030] According to the second aspect of the present invention, the present invention provides a preparation method of composite aluminum-based grease, the method comprising: uniformly mixing graphene, composite aluminum-based thickener and part of the base oil, at a constant temperature of 200-220°C Refining, cooling, adding the remaining base oil and adding necessary additives to get the finished product.

[0031] Wherein, the amount of graphene, composite aluminum-based thickener, and base oil makes the resulting composite aluminum-based grease, based on the weight of the grease, include the following components: 65-95% lubricating base oil, 5-30% Composite aluminum-based thickener, 0.2-15% graphene.

[0032] Preferably, the amount of graphene, composite aluminum-based thickener, and base oil makes the resulting composite aluminum-based grease, based on grease weight, include the following components: 70-90% lubricating base oil, 8-25 % composite aluminum-based thickener, ...

Embodiment 1

[0049] Preparation of graphene oxide:

[0050] Mix 1g of graphite flakes, 0.5g of sodium nitrate and 23ml of concentrated sulfuric acid in an ice bath, slowly add 3g of potassium permanganate while stirring, keep the temperature below 10°C and stir for 1h, then stir the mixture at 35°C for 0.5h, then add Dilute with 50ml of deionized water, a lot of heat is released during the process, keep the temperature below 100°C in an ice bath, after adding 50ml of water, stir the mixture for 0.5h, then add 200ml of deionized water for further dilution. Potassium permanganate was then reduced by adding 10 ml of a 30% by weight aqueous hydrogen peroxide solution. Finally, the mixture was washed and filtered with 5% hydrochloric acid (400ml) to remove metal ions. Then, the acid was removed with 0.5 L of deionized water, and dried at 60 °C for 24 h to obtain graphene oxide.

[0051] Preparation of graphene:

[0052] Add 0.1g of the graphene oxide prepared above to 100ml of water for ultr...

Embodiment 2

[0058] The preparation of graphene oxide is the same as in Example 1.

[0059] Preparation of graphene:

[0060] Add 0.1 g of the prepared graphene oxide into 100 ml of water for ultrasonic dispersion (ultrasonic frequency 35 kHz) for 30 min, then add 5 ml of hydrazine hydrate (mass concentration: 85%), and react in an oil bath at 100 ° C for 24 h. The powder obtained after water washing, suction filtration and drying is graphene, and the properties of graphene are shown in Table 2 below.

[0061] Preparation of composite aluminum-based grease:

[0062] Raw material components: graphene 58.8g; 150BS base oil 420g (viscosity of 30mm at 100°C 2 / s); 38.41g of 12-hydroxystearic acid; 42.47g of terephthalic acid; 39.56g of aluminum isopropoxide trimer; 5g of water; 1.2g of diisooctyldiphenylamine.

[0063] Add 58.8 grams of graphene, 210 grams of base oil, 38.41 grams of 12-hydroxystearic acid and 39.56 grams of aluminum isopropoxide trimer into the fat-making kettle, stir and ...

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Abstract

The invention discloses complex aluminum-base lubricating grease and a preparation method thereof. On a lubricating grease weight basis, the complex aluminum-base lubricating grease comprises the following components: 65-95 percent of lubricating base oil, 5-30 percent of complex aluminum-base thickening agent and 0.2-15 percent of graphene. The complex aluminum-base lubricating grease provided by the invention has excellent properties such as high-temperature resistance, water resistance, adhesivity, colloid stability, extreme pressure wearability, lubricating life, corrosion resistance and salt fog resistance.

Description

technical field [0001] The invention relates to a lubricant material, in particular to a composite aluminum-based lubricating grease and a preparation method thereof. Background technique [0002] The research on composite aluminum-based grease began in the 1950s, but it was not paid attention to until the 1970s. It is mainly used in the centralized grease supply system of steel plants, and its output is second only to lithium-complex grease in complex soap-based grease two. Aluminum complex grease is a high temperature multi-effect grease with high dropping point and good multi-effect properties, such as good colloidal stability, oxidation stability, mechanical stability, water resistance, especially good pumping performance, suitable for centralized systems. [0003] CN102021067A prepared a barium aluminum-based grease suitable for ships; CN102021068A prepared an aluminum-sodium-based grease suitable for ships; CN1900244A introduced a composite aluminum-based grease prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00C10N50/10C10N30/10C10N30/02
Inventor 么佳耀郑会孙洪伟何懿峰段庆华张建荣刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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