Composite barium-based lubricating grease composition and preparation method thereof

A kind of grease, barium-based technology, applied in the field of compound barium-based grease composition and preparation thereof, can solve the problems of related research without graphene application, and achieve the effects of excellent thermal stability, high dropping point, and enhanced ability

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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  • Composite barium-based lubricating grease composition and preparation method thereof
  • Composite barium-based lubricating grease composition and preparation method thereof
  • Composite barium-based lubricating grease composition and preparation method thereof

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preparation example Construction

[0028] According to the second aspect of the present invention, the present invention provides a preparation method of composite barium-based grease, the method comprising: mixing graphene, composite barium-based thickener and part of the base oil uniformly, at a constant temperature of 170-220°C Refining, cooling, adding the remaining base oil and adding necessary additives to get the finished product.

[0029] Wherein, the amount of graphene, composite barium-based thickener and base oil makes the resulting composite barium-based grease, based on grease weight, include the following components: 65-95% lubricating base oil, 5-30% Composite barium-based thickener, 0.2-15% graphene.

[0030] Preferably, the amount of graphene, composite barium-based thickener and base oil makes the resulting composite barium-based grease, based on grease weight, include the following components: 70-93% lubricating base oil, 8-25% % composite barium-based thickener, 1-10% graphene.

[0031] Ac...

Embodiment 1

[0047] Preparation of graphene oxide:

[0048] 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.

[0049] Preparation of graphene:

[0050] Add 0.1g of the graphene oxide prepared above to 100ml of water for ultr...

Embodiment 2

[0056] The preparation of graphene oxide is the same as in Example 1.

[0057] Preparation of graphene:

[0058] 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.

[0059] Preparation of complex barium grease:

[0060] Raw material components: graphene 30g; 150BS base oil 200g (viscosity at 100°C is 31mm 2 / s); 48.9g of barium hydroxide octahydrate; 21g of sebacic acid; 30.8g of 12-hydroxystearic acid; 1g of antioxidant diisooctyldiphenylamine.

[0061] Add 100 grams of base oil, 30 grams of graphene, 30.8 grams of 12-hydroxystearic acid and 21 grams of sebacic acid into the fat-making kettle, heat and stir, when the temperature rises to 105 ° C, sl...

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Abstract

The invention discloses a composite barium-based lubricating grease composition and a preparation method thereof. By taking the weight of the lubricating grease as a benchmark, the composite barium-based lubricating grease composition comprises the following components: 65-95% of lubricating base oil, 5-30% of a composite barium-based thickening agent and 0.2-15% of graphene. The composite barium-based lubricating grease has excellent high temperature resistance, water resistance, adhesion, colloidal stability, extreme pressure antiwear property, anti-corrosion property, salt and spray resistance and the like and long lubricating life.

Description

technical field [0001] The invention relates to a lubricant material, in particular to a composite barium-based lubricating grease composition and a preparation method thereof. Background technique [0002] Composite barium-based grease is made of compound barium soap thickened and refined medium-viscosity mineral oil produced by the reaction of two or more acids and barium hydroxide. It has good water resistance, high dropping point and certain protection performance. Barium-based lubricating grease-ZB10-2, which is made from barium stearate-thickened low-freezing-point synthetic transformer oil fraction, has strong water resistance and pressure resistance, and has good adhesion and protection to metal surfaces , At the same time, it is almost insoluble in organic solvents such as gasoline and alcohol, and is an excellent waterproof, solvent-resistant, protective and sealing material. [0003] Composite barium base lubricating grease also has a lot of reports both at home...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/02C10M123/06C10M121/04C10M177/00C10N30/06C10N30/08C10N50/10
Inventor 么佳耀郑会孙洪伟何懿峰段庆华张建荣陈政刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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