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Layered zirconium phosphate and molybdenum disulfide compound extreme pressure grease and preparation method thereof

A molybdenum disulfide, extreme pressure lubrication technology, used in lubricating compositions, petroleum industry, additives, etc., can solve the problems of poor bearing capacity and anti-wear performance of base grease, and achieve excellent anti-wear performance, long extreme pressure performance, The effect of improving the bearing capacity and wear resistance

Inactive Publication Date: 2017-11-24
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Molybdenum disulfide is a traditional solid lubricant additive, but studies have found that adding molybdenum disulfide alone to lithium-based greases is not as good as layered zirconium phosphate materials in terms of improving the bearing capacity and anti-wear properties of the base grease [Zhang, X., Xu, H., Zuo, Z., Lin, Z., Ferdov, S., Dong, J. Hydrothermal synthesis of copper zirconium phosphate hydrate [Cu(OH) 2 Zr(HPO 4 )2.2H 2 O] and an investigation of its lubrication properties increase. ACS Appl. Mater. Interfaces [J]. 2013,5(16), 7989-7994]

Method used

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  • Layered zirconium phosphate and molybdenum disulfide compound extreme pressure grease and preparation method thereof
  • Layered zirconium phosphate and molybdenum disulfide compound extreme pressure grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of α-layered zirconium phosphate material: 0.294 g (7.0 mmol) sodium fluoride (NaF, Aladdin reagent (Shanghai) Co., Ltd.), 22.5 g (68.4 mmol) zirconium oxychloride octahydrate (ZrOCl 2 •8H 2 O, Sinopharm Chemical Reagent Co., Ltd.) and 24.95 mL of distilled water were added to a 150 mL polytetrafluoroethylene-lined reaction kettle in sequence, and after fully stirring to completely dissolve the solid reactants, 15.81 g (161.3 mmol) of phosphoric acid (H 3 PO 4 , Aladdin Reagent (Shanghai) Co., Ltd.) after stirring evenly, put the reaction kettle into 180 o C oven was reacted for 36 h. After the reaction, the solid product was filtered and washed with distilled water to neutrality, and the α-ZrP sample was obtained after natural air drying.

[0028] α-ZrP and MoS 2 The preparation method of the mixed powder: 8.0 g α-ZrP and 4.0 g molybdenum disulfide (MoS 2 , Aladdin Reagent (Shanghai) Co., Ltd.) were mixed in an agate jar, and 12.0 g of petrol...

Embodiment 2

[0033] α-ZrP preparation method is the same as embodiment 1;

[0034] The base lithium grease is the same as in Example 1, the difference is that 150 g of naphthenic mineral oil (viscosity at 100°C is 10.4mm 2 / s) was replaced with 150 g of polyalphaolefin PAO8 base lubricating oil (viscosity of 8.1 mm at 100 °C 2 / s);

[0035] α-ZrP and MoS 2 The preparation method of the mixed powder is the same as in Example 1, except that 8.0 g α-ZrP and 4.0 g molybdenum disulfide (MoS 2 , Aladdin Reagent (Shanghai) Co., Ltd.) was replaced with 10.0 g α-ZrP and 4.0 g molybdenum disulfide (MoS 2 , Aladdin Reagent (Shanghai) Co., Ltd.), adding 14.0 g petroleum ether (boiling range 60 - 90 o C, Tianjin Kemiou Reagent Co., Ltd.);

[0036] Add 3.0 g α-ZrP and MoS directly to 94.0 g base lithium grease 2 Mixed powder, 2.0 g extreme pressure agent (a mixture of 1.0 g thiophosphoric acid complex ester amine salt and 1.0 g sulfurized isobutylene, Shenyang Zhongda Jiusheng Chemical Technology ...

Embodiment 3

[0039] α-ZrP preparation method is the same as embodiment 1;

[0040] The base lithium grease is the same as in Example 1, the difference is that 150 g of naphthenic mineral oil (viscosity at 100°C is 10.4mm 2 / s) replaced with 150 g polyol ester base lubricating oil (viscosity 18.0 mm at 100 °C 2 / s);

[0041] α-ZrP and MoS 2 The preparation method of the mixed powder is the same as in Example 1, except that 8.0 g α-ZrP and 4.0 g molybdenum disulfide (MoS 2 , Aladdin Reagent (Shanghai) Co., Ltd.) was replaced with 12.0 g α-ZrP and 4.0 g molybdenum disulfide (MoS 2 , Aladdin Reagent (Shanghai) Co., Ltd.), adding 16.0 g petroleum ether (boiling range 60 - 90 o C, Tianjin Kemiou Reagent Co., Ltd.);

[0042] Add 3.0 g α-ZrP and MoS directly to 94.0 g base lithium grease 2 Mixed powder, 2.0 g extreme pressure agent (a mixture of 1.0 g thiophosphoric acid complex ester amine salt and 1.0 g sulfurized isobutylene, Shenyang Zhongda Jiusheng Chemical Technology Co., Ltd.) and 1....

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Abstract

The invention discloses a layered zirconium phosphate and molybdenum disulfide compound extreme pressure grease and a preparation method thereof. The grease comprises the following components by weight percent: 90-96% of base grease, 2.0-7.0% of alpha-layered zirconium phosphate and molybdenum disulfide mixed powder, 1.0-3.0% of an extreme pressure agent and 1.0-2.0% of an antioxidant. The preparation method comprises the following steps: adding 2.0-7.0% of alpha-layered zirconium phosphate and molybdenum disulfide mixed powder, 1.0-3.0% of an extreme pressure agent and 1.0-2.0% of an antioxidant into 90-96% of base grease and then rolling and grinding for 3 times by using a three-roller grinder, thereby acquiring a grease product. The grease disclosed by the invention is capable of promoting the bearing capacity and anti-grinding capacity of the grease. After the grease is mixed with the extreme pressure agent, the grease can meet the rigorous working conditions, such as high impact load.

Description

technical field [0001] The invention relates to a lubricating grease and a preparation method thereof, in particular to a layered zirconium phosphate and molybdenum disulfide composite extreme-pressure lithium-based lubricating grease with high bearing capacity and excellent anti-wear performance and a preparation method thereof, belonging to lubricating grease and its preparation technology field. Background technique [0002] Lithium-based grease has the characteristics of wide temperature range, excellent mechanical and oxidation stability, long service life, and multi-purpose, and is a kind of grease product that has been widely used. With the development of modern industry, many new types of mechanical equipment need to operate under severe working conditions such as heavy load, high speed, high temperature, etc. Therefore, the lubricating grease is required to have a high dropping point, good physical and chemical stability, and outstanding extreme pressure and anti-we...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M125/24C10M125/22C10N30/06C10N30/12C10N50/10
CPCC10M125/22C10M125/24C10M169/00C10M2201/066C10M2201/085C10M2203/1065C10M2205/0206C10M2207/026C10M2207/1265C10M2207/1285C10M2215/064C10M2219/022C10M2223/047C10N2030/06C10N2030/12C10N2050/10C10N2010/02C10N2010/08C10N2020/02
Inventor 徐红张俊科代莹静张效胜董晋湘
Owner TAIYUAN UNIV OF TECH
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