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High-temperature plateau mountain vehicle hub bearing lubricating grease and preparation method thereof

A technology for wheel hub bearing and grease, which is applied to the field of high temperature plateau mountain vehicle wheel hub bearing grease and its preparation, can solve the problems of low grease dropping point, grease loss, low performance, etc., and achieves good storage stability and good rubber. Compatibility, the effect of reducing production costs

Active Publication Date: 2020-09-01
军事科学院系统工程研究院军事新能源技术研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the general-purpose grease base oil for the U.S. military ground equipment is fully synthetic, and the cost is high, and when used on heavy-duty vehicles, there will also be fat loss, which is not suitable for commercial applications; commercial applications represented by Mobil SHC220 with low performance Grease, in line with LB-GC product standard in ASTM D4950, its base oil is fully synthetic or mineral oil type, the cost has been reduced, but this type of grease has a low dropping point, extreme pressure anti-wear performance and water resistance Poor, the compatibility with neoprene and other rubbers is average, and there is no requirement for oxidation stability and evaporation loss. In plateau areas where the operating environment is relatively harsh, the problem of grease loss is prominent, and the relubrication cycle is greatly shortened. Some greases even Throw it on the tires and brake pads, threatening driving safety

Method used

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  • High-temperature plateau mountain vehicle hub bearing lubricating grease and preparation method thereof
  • High-temperature plateau mountain vehicle hub bearing lubricating grease and preparation method thereof
  • High-temperature plateau mountain vehicle hub bearing lubricating grease and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] This embodiment provides a (full mineral oil type) high-temperature and high-altitude mountain vehicle hub bearing lubricating grease. The components are: 85.5% base oil, 10% thickener, and 4.5% additives. The base oil is a refined paraffin-based blended lubricating oil. The thickener is a complex lithium-based thickener, the base is lithium hydroxide, the molar ratio of lithium hydroxide to water in the lye is 1:4, the high-molecular acid is 12-hydroxystearic acid, and the low-molecular acid is decane Acid, the molar ratio of 12-hydroxystearic acid to sebacic acid is 3:1. The additives are 0.5% of alkyl diphenylamine antioxidant, 0.5% of polymer liquid phenol antioxidant, 0.2% of thiocarbamate / thiophosphate antioxidant, and 0.2% of benzotriazole rust inhibitor. %, triphenyl thiophosphate extreme pressure antiwear agent 2.5%, ethylene-propylene copolymer tackifier 0.6%, the sum is 100%.

[0047] This embodiment also provides a kind of (full mineral oil type) high-temp...

Embodiment 2

[0053] This embodiment provides a (full mineral oil type) high-temperature and high-altitude mountain vehicle hub bearing lubricating grease. The components are: 79.8% of base oil, 12% of thickener, and 8.2% of additives. The base oil is refined paraffin-based mixed lubricating oil, the thickener is a complex lithium-based thickener, the alkali is lithium hydroxide, the molar ratio of lithium hydroxide to water in the lye is 1:6, and the polymer acid is 12-hydroxyl Stearic acid, the low-molecular acid is azelaic acid, and the molar ratio of 12-hydroxystearic acid to the low-molecular acid composition is 6:1. Additives include 0.8% alkyl dianiline antioxidant, 0.8% polymer liquid phenol antioxidant, 1% thiocarbamate / thiophosphate antioxidant, 0.6% barium petroleum sulfonate rust inhibitor , Thiophosphate type extreme pressure antiwear agent 4%, polyisobutylene tackifier 1%, the sum is 100%.

[0054] This embodiment also provides a kind of (all mineral oil type) high-temperatur...

Embodiment 3

[0060] This embodiment provides a (full mineral oil type) high-temperature and high-altitude mountain vehicle hub bearing lubricating grease. The components are: 79% of base oil, 12% of thickener, and 9% of additives. The base oil is refined paraffin-based mixed lubricating oil with a viscosity of 180mm at 40°C 2 / s~220mm 2 / s, viscosity greater than 15mm at 100°C 2 / s. The thickener is a complex lithium-based thickener, the base is lithium hydroxide, the molar ratio of lithium hydroxide to water in the lye is 1:2 to 1:6, the high molecular acid is 12-hydroxystearic acid, and the low molecular weight The acid is a combination of azelaic acid and sebacic acid, and the molar ratio of 12-hydroxystearic acid to the low-molecular acid composition is 1:1. Additives include 0.5% alkyl dianiline antioxidant, 0.7% polymer liquid phenol antioxidant, 1.3% thiocarbamate / thiophosphate antioxidant, 0.5% calcium petroleum sulfonate rust inhibitor , thiourethane and thiophosphate type ext...

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Abstract

The invention relates to high-temperature plateau mountain vehicle hub bearing lubricating grease and a preparation method thereof. The high-temperature plateau mountain vehicle hub bearing lubricating grease comprises the following components in percentage by weight: 70-90% of base oil, 5-20% of a thickening agent, and 1.5-12.5% of an additive, wherein the base oil is mineral oil with the viscosity of 180-220 mm<2> / s at 40 DEG C, and the thickening agent is a composite lithium-based thickening agent. According to the full mineral oil type high-temperature plateau mountain vehicle hub bearinglubricating grease provided by the invention, on the premise of excellent high-temperature performance, extreme-pressure anti-wear performance and water resistance, the production cost is controlled,the problem of fat loss of existing hub bearing lubricating grease is solved, and the hub bearing lubricating grease can be used within the temperature range of -30 DEG C to 180 DEG C for a long timeand can meet the use requirements of various vehicle hub bearings in areas (including plateau mountainous regions) at -30 DEG C or above.

Description

technical field [0001] The invention relates to the technical field of lubrication, in particular to a lubricating grease for wheel hub bearings of high-temperature plateau mountain vehicles and a preparation method thereof. Background technique [0002] Automobile hub bearings are one of the most important parts of vehicles using grease, accounting for more than 30% of the total amount of grease used in vehicles. The main function of hub bearing grease is to reduce friction and wear and prolong the service life of bearings. Heavy-duty vehicles often use tapered roller bearings in the wheel hub. Due to the surface contact between the rollers and the inner and outer rings, this type of bearing has some sliding friction. The working environment of the lubricant is more harsh than other bearings. When the bearing is working normally, the The thinner the lubricating oil film, the greater the impact load on the bearing, and poor lubrication will easily cause bearing wear. There...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10N50/10C10N40/02C10N30/02C10N30/06C10N30/08
CPCC10M169/00C10M2203/1025C10M2207/1285C10M2207/1276C10M2215/064C10M2219/066C10M2223/047C10M2215/223C10M2205/022C10M2205/024C10M2219/044C10M2205/026C10M2219/062C10M2209/084Y02T10/86
Inventor 米红英王晶杨庭栋康军石俊峰吴宝杰
Owner 军事科学院系统工程研究院军事新能源技术研究所
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