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Lubricating grease compound additive and lubricating grease composition prepared from lubricating grease compound additive

A grease composition and compound additive technology, applied in the field of grease additives, can solve problems such as hindering organic extreme pressure agents and chemical protective films on the surface of friction pairs, and achieve stable anti-wear performance, excellent extreme pressure, and improved extreme pressure. performance effect

Pending Publication Date: 2022-05-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that during operation, α-ZrP particles adhered to the surface of the friction pair to form a dense physical protective film, which hindered the formation of a chemical protective film between the organic extreme pressure agent and the surface of the friction pair, resulting in the inability of the two additives to form a good synergy. Synergy

Method used

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  • Lubricating grease compound additive and lubricating grease composition prepared from lubricating grease compound additive
  • Lubricating grease compound additive and lubricating grease composition prepared from lubricating grease compound additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of STAB-ZrP compound: according to mass ratio α-ZrP (Zr(HPO 4 ) 2 ·H 2 O): distilled water (H 2O)=1 : 150 Weigh α-ZrP, after mixing, stir evenly at room temperature, and then according to the molar ratio of methylamine (CH 5 N): α-ZrP (Zr(HPO 4 ) 2 ·H 2 (O) = 1:1 ratio of methylamine was added, stirred at room temperature for 24 hours to obtain methylamine pre-intercalated zirconium phosphate suspension; then according to the molar ratio STAB (C 21 h 46 BrN): α-ZrP (Zr(HPO 4 ) 2 ·H 2 (0) = 1: 1 Weigh STAB and add it to the α-ZrP suspension pre-intercalated with methylamine, stir at room temperature for 24 hours, the product is centrifuged, washed with distilled water, dried at room temperature and air-dried, using X-ray Diffractometer (XRD) was used to characterize the crystal structure, and the content of interlayer organic matter was characterized by elemental analysis of C, H, and N, and STAB-ZrP with an interlayer organic matter cont...

Embodiment 2

[0032] Using the STAB-ZrP (STAB: 44.67 wt.%) prepared in Example 1;

[0033] Basic lithium base grease is prepared with embodiment 1;

[0034] Add 3.0 g STAB-ZrP (STAB: 44.67 wt.%), 0.5 g T746 and 2.0 g BHT as grease additives to 94.5 g of basic lithium-based grease, and use a three-roll mill to roll and grind 3 times to make the additives in the basic lithium Mix well with base grease to obtain a lithium base grease product containing 3.0 wt.% STAB-ZrP (STAB: 44.67 wt.%) (abbreviated as 3.0 wt.% STAB-ZrP (STAB: 44.67 wt.%) lithium base fat).

[0035] The SRV-V friction and wear testing machine was used to characterize the anti-wear and anti-friction properties of the prepared lubricating grease products. The load is 200 N, the frequency is 50 Hz, the step size is 1 mm, the temperature is 80 °C, and the time is 30 min. See Table 1 for the data.

Embodiment 3

[0037] Using the STAB-ZrP (STAB: 44.67 wt.%) prepared in Example 1;

[0038] Basic lithium base grease is prepared with embodiment 1;

[0039] Add 5.0 g STAB-ZrP (STAB: 44.67 wt.%), 1.0 g T746 and 1.0 g BHT as grease additives to 93.0 g of basic lithium-based grease, and use a three-roll mill to roll and grind 3 times to make the additives in the basic lithium Mix well with base grease to obtain a lithium base grease product containing 5.0 wt.% STAB-ZrP (STAB: 44.67 wt.%) (abbreviated as 5.0 wt.% STAB-ZrP (STAB: 44.67 wt.%) lithium base fat).

[0040] The SRV-V friction and wear testing machine was used to characterize the anti-wear and anti-friction properties of the prepared lubricating grease products. The frequency is 50 Hz, the step size is 1 mm, the temperature is 80 °C, and the time is 30 min. See Tables 1 and 2 for the data.

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Abstract

The invention discloses a lubricating grease compound additive and a lubricating grease composition prepared from the lubricating grease compound additive. The lubricating grease compound additive comprises an organic alkali intercalation zirconium phosphate compound and an extreme pressure agent, the organic base intercalation zirconium phosphate compound comprises one or two of organic amine intercalation zirconium phosphate, single-long-chain organic ammonium intercalation zirconium phosphate or double-long-chain organic ammonium intercalation zirconium phosphate. The lubricating grease composition comprises the following components in parts by weight: 90.0 to 98.0 parts of base grease, 1.0 to 7.0 parts of an organic alkali intercalation zirconium phosphate compound, 0 to 3.0 parts of an extreme pressure agent and 0.5 to 1.0 part of an antirust agent, and 0.5 to 2.0 parts of an antioxidant. The additive composition disclosed by the invention combines the advantages of a solid additive and an organic extreme pressure agent, and dual protection of a submicron-sized intercalated zirconium phosphate physical protective film and a nano-sized extreme pressure agent chemical protective film exists on the surface of a friction pair at the same time, so that the extreme pressure property of the lubricating grease is improved, the stable wear resistance is ensured, and the service life of the lubricating grease is prolonged. And the service life of the equipment is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease additives, and in particular relates to a lubricating grease additive and its compound system, as well as its bearing capacity and anti-wear and anti-friction properties. Background technique [0002] With the continuous development of modern industrial technology, more and more mechanical equipment needs to operate under harsh working conditions (such as high speed and heavy load, low speed and heavy load, high temperature or strong impact, etc.). Under these harsh conditions, mechanical equipment often suffers from excessive wear, and in severe cases, it may even seize, causing catastrophic damage to the equipment. In order to effectively prevent this phenomenon, it is necessary to add solid additives and extreme pressure agents to the lubricant. This is because during the friction process, the lubricant will change the condition of the surface of the friction pair. For the grease c...

Claims

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Application Information

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IPC IPC(8): C10M125/24C10M169/06C10N50/10C10N30/06C10N30/10C10N30/12
CPCC10M125/24C10M169/06C10M2201/085C10M2201/14C10M2207/1265C10M2207/1285C10M2215/04C10N2050/10C10N2030/06C10N2030/10C10N2030/12C10N2030/56C10N2010/08C10N2020/06C10N2010/02
Inventor 董晋湘牛文星侯志国刘雷徐红
Owner TAIYUAN UNIV OF TECH
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