Rare-earth lubricant and preparation method thereof

A technology for lubricating oil and rare earth, applied in the field of lubricating oil, can solve the problems of poor dispersion of nano rare earth oxide particles and cannot be widely used, and achieve the effect of strengthening cleaning and dispersing performance, excellent effect, and good cleaning and dispersing effect.

Active Publication Date: 2017-08-11
山东奈尔润滑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nano-rare earth oxide particles with excellent tribological properties do not have good dispersion in base lubricating oils, so they cannot be widely used.

Method used

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  • Rare-earth lubricant and preparation method thereof
  • Rare-earth lubricant and preparation method thereof
  • Rare-earth lubricant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 0.19g of potassium sulfate to 100mL of a mixed solution of 0.35mol / L yttrium nitrate and lanthanum nitrate with a volume ratio of 1:2, dissolve 1.2g of polyvinyl alcohol in water at 90°C, and then add 11.20g of ammonium bicarbonate to dissolve in In the polyvinyl alcohol solution, the mixed solution of yttrium nitrate and lanthanum nitrate is added therein by reverse dropwise addition. Continue to react for 1h, then age for 4h, wash, filter, and dry. Calcined at 850° C. for 2 h to obtain yttrium oxide / lanthanum oxide nanoparticles. At room temperature, 1.0 g of yttrium oxide / lanthanum oxide nanoparticles was added to 10 mL of water with a pH value of 6.0, and ultrasonically dispersed to obtain a slurry. 0.1 g of stearic acid was dissolved in 50 mL of n-butanol, and then slowly added to the ultrasonically dispersed yttrium oxide / lanthanum oxide nanoparticle slurry, stirred, and then heated to reflux for 2 h. Then filter, wash and dry. A modified mixture of yttrium...

Embodiment 2

[0047] Add 1.0g of ammonium sulfate to 400mL of 0.35mol / L yttrium nitrate and lanthanum nitrate mixed solution with a volume ratio of 1:2, dissolve 5.0g of polyvinyl alcohol in water at 90°C, and then add 50.0g of ammonium bicarbonate to dissolve In the polyvinyl alcohol solution, the mixed solution of yttrium nitrate and lanthanum nitrate is added thereto by reverse dropwise addition. Continue to react for 1h, then age for 4h, wash, filter, and dry. Calcined at 850° C. for 2 h to obtain yttrium oxide / lanthanum oxide nanoparticles. At room temperature, 10.0 g of yttrium oxide / lanthanum oxide nanoparticles were added to 100 mL of water with a pH value of 6.0, and ultrasonically dispersed to obtain a slurry. 1.0 g of stearic acid was dissolved in 300 mL of n-butanol, and then slowly added to the ultrasonically dispersed yttrium oxide / lanthanum oxide nanoparticle slurry, stirred, and then heated to reflux for 3 h. Then filter, wash and dry. A modified mixture of yttrium oxide ...

Embodiment 3

[0050] Add 0.25g ammonium sulfate to 100mL, 0.35mol / L yttrium nitrate, lanthanum nitrate solution, dissolve 1.2g polyvinyl alcohol in water at 90°C, then add 11.20g ammonium bicarbonate to dissolve in polyvinyl alcohol solution, use The mixed solution of yttrium nitrate and lanthanum nitrate was added dropwise in reverse direction. Continue to react for 1h, then age for 4h, wash, filter, and dry. Calcined at 850° C. for 2 h to obtain yttrium oxide / lanthanum oxide nanoparticles. At room temperature, 1.0 g of yttrium oxide / lanthanum oxide nanoparticles was added to 10 mL of water with a pH value of 6.0, and ultrasonically dispersed to obtain a slurry. 0.1 g of stearic acid was dissolved in 50 mL of n-butanol, and then slowly added to the ultrasonically dispersed yttrium oxide / lanthanum oxide nanoparticle slurry, stirred, and then heated to reflux for 2 h. Then filter, wash and dry. A modified yttrium oxide / lanthanum oxide nanoparticle mixture is obtained.

[0051] The mass p...

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Abstract

The invention discloses rare-earth lubricant and a preparation method thereof; the rare-earth lubricant comprises 1-2% of nano graphene, 3-10% of polymethylmethacrylate-coated yttria / lanthana nanoparticles, 5.7-10% of a borate, 2-8% of a surfactant, 3-10% of a friction modifier, 2-10% of dimethyl succinate, 0.3-10% of dimethyl glutarate, and 45-60% of basic lubricant; rare-earth compounds that are added are organically modified, and the dispersibility in the basic lubricant is improved; the rare-earth compounds provide 'friction catalytic cracking' action for the decomposition of borides, the number of active boron atoms on the friction surface is increased, the surface harness and wear resistance of material are improved, and synergic lubrication is further achieved; as containing rare-earth elements and zero corrosive matters such as sulfur and phosphorus, the rare-earth lubricant prepared herein is friendly to a machine part itself, causes no environmental pollution and is widely applicable to industrial production.

Description

technical field [0001] The invention relates to the field of lubricating oil, in particular to a rare earth lubricating oil and a preparation method thereof. Background technique [0002] Lubricants are an essential part of the proper operation and maintenance of machinery. In recent years, with the accelerated replacement of vehicles and machines and increasing specialization, the quality and variety of finished lubricating oil can no longer fully meet the requirements of its anti-wear and anti-friction performance. According to the calculation of Professor Vogelpohl from Germany, 1 / 3 to 1 / 2 of the world's production energy is lost due to friction and wear. In recent years, Professor Jost from the United Kingdom also pointed out that 30-40% of global energy consumption is consumed by friction and wear. It can be seen that the economic loss caused by friction and wear is immeasurable, so improving the lubrication performance to reduce wear is of great significance to the na...

Claims

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Application Information

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IPC IPC(8): C10M141/12C10M141/02C10M161/00C10M177/00C10N30/06C10N30/04C10N30/10C10N40/25
CPCC10M141/02C10M141/12C10M161/00C10M177/00C10M2201/041C10M2201/062C10M2201/087C10M2201/14C10M2207/282C10M2207/289C10M2209/104C10M2209/108C10M2227/061C10N2030/04C10N2030/06C10N2030/10C10N2040/25C10N2020/06
Inventor 王凤磊
Owner 山东奈尔润滑科技有限公司
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