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A kind of layered potassium magnesium phosphate complex lithium base grease composition and preparation method thereof

A potassium-magnesium phosphate composite lithium-based lubricating grease and base lubricating grease technology, applied in the field of lubrication, to achieve the effects of abundant raw material sources, cost reduction, and easy industrialization

Active Publication Date: 2020-06-02
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Layered Magnesium Potassium Phosphate MgKPO 4 ·H 2 O is composed of MgO 6 Octahedron, PO 4 An inorganic layered magnesium phosphate compound composed of tetrahedral laminates, potassium ions and water molecules existing between the laminates [G Jovanovski, S Pocev, B Kaitner. Bulletin of the Chemists and Technologists of Macedonia, 1997, 16(1) : 59 - 63], there is no report about the lamellar potassium magnesium phosphate as a solid lubricant additive

Method used

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  • A kind of layered potassium magnesium phosphate complex lithium base grease composition and preparation method thereof
  • A kind of layered potassium magnesium phosphate complex lithium base grease composition and preparation method thereof
  • A kind of layered potassium magnesium phosphate complex lithium base grease composition and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Add 31.32 g of PAO8 and 4.0 g of 12-hydroxystearic acid to the fat-making kettle, heat up and melt, and slowly add lithium hydroxide aqueous solution (containing 0.5 g of lithium hydroxide) at a temperature of 115 °C. After the lithium hydroxide solution was added, the temperature rose rapidly to 180 °C to completely dehydrate the soap base, and the material was quickly cooled to 115 °C, and 1.0 g of azelaic acid was added, stirred for 10 min, and lithium hydroxide aqueous solution (containing Lithium 0.5 g) to saponify azelaic acid, the temperature was raised to 180 °C and kept for 1 h to complete the dehydration, the temperature was rapidly raised to 200 °C and kept for 20 min, and 62.63 g of PAO8 was added to rapidly cool the lipid base, and continued to stir and cooled to 66 °C , add 0.05 g of diphenylamine, and grind evenly with a high-pressure homogenizer to obtain the basic complex lithium-based grease A.

[0028] Add raw materials into a 30 mL polytetrafluoroeth...

Embodiment 2

[0033]Add 27 g of 100 SN and 8.0 g of stearic acid to the fat-making kettle, heat up and melt, and slowly add lithium hydroxide aqueous solution (containing 2.0 g of lithium hydroxide) at a temperature of 80 °C. After the lithium hydroxide solution is added, the temperature rises rapidly to 130 °C to completely dehydrate the soap base, the material is quickly cooled to 90 °C, 4.0 g of adipic acid is added, stirred for 10 min, and lithium hydroxide aqueous solution (containing Lithium 2.0 g) to saponify adipic acid, raise the temperature to 130 °C and keep for 1 h to complete the dehydration, then rapidly raise the temperature to 220 °C and keep for 20 min, add 54 g of 100 SN to rapidly cool the lipid base, continue to stir and cool to 66 ℃, add 3 g of phenothiazine, and grind evenly with a three-roll machine to obtain the basic complex lithium-based grease B.

[0034] Add raw materials into a 30 mL polytetrafluoroethylene stainless steel kettle: 0.6 g magnesium sulfate, 3.73 g...

Embodiment 3

[0039] Add 28 g of liquid paraffin and 8.0 g of stearic acid to the fat-making kettle, heat up and melt, and slowly add lithium hydroxide aqueous solution (containing 1.5 g of lithium hydroxide) at a temperature of 90 °C. After the lithium hydroxide solution was added, the temperature rose rapidly to 140 °C to completely dehydrate the soap base, and the material was quickly cooled to 100 °C, and 3.0 g of sebacic acid was added, stirred for 10 min, and then lithium hydroxide aqueous solution (containing Lithium 1.5 g) to saponify sebacic acid, raise the temperature to 140 °C and keep for 1 h to complete the dehydration, then rapidly raise the temperature to 205 °C and keep for 20 min, add 54 g of liquid paraffin to rapidly cool the fat base, continue to stir and cool to 66 ℃, add 2.0 g of 2,6-di-tert-butyl-p-cresol, and grind it evenly with a three-roll machine to obtain the basic complex lithium-based grease C.

[0040] Add raw materials into a 30 mL polytetrafluoroethylene st...

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Abstract

The invention discloses a laminar potassium magnesium phosphate composite lithium-based lubricating grease composition and a preparation method thereof. The laminar potassium magnesium phosphate composite lithium-based lubricating grease composition is prepared from the following components in parts by weight: 85.0 to 97.0 parts of basic composite lithium-based lubricating grease and 3.0 to 15.0 parts of a solid lubricating additive, wherein laminar potassium magnesium phosphate MgKPO4.H2O is selected as the solid lubricating additive. The preparation method comprises the following steps: stirring and mixing the basic composite lithium-based lubricating grease and the laminar potassium magnesium phosphate MgKPO4.H2O under a room temperature to 300 DEG C for 1 to 24 hours, and grinding and homogenizing for 0.5 to 3.0 hours by utilizing a three-roller machine or a high-pressure homogenizer, thus preparing a composite lithium-based lubricating grease product. According to the laminar potassium magnesium phosphate composite lithium-based lubricating grease composition and the preparation method thereof, disclosed by the invention, the laminar potassium magnesium phosphate MgKPO4.H2O is used as the solid lubricating additive of the composite lithium-based lubricating grease, and the preparation method is simple and easy, and industrialization is easy to realize.

Description

technical field [0001] The invention discloses a composite lithium-based lubricating grease composition with excellent load-bearing and anti-wear properties and a preparation method thereof, in particular to a lubricating grease composition containing layered potassium magnesium phosphate as a solid lubricating additive and a preparation method thereof, belonging to the technical field of lubrication . Background technique [0002] With the rapid development of modern industry and the extensive use of high temperature, high speed and heavy load equipment, the production department requires the use of high temperature resistant, high load and long life lubricating grease to prolong the service life of these equipment and improve productivity. Reduce costs to obtain greater economic benefits. Lithium-complex grease is a correct choice. Lithium-complex grease is a high-temperature multi-effect grease with excellent mechanical stability, colloidal stability, oxidation stability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10N30/06C10N10/02C10N10/04C10N50/10
CPCC10M169/00C10M2201/085C10M2203/1006C10M2205/0206C10M2205/163C10M2207/026C10M2207/123C10M2207/1265C10M2207/127C10M2207/1285C10M2207/2835C10M2215/064C10M2219/108C10M2229/0415C10N2030/06C10N2050/10C10N2010/02C10N2010/04
Inventor 董晋湘张效胜牛文星代莹静徐红
Owner TAIYUAN UNIV OF TECH