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A kind of preparation method of porous polyimide intelligent lubricating material

A polyimide and lubricating material technology, which is applied in the field of preparation of porous polyimide intelligent lubricating materials, can solve the problems of material durability decline, etc. Effect

Active Publication Date: 2021-07-30
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN106751718A discloses a closed microcapsule intelligent lubrication composite material. This method realizes the intelligent release of lubricating particles and the controllability of oil content. However, since the lubricating particles prepared by this method are closed, they must be released through wear and tear, resulting in material Decreased durability of

Method used

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  • A kind of preparation method of porous polyimide intelligent lubricating material
  • A kind of preparation method of porous polyimide intelligent lubricating material
  • A kind of preparation method of porous polyimide intelligent lubricating material

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Embodiment 1

[0026] Embodiment 1 A preparation method of a porous polyimide intelligent lubricating material, comprising the following steps:

[0027] ⑴ Preparation of leucine gelling factor:

[0028] Add 6.56g of leucine, 12.12g of cetyl alcohol and 11.41g of p-toluenesulfonic acid monohydrate into 100 mL of toluene solvent, heat to 120°C and stir to form a homogeneous solution, then reflux for 24 hours for esterification. Then the toluene solvent was removed by rotary evaporation to obtain an oily substance; the oily substance was first dissolved in chloroform, and then a saturated sodium bicarbonate solution was added dropwise to adjust the pH value of the aqueous phase to be neutral, and the chloroform phase was collected and rotary evaporated to obtain leucine hexadecane Alcohol ester; leucine hexadecyl alcohol ester was dissolved in absolute ethanol, then 10.69g gluconolactone was added, stirred and refluxed at 110°C for 8h. After the reaction was completed, the ethanol solvent was ...

Embodiment 2

[0031] Embodiment 2 A preparation method of a porous polyimide intelligent lubricating material, comprising the following steps:

[0032] ⑴ Preparation of leucine gelling factor:

[0033] Add 6.56g of leucine, 13.34g of cetyl alcohol and 13.31g of p-toluenesulfonic acid monohydrate into 120 mL of toluene solvent, heat to 130°C and stir to form a homogeneous solution, then reflux for 18 hours for esterification. Then the toluene solvent was removed by rotary evaporation to obtain an oily substance; the oily substance was first dissolved in chloroform, and then a saturated sodium bicarbonate solution was added dropwise to adjust the pH value of the aqueous phase to be neutral, and the chloroform phase was collected and rotary evaporated to obtain leucine hexadecane Alcohol ester; leucine hexadecyl alcohol ester was dissolved in absolute ethanol, then 11.58g gluconolactone was added, stirred and refluxed at 100°C for 8h. After the reaction was completed, the ethanol solvent was ...

Embodiment 3

[0036] Embodiment 3 A preparation method of a porous polyimide intelligent lubricating material, comprising the following steps:

[0037] ⑴ Preparation of leucine gelling factor:

[0038] Add 6.56g of leucine, 14.54g of cetyl alcohol and 14.27g of p-toluenesulfonic acid monohydrate into 150 mL of toluene solvent, heat to 150°C, stir and mix to form a homogeneous solution, and reflux for 12 hours for esterification. Then the toluene solvent was removed by rotary evaporation to obtain an oily substance; the oily substance was first dissolved in chloroform, and then a saturated sodium bicarbonate solution was added dropwise to adjust the pH value of the aqueous phase to be neutral, and the chloroform phase was collected and rotary evaporated to obtain leucine hexadecane Alcohol ester; leucine hexadecyl alcohol ester was dissolved in absolute ethanol, then 13.36g gluconolactone was added, stirred and refluxed at 90°C for 12h. After the reaction was completed, the ethanol solvent ...

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Abstract

The present invention relates to a kind of preparation method of porous polyimide intelligent lubricating material, and the method comprises the following steps: (1) prepare leucine gel factor: add leucine, cetyl alcohol and p-toluenesulfonic acid monohydrate in toluene solvent After the esterification reaction, an oily substance is obtained; the oily substance is first dissolved and then the pH value is adjusted to obtain leucine cetyl alcohol ester; leucine cetyl alcohol ester is dissolved in absolute ethanol, then gluconolactone is added, and after reflux After the reaction, dissolve the residue in hot 1,4-dioxane, filter it while it is hot, and then recrystallize to obtain the leucine gel factor; (2) prepare porous polyimide intelligent lubricating material: polyimide After the powder is sieved, the bulk porous polyimide material is obtained by cold pressing, setting the mold under normal pressure, sintering, and cutting into blocks; adding leucine gel factor into the lubricating oil, and fully dissolving the block after heating The porous polyimide material is soaked and cooled at room temperature, that is, the porous polyimide intelligent lubricating material. The invention can effectively improve the oil retention rate.

Description

technical field [0001] The invention relates to the technical field of intelligent lubrication, in particular to a preparation method of a porous polyimide intelligent lubrication material. Background technique [0002] With the increasing demand for high-precision machining strategies, the mechanical transmission components used in high-end precision CNC machine tools have higher and higher requirements for the durability of lubricating materials. However, the smart lubricating performance of traditional porous polyimide composite materials is limited. Due to the leverage effect of oil content and oil retention rate, it is impossible to maintain high oil content and oil retention rate at the same time, which will greatly reduce the durability of smart lubricating materials. Therefore, in the field of smart lubrication, how to prepare a durable smart lubricating material with both high oil content and high oil retention has become a research hotspot. [0003] Patent CN10675...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42C08L79/08
Inventor 王廷梅邵明超王超李宋王齐华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI