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Preparation method for porous polyimide intelligent lubricating material

A technology of polyimide and lubricating materials, which is applied in the field of preparation of porous polyimide intelligent lubricating materials, can solve the problems of material durability decline, achieve improved stability, high oil retention rate, and increase oil retention rate Effect

Active Publication Date: 2019-05-10
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method for porous polyimide intelligent lubricating material
  • Preparation method for porous polyimide intelligent lubricating material
  • Preparation method for porous polyimide intelligent lubricating material

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Effect test

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 invention relates to a preparation method for a porous polyimide intelligent lubricating material. The method comprises the following steps: (1) preparing a leucine gelator: adding leucine, hexadecanol and a p-toluene sulfonic acid monohydrate to a methylbenzene solvent, after performing an esterification reaction, to obtain an oily substance; firstly dissolving the oily substance, and adjusting a pH value, to obtain leucine hexadecyl ester; after enabling the leucine hexadecyl ester to be dissolved in absolute ethyl alcohol, adding glucolactone, after performing a reflux reaction, enabling a residue to be dissolved in hot 1,4-dioxane, filtering while hot, and recrystallizing, to obtain the leucine gelator; and (2) preparing the porous polyimide intelligent lubricating material: aftersieving polyimide powder, cold-pressing, covering die in a normal pressure, sintering, and slicing, preparing a massive porous polyimide material; adding the leucine gelator to lubricating oil, afterheating and adequately dissolving, enabling the massive porous polyimide material to be immerged, cooling in a room temperature, to obtain the porous polyimide intelligent lubricating material. The porous polyimide intelligent lubricating material is capable of effectively improving an oiliness 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 Applications(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
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