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A kind of anti-space radiation poss-based ionic liquid and its preparation method and application

An ionic liquid and space technology, which is applied in the direction of sulfonate preparation, chemical instruments and methods, and compounds of Group 5/15 elements of the periodic table, can solve space lubricant erosion damage, degradation of physical and chemical properties, and lack of anti-corrosion properties. AO radiation performance and other issues, to achieve the effect of high load capacity, excellent anti-friction and anti-wear performance

Active Publication Date: 2021-02-23
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

Research at home and abroad has proved that AO has extremely strong reactivity, and it can cause serious erosion and damage to space lubricants through various forms such as chemical bond breaking, decomposition, oxidation and polymerization, resulting in degradation of physical and chemical properties of space lubricants and failure , which pose a serious threat to the operational safety of spacecraft (Wang, H. Z.; Wang, X.L.; Qiao, D.; Sun, X. J.; Feng, D. P.; Liu, W. M. Chem. Lett. , 2014, 43 ,1578-1580.)
The space lubricants currently used in my country do not have the ability to resist AO radiation, and it is easy to cause lubrication failure after long-term service in the space environment

Method used

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  • A kind of anti-space radiation poss-based ionic liquid and its preparation method and application
  • A kind of anti-space radiation poss-based ionic liquid and its preparation method and application
  • A kind of anti-space radiation poss-based ionic liquid and its preparation method and application

Examples

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Effect test

Embodiment 1

[0053] Example 1 An anti-space irradiation POSS-based ionic liquid POSS-1-EDHPA, the ionic liquid is a functionalized quaternary ammonium ionic liquid, its cations are POSS quaternary ammonium salts with different chain lengths, and the anions are diisooctyl Phosphate (EDHPA), its structural formula is as follows:

[0054] ,

[0055] Where: R 1 = isobutyl, R 2 =CH 3 .

[0056] The preparation method of the anti-space radiation POSS-based ionic liquid comprises the following steps:

[0057] (1) Add 0.02 mole of aminopropyl POSS, 0.08 mole of methyl iodide, 0.16 mole of solid K to solvent acetonitrile 2 CO 3 , reacted at room temperature for 48 h under inert gas and protected from light (because methyl iodide has a low boiling point but high activity, so it reacted at room temperature), cooled to room temperature to precipitate a white powder, and evaporated the solvent with a rotary evaporator.

[0058] (2) Dissolve the white powder with dichloromethane, filter K with ...

Embodiment 2

[0062] Example 2 An anti-space irradiation POSS-based ionic liquid POSS-1-DOSS, the ionic liquid is a functionalized quaternary ammonium ionic liquid, its cations are POSS quaternary ammonium salts with different chain lengths, and the anions are di-succinate Isooctyl sulfonate (DOSS), its structural formula is as follows:

[0063] ,

[0064] Where: R 1 = isobutyl, R 2 =CH 3 .

[0065] The preparation method of the anti-space radiation POSS-based ionic liquid comprises the following steps:

[0066] (1) Add 0.02 mole of aminopropyl POSS, 0.08 mole of methyl iodide, 0.16 mole of solid K in solvent acetonitrile 2 CO 3 , reacted at room temperature for 48 h under an inert gas and protected from light, cooled to room temperature and precipitated a white powder, and evaporated the solvent with a rotary evaporator.

[0067] (2) Dissolve the white powder with dichloromethane, filter K with a water pump and a Bush funnel under reduced pressure 2 CO 3 , to obtain the filter res...

Embodiment 3

[0071] Example 3 An anti-space irradiation POSS-based ionic liquid POSS-4-EDHPA, the ionic liquid is a functionalized quaternary ammonium ionic liquid, its cations are POSS quaternary ammonium salts with different chain lengths, and the anions are diisooctyl Phosphate (EDHPA), its structural formula is as follows:

[0072] ,

[0073] Where: R 1 = isobutyl, R 2 =C 4 h 9 .

[0074] The preparation method of the anti-space radiation POSS-based ionic liquid comprises the following steps:

[0075] (1) Add 0.02 mole of aminopropyl POSS, 0.08 mole of iodobutane, 0.16 mole of solid K in solvent acetonitrile 2 CO 3 , reflux reaction under inert gas and protection from light for 48 h, cooled to room temperature to precipitate a white powder, and evaporated the solvent with a rotary evaporator.

[0076] (2) Dissolve the white powder with dichloromethane, filter K with a water pump and a Bush funnel under reduced pressure 2 CO 3 , to obtain the filter residue and filtrate resp...

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Abstract

The invention relates to a space radiation resistant POSS-based ionic liquid, the ionic liquid is a functionalized quaternary ammonium ionic liquid, the cation is POSS quaternary ammonium salt with different chain lengths, and the anion is diisooctyl phosphate (EDHPA) Or diisooctyl sulfonate succinate (DOSS). The invention also discloses the preparation method and application of the ionic liquid. The ionic liquid of the invention has excellent anti-friction and anti-wear properties and high load-carrying capacity.

Description

technical field [0001] The invention relates to the technical field of space lubricants, in particular to a POSS-based ionic liquid resistant to space radiation and its preparation method and application. Background technique [0002] Vigorously developing the aerospace industry (satellites, space stations, manned spacecraft and other aerospace equipment) has very far-reaching significance. However, the harsh space environment, especially the high vacuum environment, charged particles, neutral particles, electromagnetic radiation, etc., have caused serious damage to the life and stability of space machinery (Chen, J.; Ding, N.W.; Li, Z.F.; Wang, W. Prog. Aerosp. Sci. , 2016, 83 , 37-56. Shen Zicai; Jiang Haifu; Xu Kunbo; Ding Yigang; Liu Yuming. Aerospace Materials Technology, 2016, 2 , 1-8.), traditional lubricating greases are difficult to meet the lubrication and protection requirements of lubricating parts under such harsh conditions. Therefore, more and more people p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/21C07C303/32C07C309/17C07F9/11C10M139/04C10M137/04C10M135/10C10N30/06C10N30/10
CPCC07C303/32C07C309/17C07F7/21C07F9/11C10M135/10C10M137/04C10M139/04C10N2030/06C10N2030/10
Inventor 周峰于强亮蔡美荣张朝阳裴小维刘维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI