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S-triazine ionic liquid used as lubricant and preparation method thereof

An ionic liquid, s-triazine technology, applied in the preparation of sulfonates, lubricating compositions, preparation of sulfonic acid amides, etc., can solve problems such as expensive costs, complex synthesis steps, substrate corrosion limitations, etc. The effect of friction smoothness and anti-wear and anti-friction properties

Active Publication Date: 2014-02-12
中科润泉(烟台)工业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ionic liquids reported in the literature as lubricants are generally ionic liquids in which quaternary ammonium, quaternary phosphorus, pyridine, and imidazoles are cationic. These ionic liquids all need to be prepared through steps such as alkylation, ion exchange, separation, and purification. Complicated synthesis steps, high cost, and corrosion to substrates limit their application in the field of tribology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] [Li(C 3 N 3 (OR 2 ) 3 ] BF 4 Synthesis

[0025] Add 19.22 g (0.16 mol) of diethylene glycol monomethyl ether and 3.68 g (0.16 mol) of sodium into a 250 ml three-neck flask, and stir at about 115 °C under the protection of argon until the sodium reaction is complete to obtain a sodium alkoxide solution. Using 200 ml of tetrahydrofuran as a solvent, add 9.83 g (0.0533 mol) of cyanuric chloride to the above sodium alkoxide solution, stir and react for about 10 h at room temperature, dissolve the product in chloroform, wash with water, and dry to obtain s-triazinediethylene glycol mono Methyl ether derivative C 3 N 3 (OR 2 ) 3 19.97 g (85.8% yield). Will C 3 N 3 (OR 2 ) 3 with 3 times the molar amount of LiBF 4 Mix and stir until a homogeneous ionic liquid lubricant [Li(C 3 N 3 (OR 2 ) 3 ] BF 4 . Its average friction coefficient and wear volume at 500 N, 200 °C are 0.097 and 97.3×10 -5 mm 3 .

Embodiment 2

[0027] [Li(C 3 N 3 (OR 3 ) 3 )]BF 4 Synthesis

[0028]Add 13.14 g (0.08 mol) of triethylene glycol monomethyl ether and 1.84 g (0.08 mol) of sodium into a 250 ml three-neck flask, and stir at about 120 °C under the protection of argon until the sodium reaction is complete to obtain a sodium alkoxide solution. Using 150 ml of tetrahydrofuran as a solvent, add 4.93 g (0.0267 mol) of cyanuric chloride to the above sodium alkoxide solution, stir and react at room temperature for about 11 h, dissolve the product in chloroform, wash with water, and dry to obtain s-triazine triethylene glycol mono Methyl ether derivative C 3 N 3 (OR 3 ) 3 12.84 g (84.8% yield). Will C 3 N 3 (OR 3 ) 3 with 3 times the molar amount of LiBF 4 Mix and stir until a homogeneous ionic liquid lubricant [Li(C 3 N 3 (OR 3 ) 3 )]BF 4 . Its average friction coefficient and wear volume at 500 N and 200 °C are 0.097 and 98.5×10 -5 mm 3 .

Embodiment 3

[0030] [Li(C 3 N 3 (OR 4 ) 3 ] BF 4 Synthesis

[0031] Add 12.46 g (0.06 mol) tetraethylene glycol monomethyl ether and 1.38 g (0.06 mol) sodium into a 250 ml three-necked flask, and stir at about 125 °C under the protection of argon until the sodium reaction is complete to obtain a sodium alkoxide solution. Using 100 ml of tetrahydrofuran as a solvent, add 3.7 g (0.02 mol) of cyanuric chloride to the above sodium alkoxide solution, stir and react at room temperature for about 12 h, dissolve the product in chloroform, wash with water, and dry to obtain s-triazine tetraethylene glycol mono Methyl ether derivative C 3 N 3 (OR 4 ) 3 11.57 g (82.6% yield). Will C 3 N 3 (OR 4 ) 3 with 3 times the molar amount of LiBF 4 Mix and stir until a homogeneous ionic liquid lubricant [Li(C 3 N 3 (OR 4 ) 3 ] BF 4 . Its average friction coefficient and wear volume at 500 N, 200 °C are 0.098 and 99.1×10 -5 mm 3 .

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Abstract

The invention discloses an s-triazine ionic liquid used as a lubricant and a preparation method thereof. The ionic liquid is obtained by mixing diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, or tetraethylene glycol monomethyl ether derivatives of s-triazine with lithium tetrafluoroborate, lithium hexafluorophosphate, lithium trifluoromethanesulfonate or lithium bis(trifluoromethylsulfonyl)imide. The ionic liquid has good chemical stability, heat stability and antifriction antiwear performance. The preparation method of the ionic liquid provided in the invention is simple, low in cost, excellent in performance, and suitable for industrial application.

Description

technical field [0001] The invention relates to a s-triazine ionic liquid used as a lubricant and a preparation method thereof. The ionic liquid lubricant has excellent friction-reducing and anti-wear properties. Background technique [0002] In recent years, as an efficient green solvent and environment-friendly catalyst, ionic liquids have received widespread attention in the fields of organic synthesis, catalysis, and electrochemistry (Welton, T.; Wasserscheid, P. German: Wiley-VCH, 2002 , 23.), which has the characteristics of non-flammable and explosive, low melting point, extremely low volatility and high thermal stability, which is very consistent with the expected performance of an ideal lubricant, and is a new type of lubricant with great development prospects ( Ye, C.; Liu, W.; Chen, Y.; Yu, L. Chem. Commun. 2001 , 21 , 2244-2245.). At the same time, the unique "designability" of ionic liquids allows us to introduce one or more functional groups into the cation...

Claims

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Application Information

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IPC IPC(8): C10M105/70C07D251/30C07C311/48C07C309/06C07C303/32C07C303/40
Inventor 凡明锦宋增红周峰刘维民梁永民
Owner 中科润泉(烟台)工业科技有限公司
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