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Preparation method of 2D MOFs nanosheet-based lubricant

A base lubricant and nanosheet technology, which can be used in lubricating compositions, petroleum industry, etc., can solve the problem of high cost, and achieve the effects of low cost, easy operation and simple synthesis conditions.

Inactive Publication Date: 2021-06-08
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the "bottom-up" method to prepare 2D MOFs nanosheets cannot avoid problems such as high cost and environmental pollution.

Method used

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  • Preparation method of 2D MOFs nanosheet-based lubricant
  • Preparation method of 2D MOFs nanosheet-based lubricant
  • Preparation method of 2D MOFs nanosheet-based lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of Zn(Bim)(OAc) Nanosheets

[0028] Grind 0.657g of zinc acetate dihydrate into powder and dissolve it in 30mL of base oil under ultrasonic conditions to obtain the oil phase, dissolve 2.124g of benzimidazole in 30mL of a mixed solution of 10mL of ethanol and 20mL of deionized water with a volume ratio of 1:2 to obtain an aqueous phase. Then the oil phase solution was added dropwise to the upper layer of the water phase to obtain a layered reaction solution, which was left to react at 25°C for 10 h. After the reaction, a white film was produced at the interface between the two phases, and the white film in the middle layer was obtained by filtration, dried in an air blast oven at 85°C for 17 hours, and the white powder was collected after grinding.

[0029] Such as figure 1 As shown in the SEM photos of the prepared Zn(Bim)(OAc) nanosheets, the thickness is about 3-4nm.

[0030] The Zn (Bim) (OAc) nanosheet that takes 0.08g is added in the 150SN base oil ...

Embodiment 2-3

[0033]Grind 0.657g of zinc acetate dihydrate into powder and dissolve it in 30mL of base oil under ultrasonic conditions to obtain the oil phase. The aqueous phase was obtained from 30 mL of the mixed solution. Then, the oil phase solution was added dropwise to the upper layer of the water phase to obtain a stratified reaction solution, which was allowed to stand at 25° C. for 10 h. After the reaction finishes, there is a white film at the two-phase interface, and the white film in the middle layer is obtained by filtration, dried in an air blast oven at 85°C for 17 hours, and the white powder is collected after grinding.

[0034] Prepare Zn(Bim)(OAc) nanosheet-based lubricant according to the method of Example 1.

[0035] The Zn(Bim)(OAc) nanosheet-based lubricants in Examples 2 and 3 can be stably dispersed in base oil for 100-120 days, but can only be stably dispersed in vegetable oil for 20-30 days.

Embodiment 4-6

[0043] Preparation of 2D ZnBDC nanosheets

[0044] Grind 0.595g of zinc nitrate hexahydrate into powder and dissolve it in 30mL of base oil under ultrasonic conditions to obtain the oil phase, and decompose 1.992g of terephthalic acid in the volume ratio of N,N-dimethylformamide and deionized water respectively The aqueous phase was obtained from 30 mL of mixed solutions of 1:2, 1:3 and 1:6. Then the oil phase solution was added dropwise to the upper layer of the water phase to obtain a stratified reaction solution, which was allowed to stand at 25°C for 10 h. After the reaction, a white film was produced at the interface between the two phases. The white film in the middle layer was obtained by filtration, dried in a blast drying oven at 85°C for 17 hours, and the white powder 2D ZnBDC nanosheets were collected after grinding.

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Abstract

The invention relates to a preparation method of a 2D MOFs nanosheet-based lubricant. The preparation method comprises the following steps of: preparing 2D MOFs nanosheets through a liquid-liquid interface synthesis method; and preparing the 2D MOFs nanosheet-based lubricant by using a grinding, stirring or ultrasonic dispersion method. According to the invention, the defect that industrial application of the 2D inorganic nano-material in the lubricant is difficult to realize due to insufficient congenital dispersibility and stability is overcome, and the 2D MOFs composed of an organic compound and metal ions or metal clusters have a natural organic interface and have weak molecular force effect between layers of the 2D inorganic nano-material, high dispersion and stability of the molecular size can be realized without modification, and meanwhile, the anti-friction and anti-wear effects are achieved. The 2D MOFs are prepared by taking a liquid / liquid interface as a deionized water / base oil interface, the synthesis condition is simple, the operation is easy, the cost is low, and the quality is controllable.

Description

technical field [0001] The invention relates to the technical field of preparation of nanomaterials, in particular to a preparation method of a 2D MOFs nanosheet-based lubricant. Background technique [0002] According to statistics, about one-third to one-half of the world's annual energy is consumed in various forms of friction and wear, and lubrication technology is one of the most effective ways to solve this problem. Zinc dialkyldithiophosphate (ZDDP) is no longer allowed to be used and added in large quantities as an anti-wear additive in lubricating oil because it contains harmful elements. Therefore, it is necessary to find a green lubricating oil additive that can replace it. With the rapid development of graphene research, other graphene-like 2D nanosheet materials such as boron nitride, graphite oxide, and transition metal sulfides have also attracted more and more attention [Chen Z, Liu XW, LiuYH, et al . Scientific Reports, 2015, 5:1-7. Kumari S, Sharma OP, Gus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06
CPCC10M169/041C10M2229/00
Inventor 程志林王菲菲刘赞
Owner YANGZHOU UNIV
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