Application of lubricating oil detergent dispersant in preparation of graphene

A technology of cleansing and dispersing agent and lubricating oil, which is applied in the direction of lubricating compositions, etc., to achieve the effects of large volume and specific surface area, enhanced oxidation resistance and high quality

Pending Publication Date: 2020-04-28
中科悦达(上海)材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no prior art discloses that this type of lubricating oil is used as a dispersant in the process of preparing graphene by mechanical exfoliation.

Method used

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  • Application of lubricating oil detergent dispersant in preparation of graphene
  • Application of lubricating oil detergent dispersant in preparation of graphene
  • Application of lubricating oil detergent dispersant in preparation of graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Put 5g of T154 emulsion (20%) into 955ml of deionized water, stir mechanically at room temperature for 20min, and then drop into 40g of expanded graphite with an expansion multiple of 200 times (the number of mesh is 325, and the model is 95-99 fixed carbon-200). Stir for 30 min to obtain an aqueous dispersion of expanded graphite.

[0040] After the above-mentioned expanded graphite aqueous dispersion was treated with high-pressure homogenization equipment for 7 hours (the temperature of the high-pressure homogenization treatment was room temperature, and the rotation speed was 2000 rpm), the graphene aqueous dispersion was obtained, and the graphene for lubricating oil was obtained by spray drying (120° C.).

[0041] Obtained graphene is observed with a scanning electron microscope and a transmission electron microscope, and it is obtained as follows: figure 1 The scanning electron microscope image (SEM) shown in Figure 2 and the transmission electron microscope image...

Embodiment 2

[0043] Put 5g of T154 emulsion (20%) into 955ml of deionized water, stir mechanically at room temperature for 20min, then drop into 40g of expanded graphite with an expansion factor of 300 times (the number of meshes is 325, and the model is 95-99 fixed carbon-300). Stir for 30 min to obtain an aqueous dispersion of expanded graphite.

[0044] The above-mentioned expanded graphite aqueous dispersion was treated with high-pressure homogenization equipment for 7 hours (the temperature of the high-pressure homogenization treatment was room temperature, and the rotation speed was 2000 rpm) to obtain a graphene aqueous dispersion, which was spray-dried (150° C.) to obtain graphene for lubricating oil.

[0045] Obtained graphene is observed by scanning electron microscope and transmission electron microscope, and the results of scanning electron microscope and transmission electron microscope show that the radial size of graphene obtained by this method is less than 5 μm, and the ave...

Embodiment 3

[0047] Put 6g of T151 emulsion (20%) into 955ml of deionized water, stir mechanically at room temperature for 20min, then drop into 40g of expanded graphite with an expansion factor of 300 times (the number of meshes is 325, and the model is 95-99 fixed carbon-300), at room temperature Stir for 30 min to obtain an aqueous dispersion of expanded graphite.

[0048] The above-mentioned expanded graphite aqueous dispersion was treated with sand milling equipment for 7 hours (the temperature of the sand milling equipment was room temperature, and the rotation speed was 2000 rpm) to obtain a graphene aqueous dispersion, which was spray-dried (140°C) to obtain graphene for lubricating oil.

[0049] The obtained graphene was observed by scanning electron microscope and transmission electron microscope, and the results of scanning electron microscope and transmission electron microscope showed that the radial size of graphene obtained by this method was less than 5 μm, and the average n...

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Abstract

The invention relates to application of a lubricating oil detergent dispersant in preparation of graphene and a method for preparing graphene for lubricating oil through mechanical stripping. The preparation method comprises the following steps: S1, adding a lubricating oil detergent dispersant into water, and mechanically stirring to obtain a mixed solution; S2, adding expanded graphite into themixed solution, and mechanically stirring to obtain expanded graphite water-based dispersion liquid; S3, mechanically stripping the expanded graphite water-based dispersion liquid to obtain graphene water-based dispersion liquid; and S4, obtaining the graphene for lubricating oil from the graphene water-based dispersion liquid. The lubricating oil detergent dispersant is used as a dispersant of expanded graphite, graphene for lubricating oil is prepared through mechanical stripping, and the method has the characteristics of high efficiency, low cost, high product yield and high product quality.

Description

technical field [0001] The invention relates to the preparation of graphene materials, more specifically to the use of a lubricating oil detergent and dispersant in preparing graphene and a method for preparing graphene for lubricating oil by mechanical exfoliation. Background technique [0002] As a newly developed two-dimensional material, graphene has many excellent properties and has been widely developed and applied in the fields of composite materials, textiles, sensing, and energy. However, the lack of high-efficiency and high-quality preparation of graphene limits the further development of graphene materials, and how to efficiently prepare high-quality graphene has become a research hotspot. [0003] Among the existing methods, the chemical vapor deposition (CVD) method is a method capable of preparing high-quality single-layer graphene, but the higher preparation cost makes it difficult for the CVD method to produce graphene in batches; the oxidation-reduction meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02
CPCC10M173/02C10M2201/0413C10M2217/024
Inventor 丁古巧张明杰周久顺冯天英颜柱梁猛李彦宏
Owner 中科悦达(上海)材料科技有限公司
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