A kind of method for preparing oil-soluble modified graphene

A graphene, oil-soluble technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as poor dispersion stability of graphene, and meet the needs of large-scale production, the process is simple, and the raw materials are easily available. Effect

Active Publication Date: 2021-11-12
重庆烯达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a kind of oil-soluble modified graphene for the above-mentioned deficiencies in the prior art to solve the problem of poor long-term dispersion stability of existing graphene in oily liquids

Method used

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  • A kind of method for preparing oil-soluble modified graphene
  • A kind of method for preparing oil-soluble modified graphene
  • A kind of method for preparing oil-soluble modified graphene

Examples

Experimental program
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Embodiment 1

[0031] Add 91 parts of deionized water to the beaker, weigh 1 part of thermally reduced graphene, 3 parts of sodium lauryl sulfate, add to the beaker, stir for 1 hour, and obtain emulsion A; add 5 parts of diphenyl peroxide to emulsion A Formyl, stirred at 60°C for 10 hours; filtered the reacted solution and washed with absolute ethanol until the filtrate was clear. The filter cake was taken out, dried, collected, and ground into powder to obtain oil-soluble modified graphene A.

Embodiment 2

[0033] Add 90 parts of deionized water to the beaker, weigh 2 parts of thermally reduced graphene, 3 parts of cetyltrimethylammonium bromide, add to the beaker, stir for 1 hour, and obtain emulsion B; add 5 parts of Dibenzoyl peroxide was stirred at 70°C for 11 hours; the reacted solution was filtered and washed with absolute ethanol until the filtrate was clear. The filter cake is taken out, dried, collected, and ground into powder to obtain oil-soluble modified graphene B.

Embodiment 3

[0035] Add 87 parts of deionized water to the beaker, weigh 5 parts of thermally reduced graphene, 3 parts of sodium lauryl sulfate, add to the beaker, stir for 1 hour, and obtain emulsion C; add 5 parts of dibenzoyl peroxide to emulsion C , and stirred at 65° C. for 10 hours; the reacted solution was filtered and washed with absolute ethanol until the filtrate was clear. The filter cake was taken out, dried, collected, and ground into powder to obtain oil-soluble modified graphene C.

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Abstract

The invention provides an oil-soluble modified graphene and a preparation method thereof, comprising the following components calculated in parts by weight: 1-5 parts of thermally reduced graphene, 2-10 parts of surfactant, 5-10 parts of initiator , 75‑92 parts deionized water. The oil-soluble modified graphene of the present invention is modified by organically modifying the central defects of thermally reduced graphene, forming emulsion micelles with graphene and surfactants in deionized water, and initiating at 60-80°C. The agent decomposes into free radicals and enters into the emulsion micelles, and then attacks the defects in the heat-reduced graphene to undergo an organic modification reaction. After the reaction, the emulsion is demulsified by absolute ethanol to obtain organically modified graphene. The present invention proposes The preparation process of the oil-soluble modified graphene is simple, the cost is low, and it is easy for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of graphene nanomaterials, in particular to an oil-soluble modified graphene and a preparation method thereof. Background technique [0002] Graphene has a unique two-dimensional structure and excellent performance, and is widely used in various fields. In application, it is often dispersed in the matrix by the liquid phase method, but due to the special large Π bond conjugated electronic structure of graphene, there is a large van der Waals force between the layers, and the van der Waals force between the layers will inevitably make Graphene sheets re-agglomerate and stack, and it is difficult to disperse to form a stable solution. [0003] In the field of mechanical lubrication, graphene is favored as a nano-scale lubricating oil solid additive. Its unique two-dimensional sheet structure can cooperate with the oil film between friction pairs to form a layer with stronger bearing capacity and anti-friction effect. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/194
CPCC01B32/194
Inventor 袁小亚郑旭煦丁隆新
Owner 重庆烯达科技有限公司
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