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A kind of preparation method of mxene/ps nanocomposite electrorheological material

A nano-composite, electrorheological technology, applied in lubricating compositions, additives, petroleum industry, etc., can solve the problems of slow response time, poor particle suspension stability, high leakage current density, etc., and achieve short reaction time and excellent electrorheological properties. , the effect of high shear stress

Inactive Publication Date: 2020-12-15
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, electrorheological fluids still have disadvantages such as poor particle suspension stability, large leakage current density, and slow response time, which cannot meet the needs of engineering applications.

Method used

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  • A kind of preparation method of mxene/ps nanocomposite electrorheological material
  • A kind of preparation method of mxene/ps nanocomposite electrorheological material
  • A kind of preparation method of mxene/ps nanocomposite electrorheological material

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Embodiment 1

[0014] In this embodiment, the combination of oxidized Mxene and polystyrene spheres is selected, and the specific preparation process is:

[0015] (1) Preparation of etching Mxene: first weigh 5g of raw material Ti with an electronic balance 3 AlC 2 , and then use a plastic measuring cylinder to measure 75ml of hydrofluoric acid and place it in a plastic bottle, and put the raw material Ti 3 AlC 2 Slowly added to hydrofluoric acid, stirred at 250rmp for 72h, washed with deionized water until neutral, and freeze-dried to obtain Mxene after etching;

[0016] (2) Preparation of oxidized Mxene: First weigh 0.7g of etched Mxene with an electronic balance and place it in a 100ml beaker, then use a measuring cylinder to measure 70ml of UP water and place it in the beaker, crush the cells for 30min, and then place 1.5ml of UP water into the beaker. Hydrogen oxide was added to the above solution, dispersed evenly, the above mixed solution was transferred to a 200ml reactor, and hea...

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Abstract

The invention belongs to the technical field of nano intelligent composite materials, and discloses a preparation technology of an electrorheological material. A novel nano dispersion stabilizer is obtained by etching and oxidizing Mxene, and an Mxene / polystyrene composite material is obtained by one step through a Pickering emulsion polymerization method. The preparation technology comprises preparation of the etched Mxene, preparation of the oxidized Mxene and mixing preparation. The preparation process is simple and is convenient to operate; the oxidized Mxene is relatively high in dielectric performance; compared with pure titanium dioxide, the oxidized Mxene has conductivity meeting electrorheology due to a C layer, so that the oxidized Mxene is used as a dispersion stabilizer; oxidized Mxene / PS is synthesized through an emulsion polymerization method; under the action of an external electric field, the electrorheological material is relatively high in shear stress and relativelylow in leakage current density and excellent in electrorheological effect; and raw materials used in an experiment are simple and easy to obtain, so that the preparation technology is low in cost, clean, nontoxic and relatively short in reaction time and has a wide application value.

Description

Technical field: [0001] The invention belongs to the technical field of nano-intelligent composite materials, and discloses a preparation technology of a material with electrorheological properties. A novel nano-dispersion stabilizer is obtained by etching and oxidizing Mxene, and the Pickering (Pickering) emulsion polymerization method is used One-step preparation to obtain Mxene / polystyrene (PS) composites. Background technique: [0002] Electrorheological fluid is a smart material controlled by an electric field. It consists of polarized particles dispersed in insulating oil (such as dimethyl silicone oil, hydrocarbon oil, mineral oil, corn oil, etc.), and the effect of polarized particles on an external electric field A chain structure is formed, and the shear stress increases with the increase of the applied electric field. By controlling the external electric field, the electrorheological fluid can be converted from liquid to solid state, and the rheological and viscoe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M161/00C10N40/04
CPCC10M161/00C10M2201/062C10M2205/04C10N2040/04
Inventor 张文玲刘迎丹郑雯
Owner QINGDAO UNIV
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