Molybdenum disulfide and titanium dioxide-modified ferroferric oxide nanometer composite material

Abstract

The invention belongs to the technical field of functional composite materials and relates to a preparation technology of a shear thinning rheological property material, in particular to a molybdenumdisulfide and titanium dioxide-modified ferroferric oxide nanometer composite material. The molybdenum disulfide and titanium dioxide-modified ferroferric oxide nanometer composite material comprisesthe following raw materials in part by weight: 3-8 parts of ferric chloride hexahydrate, 5-15 parts of anhydrous sodium acetate, 0.1-1 part of sodium citrate dihydrate, 0.1-0.5 part of ammonium molybdate tetrahydrate, 0.5-1.0 part of thiourea, 0.5-2.0 parts of tetrabutyl titanate and 100-150 parts of ethylene glycol; titanium dioxide and molybdenum disulfide have excellent electro-rheological properties and can generate higher shear yield stress under the action of an electric field; meanwhile, magnetic ferroferric oxide has higher magnetic saturation degree and can generate higher shear yieldstress under the action of a magnetic field; the molybdenum disulfide has excellent lubricating property; therefore, the molybdenum disulfide and titanium dioxide-modified ferroferric oxide nanometercomposite material is low in cost, clean, non-toxic and shorter in reaction time and has wide application value.

Description

Technical field: [0001] The invention belongs to the technical field of functional composite materials, and relates to a preparation technology of a material with shear-thinning rheological properties; in particular, it relates to a molybdenum disulfide and titanium dioxide modified iron tetroxide nanocomposite material. Background technique: [0002] Electrorheological fluid is a new type of smart material, generally composed of polarizable particles dispersed in an insulating medium. Under the action of the electric field, the dispersed particles are polarized to form a fibrous structure, and the shear stress gradually increases with the increase of the electric field, and when the electric field is removed, the fibrous structure will rapidly return to a disordered state; the magnetic flow Electrorheological fluids are intelligent fluids controlled by magnetic fields similar to electrorheological fluids. Due to the low yield stress and high leakage current density of ER f...

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Problems solved by technology

Due to the low yield stress and high leakage current density of electrorheological fluid, it will be broken down at a low electric field strength, which seriously limits the wide application of electrorheological fluid.

For this magnetorheological fluid, there is a large density difference between the particles and the carrier, which is prone to sedimentation, which severely limits the commercial application of magnetorheological fluid.

Due to the complex composition of ERFs and MRFs, there is still a lack of effective mechanisms to describe the ERF and MRF effects

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