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A kind of graphene-titanium diboride oxide composite and preparation method thereof

A technology of diboron oxide and graphene, applied in chemical instruments and methods, dyed organic silicon compound treatment, dyed low-molecular organic compound treatment, etc., can solve the problems of manufacturability of deteriorated composite materials, achieve low cost, simple process, Effect of reducing conductance loss

Inactive Publication Date: 2015-08-19
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In other words, in order to obtain a high dielectric constant, it is often necessary to add a high content of functional body, which will deteriorate the manufacturability of the composite material, and even other properties such as mechanical properties

Method used

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  • A kind of graphene-titanium diboride oxide composite and preparation method thereof
  • A kind of graphene-titanium diboride oxide composite and preparation method thereof
  • A kind of graphene-titanium diboride oxide composite and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] 1. Preparation of titanium diboride oxide

[0036] Under aerobic conditions, oxidize 10 g of titanium diboride with a particle size of less than 200 nanometers at 600 ° C for 10 minutes to obtain a crude product, disperse it in 200 mL of ethanol, stir it, filter it with suction, and dry it to obtain oxidized titanium diboride . The infrared spectrogram and X-ray diffraction figure of the prepared oxide titanium diboride are respectively referred to in the attached figure 1 and 2 .

[0037] 2. Preparation of aminated titanium diboride oxide

[0038] Disperse 10g of titanium diboride oxide into 50mL of hydrogen peroxide solution with a mass fraction of 35%, and react at 100°C for 5h; after the reaction, wash, filter with suction, and dry in a vacuum oven at 60°C for 12h to obtain Hydroxylated titanium diboride oxide;

[0039] Add 10 g of hydroxylated oxidized titanium diboride to 100 mL of absolute ethanol, mix well by ultrasonic, add 0.1 g of γ-aminopropyltriethoxys...

Embodiment 2

[0049] Preparation of Graphene-Titanium Diboride Oxide Composite

[0050] Weigh 1g of graphite oxide and disperse it in 600mL N,N-dimethylformamide, stir and sonicate for 1h to obtain a graphene oxide dispersion, add 0.025g of aminated titanium diboride oxide to the graphene oxide dispersion , ultrasonically stirred, reacted at 60°C for 12h, then added 10g L-ascorbic acid, raised the temperature of the reaction solution to 90°C and reacted for 24h, then filtered, washed, and dried to obtain a graphene-titanium diboride oxide composite , wherein the content of titanium diboride oxide is 0.05 times the mass of graphene. Its 25 thousand times magnified scanning electron microscope picture and X-ray diffraction picture are respectively shown in the attached image 3 and 4 .

Embodiment 3

[0052] Preparation of Graphene-Titanium Diboride Oxide Composite

[0053] Weigh 1g of graphite oxide and disperse it in 600mL N,N-dimethylformamide, stir and sonicate for 1h to obtain a graphene oxide dispersion, add 0.5g of aminated titanium diboride oxide to the graphene oxide dispersion , ultrasonically stirred, reacted at 60°C for 12h, then added 10g L-ascorbic acid, raised the temperature of the reaction solution to 90°C and reacted for 24h, then filtered, washed, and dried to obtain a graphene-titanium diboride oxide composite , wherein the content of titanium diboride oxide is the same as that of graphene. Its 25 thousand times magnified scanning electron microscope picture and X-ray diffraction picture are respectively shown in the attached image 3 and 4 .

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Abstract

The invention relates to a graphene-titanium diboride oxide compound and a preparation method thereof. The method comprises the steps of dispersing graphite oxide into N,N-dimethylformamide, adding titanium diboride oxide subjected to amination, then filtering, washing, and drying reactants to obtain a graphene surface-loaded titanium diboride oxide compound, wherein titanium diboride oxide is a core-shell structure of which the surface layer is an insulating layer namely titanium dioxide, and the core is a conductor namely titanium diboride. The compound provided by the invention can be used for forming a micro-capacitor structure which takes titanium diboride and graphene as electrodes, and takes titanium dioxide as a dielectric medium. By adding the compound into a polymer, the conductivity loss caused by conductor contact can be reduced, and the dielectric constant can be greatly increased. Meanwhile, the surface of the compound contains a great number of active functional groups such as amino groups, hydroxyl groups and the like, thus providing guarantees for modifying and preparing compound materials with good dispersibility. The preparation method of the compound has the characteristics of simple process, low cost and wide applicability.

Description

technical field [0001] The invention particularly relates to a graphene-titanium diboride oxide composite and a preparation method thereof, belonging to the technical field of inorganic nanomaterials. Background technique [0002] Graphene is made of carbon atoms with sp 2 The hybrid arrangement forms two-dimensional flakes with a honeycomb structure, which has huge electron mobility, high thermal conductivity, excellent mechanical strength, and large specific surface area. In recent years, graphene has attracted extensive attention due to its superior electrical, thermal, and mechanical properties, and has broad application potential in the fields of electronic devices, dielectric materials, and energy storage. [0003] At present, the main method of preparing high dielectric materials is to introduce conductors into polymers. Graphene with excellent electrical properties is often introduced into polymer matrices as conductors to prepare high dielectric constant composi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/46C09C3/06C09C3/12C09C3/08
Inventor 顾嫒娟王童星梁国正袁莉
Owner SUZHOU UNIV
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