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A boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler and its preparation method and use

A technology of nano-titanium dioxide and core-shell structure, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., to achieve the effect of reducing the mean free path and improving electrical properties

Active Publication Date: 2021-05-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, no attempt has been reported to use particles with a core-shell structure formed by the interaction of boron nitride nanosheets and nano-titanium dioxide as fillers to improve polymer properties.

Method used

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  • A boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler and its preparation method and use
  • A boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler and its preparation method and use
  • A boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler and its preparation method and use

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler, comprising the following steps:

[0037] 1) Put the boron nitride nanosheets and nano-titanium dioxide in a 5:1 ratio in a drying oven at 90°C for 12 hours;

[0038] 2) Weigh 1g of boron nitride nanosheets and put them into a beaker, add 200ml of absolute ethanol to the beaker, so that the content of boron nitride nanosheets in the suspension is 5mg / ml, and stir the mixture with an electric mixer at a speed of 2000rpm. Suspension for five minutes;

[0039] 3) Add 0.2g nano-titanium dioxide to the suspension obtained in step 2), keep the rotating speed of the electric mixer constant, and turn on the ultrasonic cleaner so that the boron nitride nanosheets and nano-titanium dioxide are fully dispersed in ethanol;

[0040] 4) After 120 minutes, evaporate the ethanol to dryness in an environment of 90°C, and dry the boron nitride nanosheets and nano-titanium dioxide to o...

Embodiment 2

[0045] A method for preparing boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler, comprising the following steps:

[0046] 1) Put the boron nitride nanosheets and nano-titanium dioxide in a 4:1 ratio in a drying oven at 90°C for 12 hours;

[0047] 2) Weigh 1g of boron nitride nanosheets and put them into a beaker, add 200ml of absolute ethanol to the beaker, so that the content of boron nitride nanosheets in the suspension is 5mg / ml, and stir the mixture with an electric mixer at a speed of 2000rpm. Suspension for five minutes;

[0048] 3) Add 0.25g nano-titanium dioxide to the suspension obtained in step 2), keep the rotating speed of the electric mixer constant, and open the ultrasonic cleaning machine so that the boron nitride nanosheets and nano-titanium dioxide are fully dispersed in ethanol;

[0049] 4) After 120 minutes, evaporate the ethanol to dryness in an environment of 90°C, and dry the boron nitride nanosheets and nano-titanium dioxi...

Embodiment 3

[0054] A method for preparing boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler, comprising the following steps:

[0055]1) Put boron nitride nanosheets and nano-titanium dioxide in a 7:1 ratio in a drying oven at 90°C for 12 hours;

[0056] 2) Weigh 1g of boron nitride nanosheets and put them into a beaker, add 200ml of absolute ethanol to the beaker, so that the content of boron nitride nanosheets in the suspension is 5mg / ml, and stir the mixture with an electric mixer at a speed of 2000rpm. Suspension for five minutes;

[0057] 3) Add 0.14g nano-titanium dioxide to the suspension obtained in step 2), keep the rotating speed of the electric mixer constant, and open the ultrasonic cleaner so that the boron nitride nanosheets and nano-titanium dioxide are fully dispersed in ethanol;

[0058] 4) After 120 minutes, evaporate the ethanol to dryness in an environment of 90°C, and dry the boron nitride nanosheets and nano-titanium dioxide to obtain a...

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Abstract

The invention discloses a preparation method and application of a boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler for polymer dielectrics. The composite material includes polypropylene, a coupling agent, and boron nitride with a core-shell structure The nanometer sheet covers the nanometer titanium dioxide particle, and the invention discloses a preparation method of the composite filling particle, which is prepared by mixing the boron nitride nanosheet and the titanium dioxide through a series of operations. The polypropylene matrix exhibits high electrical performance after being doped with the above-mentioned high-performance composite filler particles having a core-shell structure, and has important application value.

Description

technical field [0001] The invention relates to the field of composite materials with a core-shell structure, in particular to a boron nitride nanosheet-coated nano-titanium dioxide core-shell structure filler, a preparation method and an application thereof. Background technique [0002] A composite material with a core-shell structure is a hybrid formed by covering another material with one material through chemical bonds or other interactions. This structure can combine the advantages of various nanomaterials to achieve multifunctionality of the material. . [0003] Boron nitride nanosheets, a material with a two-dimensional sheet structure, are important in the fields of optics, electronics, sensors, and energy storage materials due to their high specific surface area, high temperature resistance, wide band gap, excellent thermal conductivity, and unique electrical properties. role. [0004] In order to respond to the development of high-voltage direct current transmis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/04C09C3/06C09C3/08C09C3/12C08K9/10C08K9/06C08K3/22C08L23/12
CPCC01P2004/03C08K3/22C08K9/06C08K9/10C08K2003/2241C08K2201/003C08K2201/011C09C1/3623C09C1/363C09C1/3661C09C1/3669C09C1/3684C09C1/3692C09C3/006C09C3/041C09C3/043C09C3/063C09C3/08C09C3/12C08L23/12
Inventor 李忠磊范铭升杜伯学
Owner TIANJIN UNIV
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