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Amination hexagonal boron nitride as well as preparation method and application thereof

A technology of hexagonal boron nitride and amination, which is applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, fibrous fillers, etc., can solve problems such as poor dispersion effect, poor storage stability, and restrictions on the application of boron nitride. Achieve the effects of simple handling, enhanced tensile strength, and simple operation

Inactive Publication Date: 2019-05-28
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the modification and dispersion methods of boron nitride refer to the modification and dispersion methods of graphene, many of which are dispersed by adding surfactants, resulting in poor dispersion effect and poor storage stability, which restrict boron nitride. Applications

Method used

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  • Amination hexagonal boron nitride as well as preparation method and application thereof
  • Amination hexagonal boron nitride as well as preparation method and application thereof
  • Amination hexagonal boron nitride as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1: Preparation of aminated hexagonal boron nitride

[0033] 1) Take 2g of Aladdin Reagent Company’s hexagonal boron nitride powder with a specification of 1-2 μm and place it in a porcelain boat, put it into a tube furnace, vacuumize it, fill it with argon gas for protection, and place a container full of it in the upwind direction. The porcelain boat of ionized water is used to provide a water vapor atmosphere, heated to 900 ° C, kept for 3 hours, and cooled to room temperature to obtain preliminary hydroxylated boron nitride powder;

[0034] Disperse the powder obtained above in water and ultrasonically treat it for 5 minutes, then centrifuge at a speed of 1000-1200 rpm for 30 minutes to remove large particles and obtain a suspension;

[0035] drying the centrifuged upper three-quarters of the suspension at 60-80°C to remove water for further drying, and freeze-drying in a freeze dryer at a low temperature to obtain hydroxylated modified boron nitride powde...

Embodiment 2

[0038] Embodiment 2: Preparation of aminated hexagonal boron nitride

[0039] 1) Take 2g of Aladdin Reagent Company’s hexagonal boron nitride powder with a specification of 1-2 μm and place it in a porcelain boat, put it into a tube furnace, vacuumize it, fill it with argon gas for protection, and place a container full of it in the upwind direction. The porcelain boat of ionized water is used to provide a water vapor atmosphere, heated to 950 ° C, kept for 2.5 hours, cooled to room temperature, and obtained preliminary hydroxylated boron nitride powder;

[0040] Disperse the powder obtained above in water and ultrasonically treat it for 5 minutes, then centrifuge at a speed of 1000-1200 rpm for 30 minutes to remove large particles and obtain a suspension;

[0041] drying the centrifuged upper three-quarters of the suspension at 60-80°C to remove water for further drying, and freeze-drying in a freeze dryer at a low temperature to obtain hydroxylated modified boron nitride pow...

Embodiment 3

[0044] Embodiment 3: Preparation of aminated hexagonal boron nitride

[0045] 1) Take 2g of Aladdin Reagent Company’s hexagonal boron nitride powder with a specification of 1-2 μm and place it in a porcelain boat, put it into a tube furnace, vacuumize it, fill it with argon gas for protection, and place a container full of it in the upwind direction. The porcelain boat of ionized water is used to provide a water vapor atmosphere, heated to 1000 ° C, kept for 2 hours, cooled to room temperature, and obtained preliminary hydroxylated boron nitride powder;

[0046] Disperse the powder obtained above in water and ultrasonically treat it for 5 minutes, then centrifuge at a speed of 1000-1200 rpm for 30 minutes to remove large particles and obtain a suspension;

[0047] drying the centrifuged upper three-quarters of the suspension at 60-80°C to remove water for further drying, and freeze-drying in a freeze dryer at a low temperature to obtain hydroxylated modified boron nitride powder...

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Abstract

The invention provides amination hexagonal boron nitride as well as a preparation method and application thereof. Through amination modification and Pi-Pi electron interaction, hexagonal boron nitridedispersion liquid with dispersion uniformity and storage stability is obtained. The method comprises the following steps that commercial hexagonal boron nitride powder is calcined in a tubular furnace in vapor atmosphere to obtain hydroxylated modified boron nitride; the hydroxylated modified boron nitride power and excessive toluene diisocynate react to obtain an intermediate product; then, theintermediate product and excessive water react to obtain the amination hexagonal boron nitride. The operation of the method provided by the invention is simple; the reactant treatment is simple; the storage of the prepared amination hexagonal boron nitride is stable.

Description

technical field [0001] The invention belongs to the field of two-dimensional nanometer materials, and in particular relates to an aminated hexagonal boron nitride and its preparation method and application. Background technique [0002] Since the discovery of graphene, two-dimensional nanomaterials have gradually entered people's field of vision, such as hexagonal boron nitride, transition metal dichalcogenides, black phosphorus, and transition metal carbides. Among them, hexagonal boron nitride is a common industrial product, which is often used as a lubricant and a release agent. On the one hand, because it is similar to graphene in structure, hexagonal boron nitride has some properties similar to graphene, such as along the base surface Anisotropy and high mechanical strength and thermal conductivity, as well as good lubricity, etc.; on the other hand, the unique structural characteristics of hexagonal boron nitride (h-BN) endow it with many other important electrical, op...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/04C09C3/06C09C3/08C08G18/75C08G18/66C08G18/48C08G18/32C08G18/34C08K9/04C08K3/38
Inventor 罗伟昂戴李宗刘惠祥曹莹张泓许一婷曾碧榕袁丛辉陈国荣
Owner XIAMEN UNIV
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