Dopamine surface modified two-dimensional nano material and preparation method thereof

A technology of two-dimensional nanomaterials and surface modification, which is applied in fibrous fillers, dyed low-molecular organic compound treatment, dyed high-molecular organic compound treatment, etc., to achieve great scientific significance and increase compatibility

Inactive Publication Date: 2017-09-29
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the bottleneck of current research is how to impr

Method used

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Experimental program
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Effect test

Embodiment 1

[0020] First, 1.2114 g of tris was dissolved in 150 mL of deionized water, adjusted to pH=8.5 with dilute hydrochloric acid (1M), and stirred for 20 min. Then, 1 g of self-made molybdenum disulfide powder and 50 mL of pure ethanol were added to the above system for ultrasonic dispersion for 60 min. Finally, 0.4 g of dopamine hydrochloride was weighed and added to the mixed liquid, stirred rapidly for 10 minutes, controlled the temperature of the system at about 20° C., and reacted with stirring for 12 hours. Stop the reaction and centrifuge to obtain a black solid powder, which is washed three times with deionized water and ethanol, and freeze-dried. The obtained black solid powder is the two-dimensional molybdenum disulfide nanomaterial wrapped by polydopamine.

Embodiment 2

[0022] First, 2 g of tris was dissolved in 250 mL of deionized water, adjusted to pH=8.5 with dilute hydrochloric acid (1M), and stirred for 20 min. Then, 1 g of boron nitride white powder after ultrasonic stripping and 50 mL of pure ethanol were added to the above system for ultrasonic dispersion for 40 min. Finally, 0.8 g of dopamine hydrochloride was weighed and added to the mixed liquid, stirred rapidly for 10 minutes, controlled the temperature of the system at about 20° C., and reacted with stirring for 15 hours. Stop the reaction and centrifuge to obtain a black solid powder, which is washed three times with deionized water and ethanol, and freeze-dried. The obtained black solid powder is the polydopamine-wrapped boron nitride two-dimensional nanomaterial.

Embodiment 3

[0024] First, 1.2114 g of tris was dissolved in 150 mL of deionized water, adjusted to pH=8.5 with dilute hydrochloric acid (1M), and stirred for 20 min. Then, 0.8 g of homemade titanium carbide gray powder and 50 mL of pure ethanol were added to the above system for ultrasonic dispersion for 60 min. Finally, 0.4 g of dopamine hydrochloride was weighed and added to the mixed liquid, stirred rapidly for 10 minutes, controlled the temperature of the system at about 20° C., and reacted with stirring for 12 hours. Stop the reaction and centrifuge to obtain a black solid powder, which is washed three times with deionized water and ethanol, and freeze-dried. The obtained black solid powder is the two-dimensional titanium carbide nanomaterial wrapped by polydopamine.

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Abstract

The invention relates to a dopamine surface-modified two-dimensional nanometer material and a preparation method. A two-dimensional nanometer material wrapped with polydopamine is prepared through a one-step reaction. The invention solves the problem of poor dispersion of traditional two-dimensional nanometer materials in interstitium (water, organic matter). This characteristic preparation method provides a method for modifying the surface of two-dimensional nanomaterials with dopamine. After the surface of two-dimensional nanomaterials is modified by dopamine, functional groups (hydroxyl and amino groups) are successfully introduced. Compatibility between matter and two-dimensional nanomaterials. Therefore, this invention has great scientific significance, and has great practical application value in the production of friction-resistant composite materials, lubricating grease, and heat-conducting composite materials.

Description

technical field [0001] The invention belongs to the technical field of composite materials and fine chemicals, and relates to a dopamine surface-modified two-dimensional nanometer material and a preparation method. Background technique [0002] Two-dimensional nanomaterials (molybdenum disulfide, tungsten disulfide, molybdenum diselenide, tungsten diselenide, titanium carbide, boron nitride) have always been a research hotspot for researchers due to their unique structures. Excellent performance in friction resistance, electromagnetic shielding and other fields. [0003] Many researchers at home and abroad know that two-dimensional nanomaterials have a graphene-like structure and exhibit excellent properties in terms of friction. Therefore, many researchers have combined two-dimensional nanomaterials with polymers and resins to prepare many composite materials, which show excellent performance in friction resistance. However, since two-dimensional nanomaterials are inorgan...

Claims

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Application Information

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IPC IPC(8): C09C3/08C09C1/00C09C1/36C09C1/46C09C3/10
CPCC09C3/08C09C1/00C09C1/0003C09C1/36C09C1/46C09C3/10
Inventor 颜红侠张卫东齐暑华
Owner NORTHWESTERN POLYTECHNICAL UNIV
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