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Preparation method for composite material with micro/nano core-shell structure

A nano-core-shell and composite material technology, applied in metal processing equipment, transportation and packaging, etc., can solve problems such as cumbersome process, and achieve the effects of environmental protection, non-toxic reagents, short processing time, and dense coating

Active Publication Date: 2017-07-07
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For metal / metal oxide core-shell structure materials, in order to achieve a uniform and dense coating effect on the shell material, it is generally necessary to use sol-gel method, template method, etc., but the required process is relatively cumbersome.

Method used

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  • Preparation method for composite material with micro/nano core-shell structure
  • Preparation method for composite material with micro/nano core-shell structure

Examples

Experimental program
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Effect test

Embodiment 1

[0040] (1) Take by weighing 0.1g tannic acid solid, dissolve in 2.5ml water, prepare the tannic acid aqueous solution that concentration is 40mg / ml;

[0041] (2) Take by weighing 0.025g ferric chloride solid, be dissolved in 2.5ml water, the preparation concentration is the ferric chloride aqueous solution of 10mg / ml;

[0042] (3) Weigh 1g such as figure 1 Add the aluminum powder shown in the tannic acid aqueous solution and stir rapidly, the stirring speed is 500r / min, the stirring time is 100s, the solution temperature is 70°C, after the stirring is completed, filter and separate the metal particles; weigh 1g of ferric oxide powder and add trichloride Stir rapidly in the aqueous iron solution, the stirring rate is 500r / min, the stirring time is 100s, the solution temperature is 70°C, and the metal oxide particles are separated by filtration after the stirring is completed;

[0043] (4) Disperse the pretreated aluminum powder particles and ferric oxide powder particles in wa...

Embodiment 2

[0045] (1) Weigh 0.1g dopamine solid, dissolve it in 20ml water, and prepare a dopamine aqueous solution with a concentration of 5mg / ml;

[0046] (2) Take by weighing 0.1g ferric chloride solid, be dissolved in 20ml water, prepare the ferric chloride aqueous solution that concentration is 5mg / ml;

[0047](3) Weigh 2g of copper powder and add it to the dopamine aqueous solution for rapid stirring, the stirring rate is 600r / min, the stirring time is 300s, and the solution temperature is 60°C. After the stirring is completed, the copper powder particles are separated by filtration; Stir rapidly in the ferric chloride aqueous solution, the stirring rate is 600r / min, the stirring time is 300s, the solution temperature is 50°C, after the stirring is completed, filter and separate the ferric oxide particles;

[0048] (4) disperse the pretreated copper powder and ferric oxide powder in the water and stir rapidly in the water, the stirring rate is 400r / min, add dropwise the potassium h...

Embodiment 3

[0050] (1) Take by weighing 0.1g tea polyphenol solid, dissolve in 2.5ml water, prepare the tea polyphenol aqueous solution that concentration is 40mg / ml;

[0051] (2) Take by weighing 0.025g ferric chloride solid, be dissolved in 2.5ml water, the preparation concentration is the ferric chloride aqueous solution of 10mg / ml;

[0052] (3) Add 1g of copper oxide powder into the tea polyphenol aqueous solution and stir quickly, the stirring rate is 400r / min, the stirring time is 400s, the solution temperature is 50°C, after the stirring is completed, filter and separate the copper oxide particles; weigh 1g of aluminum powder and add trichloro Stir rapidly in the ferric chloride aqueous solution, the stirring rate is 400r / min, the stirring time is 400s, the solution temperature is 50°C, after the stirring is completed, filter and separate the aluminum powder particles;

[0053] (4) Disperse the pretreated aluminum powder and copper oxide powder in the water and stir rapidly at a st...

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Abstract

The invention discloses a preparation method for a composite material with a micro / nano core-shell structure. The method comprises the step of compounding micron-scale metal particles with nano-scale metal oxide particles to form the composite material with the micro / nano core-shell structure through the coordination effect of polyphenol hydroxyl compounds and a ferric ion solution, wherein the micron-scale metal particles are aluminium powder, iron powder, copper powder, nickel powder, tungsten powder or zinc powder with a particle size ranging from 1 [mu]m to 1000 [mu]m, and the nano-scale metal oxide particles are aluminium oxide, ferric oxide, ferroferric oxide, ferrous oxide, copper oxide, tungsten trioxide, nickel oxide or zinc oxide with a particle size ranging from 1nm to 1000nm. According to the preparation method disclosed by the invention, a shell material achieves a uniform and compact coating effect; and moreover, the preparation method is short in treatment time, a reagent is environmentally friendly and free of toxicity, and a post-treatment process is simple and convenient.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a method for preparing a micro / nano core-shell structure composite material. Background technique [0002] Core-shell composite particles have special size and shape because the surface is covered with nanoparticles with different properties from the core material, and exhibit better optical, electrical, magnetic and catalytic properties than single-component materials. Therefore, their preparation and application have been in recent years Developing rapidly, core-shell structure micro / nano materials have special functions that other materials do not have. The composition and structure of these particles can be artificially designed and controllably prepared to meet specific requirements. They are used in catalysts, medicine, bioengineering, etc. All aspects have important application value. [0003] The preparation methods of core-shell composite materials currently used gene...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/02
CPCB22F9/02B22F1/07
Inventor 谢虓祝青肖春李尚斌
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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