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Preparation method and device of micro-nano core-shell material

A micro-nano-level, core-shell technology, used in transportation and packaging, nanotechnology, metal processing equipment, etc., can solve problems such as easy agglomeration, unfavorable continuous production, and difficult particle size control.

Active Publication Date: 2019-09-27
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a method for preparing micro-nano-scale core-shell materials and a device for preparing micro-nano-scale core-shell materials, which are used to solve the problem that particle size is difficult to control and easy to agglomerate in the continuous preparation of core-shell materials. , which is not conducive to the realization of continuous production

Method used

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  • Preparation method and device of micro-nano core-shell material

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Effect test

Embodiment 1

[0068] The first container holds ethanol solution containing nanometer copper particles, and the second container holds silver ammonia solution. The mixed gas of nitrogen and argon is passed into the turbulence forming tube, and its Reynolds number reaches 4000. The ethanol solution and silver ammonia solution containing nano-copper particles are sucked into the turbulence forming tube under the negative pressure generated by the high flow rate, and the turbulence forming tube The fluid forms a turbulent flow and is fully mixed to carry out a replacement reaction. Silver is deposited on the surface of the nano-copper particles. The collection container is pumped with a negative pressure of 0.05 MPa in advance to atomize and disperse the micro-nano core-shell material solution when it enters, and deposit on the inner wall of the collection container. Finally, the micro-nano-scale core-shell material solution is collected on the inner wall of the collection container, that is, th...

Embodiment 2

[0070] The first container holds ethanol solution containing nanometer copper particles, and the second container holds silver potassium cyanide solution. The mixed gas of nitrogen and argon is passed into the turbulence forming tube, and its Reynolds number reaches 4000. The ethanol solution and silver ammonia solution containing nano-copper particles are sucked into the turbulence forming tube under the negative pressure generated by the high flow rate, and the turbulence forming tube The fluid forms a turbulent flow and is fully mixed to carry out a replacement reaction. Silver is deposited on the surface of the nano-copper particles. The collection container is pumped with a negative pressure of 0.05 MPa in advance to atomize and disperse the micro-nano core-shell material solution when it enters, and deposit on the inner wall of the collection container. Finally, the micro-nano-scale core-shell material solution is collected on the inner wall of the collection container, t...

Embodiment 3

[0072] The first container holds a propanol solution containing nanometer copper particles, and the second container holds a silver ammonia solution. The mixed gas of nitrogen and argon is passed into the turbulence forming tube, and its Reynolds number reaches 5000. The ethanol solution and silver ammonia solution containing nano-copper particles are sucked into the turbulence forming tube under the negative pressure generated by the high flow rate, and the turbulence forming tube The fluid forms a turbulent flow and is fully mixed to carry out a replacement reaction. Silver is deposited on the surface of the nano-copper particles. The collection container is pumped with a negative pressure of 0.05 MPa in advance to atomize and disperse the micro-nano core-shell material solution when it enters, and deposit on the inner wall of the collection container. Finally, the micro-nano-scale core-shell material solution is collected on the inner wall of the collection container, that i...

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Abstract

The invention belongs to the technical field of preparation of micro-nano materials, and particularly relates to a preparation method and device of a micro-nano core-shell material. The preparation method of the micro-nano grade core-shell material comprises the step that a solution containing micro-nano grade metal particles and a metal ion solution are mixed under the condition that the Reynolds number is not less than 2300, and then dispersed through an atomization method, the solution containing the micro-nano grade metal particles makes full contact with the metal ion solution, metal ions form a metal coating layer on the surface of the micro-nano grade metal particles, and a dispersed micro-nano grade core-shell material is obtained. The preparation method can control the dispersity of the core-shell material, realize continuous production, and control the particle size of the micro-nano core-shell material by adjusting the particle size of the micro-nano metal particles and the concentration of the metal ion solution.

Description

technical field [0001] The invention belongs to the technical field of preparation of micro-nano-scale materials, and in particular relates to a preparation method of micro-nano-scale core-shell materials and a device for preparing micro-nano-scale core-shell materials. Background technique [0002] The core-shell structure of core-shell materials is an ordered assembly structure formed by covering another material with one material through chemical bonds or other forces. The shell coated on the outside of the particle can change the surface properties of the core material and endow the particle with optical, electrical, magnetic, and catalytic properties, such as changing the surface charge of the particle, endowing the particle with functionality, enhancing surface reactivity, and improving particle stability. [0003] Core-shell materials generally consist of a central core and an outer shell. Core-shell materials can be polymers, inorganic substances and metals. As cor...

Claims

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Application Information

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IPC IPC(8): B22F1/02B82Y40/00
CPCB82Y40/00B22F1/07B22F1/17
Inventor 杨冠南王鹏宇陈梓源徐广东崔成强张昱
Owner GUANGDONG UNIV OF TECH