Method for dispersing liquid metal to micro nano-particles

A technology of micro-nano particles and liquid metal, which is applied in the direction of nanotechnology, can solve the problems of easy agglomeration of liquid metal, achieve large-scale dispersion and realize the effect of large-scale production

Active Publication Date: 2015-12-02
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that liquid metal is easy to agglomerate, the present

Method used

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  • Method for dispersing liquid metal to micro nano-particles
  • Method for dispersing liquid metal to micro nano-particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment is a method for dispersing liquid metal into micro-nano particles, which specifically includes the following steps:

[0025] (1) Take 100g of DMF and place it in a 250ml beaker, add a magnet and place it on a magnetic stirrer, take 10g of PVDF powder and pour it into the beaker, turn on the magnetic stirrer and stir for 30min to obtain a polymer solution;

[0026] (2) 4g liquid metal (Ga 75.5 In 24.5 ) into the polymer solution obtained in step (1), and continue to stir for 6h, the liquid metal can be dispersed into micro-nano particles;

[0027] In step (1) and step (2), the stirring speed is 300-500 rpm.

[0028] In the present embodiment, step (2) finally obtains the liquid metal solution ink that can be used for printing on paper, and its macroscopic view is as follows figure 1 Shown; Electron microscope scanning image of liquid metal micro-nanoparticles in liquid metal ink figure 2 As shown, the diameter of its micro-nano particles is 10nm-10μm...

Embodiment 2

[0031] This embodiment is a method for dispersing liquid metal into micro-nano particles, which specifically includes the following steps:

[0032] (1) Take 100g of DMF and place it in a 250ml beaker, add a magnet and place it on a magnetic stirrer, take 5g of PVDF powder and pour it into the beaker, turn on the magnetic stirrer and stir for 30min to obtain a polymer solution;

[0033] (2) 1g liquid metal (Ga 75.5 In 24.5 ) into the polymer solution obtained in step (1), and continue stirring for 1 hour, the liquid metal can be dispersed into micro-nano particles.

[0034] In step (1) and step (2), the stirring speed is 300-500 rpm.

[0035] The liquid metal micro-nano particles in the liquid metal solution obtained in this example have a diameter of 100 nm to 10 μm, and the liquid metal solution has no obvious agglomeration and sedimentation phenomenon after being stored at room temperature for 50 hours, and a small amount of metal deposits after 30 days.

Embodiment 3

[0037] This embodiment is a method for dispersing liquid metal into micro-nano particles, which specifically includes the following steps:

[0038] (1) Take 100g of DMF and place it in a 250ml beaker, add a magnet and place it on a magnetic stirrer, take 20g of PVDF powder and pour it into the beaker, turn on the magnetic stirrer and stir for 30min to obtain a polymer solution;

[0039] (2) 8g liquid metal (Ga 75.5 In 24.5 ) into the polymer solution obtained in step (1), and continue stirring for 12 hours, the liquid metal can be dispersed into micro-nano particles.

[0040] In step (1) and step (2), the stirring speed is 300-500 rpm.

[0041] The liquid metal micro-nano particles in the liquid metal solution obtained in this example have a diameter of 100 nm to 10 μm, and the liquid metal solution has no obvious agglomeration and sedimentation phenomenon after being stored at room temperature for 50 hours, and a small amount of agglomeration occurs after 35 days.

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Abstract

The invention relates to the field of liquid metal, in particular to a method for dispersing liquid metal to micro nano-particles. The method comprises the specific steps that high molecular polymer is dissolved in N,N-dimethylformamide (DMF), and a polymer solution is obtained; the liquid metal is dripped into the polymer solution, stirring is conducted, and the metal liquid is dispersed to the micro nano-particles. By means of the method for dispersing the liquid metal to the micro nano-particles, the liquid metal can be dispersed to the micro nano-particles without obvious agglomeration and sediment within 50 h; the liquid metal can be efficiently dispersed within a short time, and a method for preparing base materials is provided for printing the liquid metal.

Description

technical field [0001] The invention relates to the field of liquid metal, in particular to a method for dispersing liquid metal into micro-nano particles. Background technique [0002] Liquid metal refers to seventeen metals whose melting point does not exceed the melting temperature of aluminum (660.37°C), which are mercury, cesium, gallium, rubidium, potassium, sodium, indium, lithium, tin, bismuth, thallium, cadmium, lead, zinc, antimony , magnesium, aluminum, and many other alloys are liquid at room temperature or even at very low temperatures, such as sodium potassium alloy (melting point -12.5°C). [0003] Liquid metal has important application prospects in the fields of heat transfer, printing and bionics. It can reduce equipment costs and improve work efficiency. However, liquid metal is not easily dispersed into smaller particles due to its high surface tension. For example, small liquid metal particles are easy to agglomerate in water or sodium hydroxide alkali ...

Claims

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Application Information

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IPC IPC(8): B22F9/06B82Y40/00
Inventor 王磊刘静
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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