Liquid metal microparticles with core-shell structures and preparation method and application thereof
A liquid metal, core-shell structure technology, applied in metal processing equipment, nanotechnology, transportation and packaging, etc., can solve problems such as easy re-agglomeration, uneven particle size, poor coating effect, etc., to achieve a wide range of application scenarios, Excellent application prospect, anti-corrosion effect
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[0036] Example 1
[0037] A method for preparing liquid metal microparticles with a core-shell structure includes the following steps:
[0038] 1) Take 250g of tetrahydrofuran and 50g of polyvinyl chloride powder and place them in a 500ml beaker, and use a mechanical stirrer to stir for 30 minutes at a stirring speed of 300rpm to prepare a polymer solution;
[0039] 2) Put 20g of liquid metal (Ga 75.5 In 24.5 ) Drop into step 1) polymer solution, place it in a vortex mixer that can spontaneously generate mechanical vibration, and shake for 45 minutes;
[0040] 3) The polymer solution mixed with the liquid metal is extruded into water through a filter membrane with a particle diameter of 150 nm. At this time, the polymer solution will solidify when exposed to water, thereby enveloping the liquid metal core, so that liquid metal microdroplets with a core-shell structure with uniform particle size can be obtained.
[0041] Basic principle: The addition of polyvinyl chloride not only incre...
Example Embodiment
[0044] Example 2
[0045] A method for preparing liquid metal microparticles with a core-shell structure specifically includes the following steps:
[0046] 1) Take 250g of methylpyrrolidone and 50g of polyvinylidene fluoride powder and place them in a 500ml beaker, and use a mechanical stirrer to stir for 30 minutes at a stirring speed of 300rpm to obtain a polymer solution;
[0047] 2) Put 20g of liquid metal (Ga 75.5 In 24.5 ) Drop into the polymer solution prepared in step 1), and stir for 15 minutes with a magnetic stirrer at a speed of 300 rpm;
[0048] 3) The above-mentioned organic mixed solution mixed with liquid metal is extruded into water through a filter membrane with a particle diameter of 300 nm. At this time, the organic mixed solution will solidify when exposed to water, thereby enveloping the liquid metal core, so that liquid metal microdroplets with a core-shell structure with uniform particle size can be obtained.
[0049] The diameter of the liquid metal with a cor...
Example Embodiment
[0050] Example 3
[0051] A method for preparing liquid metal microparticles with a core-shell structure specifically includes the following steps:
[0052] 1) Take 250g of N,N-dimethylformamide and 50g of polyethylene powder and place them in a 500ml beaker, stir with a mechanical stirrer for 30 minutes at a stirring speed of 300rpm to obtain a polymer solution;
[0053] 2) Put 20g of liquid metal Ga 75.5 In 24.5 ) Drop into the polymer solution in step 1), place it in an ultrasonic disperser, and sonicate it for 10 minutes in normal mode;
[0054] 3) The above-mentioned organic mixed solution mixed with liquid metal is extruded into water through an alumina template with a particle diameter of 200 nm. At this time, the organic mixed solution will solidify when exposed to water, thereby enveloping the liquid metal core, so that liquid metal microdroplets with a core-shell structure with uniform particle size can be obtained.
[0055] The diameter of the liquid metal microparticles wit...
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