Latent-heat storage body microcapsules and process for producing latent-heat storage body microcapsules
US-2019300770-A1 · Oct 3, 2019 · US
Latent heat storage body microcapsule and method for producing same
US12522759B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12522759-B2 |
| Application number | US-202017753297-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 27, 2020 |
| Priority date | Aug 27, 2019 |
| Publication date | Jan 13, 2026 |
| Grant date | Jan 13, 2026 |
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- Title
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Abstract
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A latent heat storage body microcapsule includes a core including gallium or gallium alloy; and a shell covering the core and including gallium oxide. A method for producing the same includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a water treatment step of heating the particles in distilled water to form a gallium hydrate on a surface of each of the particles; and an oxidation treatment step of oxidizing the gallium hydrate to form a shell including gallium oxide. The method includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a cooling step of cooling the particles to a solid state; and a pH treatment step of immersing the particles in an aqueous solution having a predetermined pH to form a shell including gallium hydrate.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A latent heat storage body microcapsule comprising: a core including gallium or gallium alloy; and a shell covering the core and including gallium oxide, wherein a volume inside the shell is 1.03 times or more of a volume of the core in a liquid state at a melting point temperature, and the shell has a thickness of from 0.5 to 1.0 μm. 2 . The latent heat storage body microcapsule according to claim 1 , wherein the gallium oxide includes β-Ga 2 O 3 or mixture of α-Ga 2 O 3 and β-Ga 2 O 3 . 3 . The latent heat storage body microcapsule according to claim 2 , wherein a volume ratio of the β-Ga 2 O 3 to the mixture-gallium oxide is 0.7 or more and 1 or less. 4 . The latent heat storage body microcapsule according to claim 1 , wherein the gallium alloy is a gallium-indium alloy, a gallium-tin alloy, or a gallium-zinc alloy. 5 . The latent heat storage body microcapsule according to claim 1 , wherein the latent heat storage body microcapsule has a particle size of 20 μm or more and 60 μm or less. 6 . The latent heat storage body microcapsule according to claim 1 , wherein a ratio (r2/r1) between a film thickness r2 of the shell and a radius r1 of the latent heat storage body microcapsule is 0.025 or more and 0.07 or less.
Assignees
Inventors
Classifications
Micron size particles, i.e. above 1 micrometer up to 500 micrometer · CPC title
Oxide · CPC title
Low melting point metals, i.e. Zn, Pb, Sn, Cd, In, Ga · CPC title
Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title
Chemical treatment, e.g. passivation or decarburisation · CPC title
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- What does patent US12522759B2 cover?
- A latent heat storage body microcapsule includes a core including gallium or gallium alloy; and a shell covering the core and including gallium oxide. A method for producing the same includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a water treatment step of heating the particles in distilled water to form a gallium hydrate on a surface…
- Who is the assignee on this patent?
- Univ Hokkaido Nat Univ Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K5/063. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 13 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).