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Composite heat storage material and preparation method thereof
The invention belongs to the technical field of preparation of heat storage materials, and particularly relates to a composite heat storage material and a preparation method thereof. The composite heat storage material comprises a packaging unit and heat core units, wherein at least one heat core unit is wrapped in the packaging unit; the shortest distance between the outer surface of the packaging unit and the outer surface of the adjacent hot core unit is set as X; and X ranges from 0.25 mm to 20 mm. A slow transition structure is formed between the hot core unit and the packaging unit in the composite heat storage material, so that the interfacial potential energy is reduced, and the heat transfer is obviously enhanced; compared with a traditional composite material, the composite heat storage material is better in mechanical stability, thermal conductivity and anti-agglomeration effect. Furthermore, the composite heat storage material disclosed by the invention has better air permeability in the heat storage process, so that carbon dioxide and water vapor are easy to permeate out and permeate in, and meanwhile, the material is not easy to agglomerate and the like.
本发明属于储热材料制备技术领域，具体涉及一种复合储热材料及其制备方法。该复合储热材料包括封装单元和热芯单元，所述封装单元内部包覆至少一个所述热芯单元；所述封装单元的外表面与其相邻的所述热芯单元的外表面之间的最短间距设为X；所述X为0.25‑20mm。该复合储热材料中的热芯单元与封装单元之间形成缓慢过度结构，降低界面势能，显著增强了传热；与传统的复合材料相比，该复合储热材料的机械稳定性、导热性和抗团聚效果更优。进一步地，本发明复合储热材料在储热过程中具有较好的透气性，使二氧化碳和水蒸气易透出和透入，同时该材料还不易出现团聚等问题。
Composite heat storage material and preparation method thereof
The invention belongs to the technical field of preparation of heat storage materials, and particularly relates to a composite heat storage material and a preparation method thereof. The composite heat storage material comprises a packaging unit and heat core units, wherein at least one heat core unit is wrapped in the packaging unit; the shortest distance between the outer surface of the packaging unit and the outer surface of the adjacent hot core unit is set as X; and X ranges from 0.25 mm to 20 mm. A slow transition structure is formed between the hot core unit and the packaging unit in the composite heat storage material, so that the interfacial potential energy is reduced, and the heat transfer is obviously enhanced; compared with a traditional composite material, the composite heat storage material is better in mechanical stability, thermal conductivity and anti-agglomeration effect. Furthermore, the composite heat storage material disclosed by the invention has better air permeability in the heat storage process, so that carbon dioxide and water vapor are easy to permeate out and permeate in, and meanwhile, the material is not easy to agglomerate and the like.
本发明属于储热材料制备技术领域，具体涉及一种复合储热材料及其制备方法。该复合储热材料包括封装单元和热芯单元，所述封装单元内部包覆至少一个所述热芯单元；所述封装单元的外表面与其相邻的所述热芯单元的外表面之间的最短间距设为X；所述X为0.25‑20mm。该复合储热材料中的热芯单元与封装单元之间形成缓慢过度结构，降低界面势能，显著增强了传热；与传统的复合材料相比，该复合储热材料的机械稳定性、导热性和抗团聚效果更优。进一步地，本发明复合储热材料在储热过程中具有较好的透气性，使二氧化碳和水蒸气易透出和透入，同时该材料还不易出现团聚等问题。
Composite heat storage material and preparation method thereof
一种复合储热材料及其制备方法
ASAKI HIRIKINORI (author) / QIAO GENG (author) / ZHAO GUANGYAO (author) / LI ZHEN (author) / ZHANG MENG (author)
2023-06-27
Patent
Electronic Resource
Chinese
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