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Porous calcium silicate hydrate composite phase change heat storage material and preparation method and application thereof
The invention discloses a porous calcium silicate hydrate composite phase change heat storage material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a silicon solution and a calcium solution, stirring for a short time, carrying out vacuum filtration, washing and drying to obtain a hydrated calcium silicate precursor, carrying out hydration treatment and drying to obtain porous hydrated calcium silicate, mixing the porous hydrated calcium silicate with a phase-change material, and dipping under high-temperature and vacuum conditions to obtain the porous calcium silicate phase-change material. The hydrated calcium silicate composite phase change heat storage material is prepared. The method is simple and low in cost, substances outside a synthetic system do not need to be used, and the purity of the system is guaranteed. The latent heat value and packaging rate of the hydrated calcium silicate composite material are improved, and the latent heat value (packaging rate) of the hydrated calcium silicate composite material is as high as 81.6% compared with that of a pure phase-change material. The composite material not only has excellent thermal performance, but also provides a new solution for application in cement concrete and building thermal management due to good compatibility.
本发明公开了一种多孔水化硅酸钙复合相变储热材料及制备方法和应用。本发明通过将硅溶液与钙溶液混合并进行短时间搅拌、真空抽滤、洗涤和干燥，获得水化硅酸钙前驱体，再通过水化处理和干燥，得到多孔水化硅酸钙，然后将多孔水化硅酸钙与相变材料混合，并在高温、真空条件下浸渍，制得水化硅酸钙复合相变储热材料。本方法通过简单且成本低廉的方法，不需使用合成体系外的物质，保证了体系的纯净。提高了水化硅酸钙复合材料的潜热值和封装率，相对纯相变材料的潜热值(封装率)高达81.6％。该复合材料不仅具有优异的热性能，还因其良好的相容性，为水泥混凝土中的应用和建筑热管理提供了一种新的解决方案。
Porous calcium silicate hydrate composite phase change heat storage material and preparation method and application thereof
The invention discloses a porous calcium silicate hydrate composite phase change heat storage material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a silicon solution and a calcium solution, stirring for a short time, carrying out vacuum filtration, washing and drying to obtain a hydrated calcium silicate precursor, carrying out hydration treatment and drying to obtain porous hydrated calcium silicate, mixing the porous hydrated calcium silicate with a phase-change material, and dipping under high-temperature and vacuum conditions to obtain the porous calcium silicate phase-change material. The hydrated calcium silicate composite phase change heat storage material is prepared. The method is simple and low in cost, substances outside a synthetic system do not need to be used, and the purity of the system is guaranteed. The latent heat value and packaging rate of the hydrated calcium silicate composite material are improved, and the latent heat value (packaging rate) of the hydrated calcium silicate composite material is as high as 81.6% compared with that of a pure phase-change material. The composite material not only has excellent thermal performance, but also provides a new solution for application in cement concrete and building thermal management due to good compatibility.
本发明公开了一种多孔水化硅酸钙复合相变储热材料及制备方法和应用。本发明通过将硅溶液与钙溶液混合并进行短时间搅拌、真空抽滤、洗涤和干燥，获得水化硅酸钙前驱体，再通过水化处理和干燥，得到多孔水化硅酸钙，然后将多孔水化硅酸钙与相变材料混合，并在高温、真空条件下浸渍，制得水化硅酸钙复合相变储热材料。本方法通过简单且成本低廉的方法，不需使用合成体系外的物质，保证了体系的纯净。提高了水化硅酸钙复合材料的潜热值和封装率，相对纯相变材料的潜热值(封装率)高达81.6％。该复合材料不仅具有优异的热性能，还因其良好的相容性，为水泥混凝土中的应用和建筑热管理提供了一种新的解决方案。
Porous calcium silicate hydrate composite phase change heat storage material and preparation method and application thereof
一种多孔水化硅酸钙复合相变储热材料及制备方法和应用
LIU ZHAOLONG (author) / FENG PAN (author) / SHEN XUYAN (author) / ZHANG QI (author) / LI WENJIA (author) / YUAN LONG (author)
2024-07-02
Patent
Electronic Resource
Chinese
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