Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of preparation methods on the structure and thermal properties of stearic acid/activated montmorillonite phase change materials
Highlights ► PCMs prepared by melting and dissolved impregnation method have similar structure. ► Melting impregnation method is more suitable for preparing reliable PCMs. ► Latent heats of SA/a-MMT are as high as same type composites.
Abstract Two kinds of phase change materials (PCMs) were prepared and various characterization techniques were employed to investigate the influence of preparation methods on the structural characteristics and thermal properties. The results show both composites have similar morphology, structure and comparable latent heats with SA intercalated into a-MMT gallery. Thermal reliability and thermal cycling test obviously indicated that preparation technology affected the thermal properties. Latent heat of the composite prepared by melting impregnation method changed by −0.59% for fusion and −1.01% for solidification, whereas, it declined by 39.71% and 40.89% for the composite prepared by solution immersed technology after 600 thermal cycling. In other words, the melting impregnation method is a potential candidate for preparing reliable composite PCMs.
Effect of preparation methods on the structure and thermal properties of stearic acid/activated montmorillonite phase change materials
Highlights ► PCMs prepared by melting and dissolved impregnation method have similar structure. ► Melting impregnation method is more suitable for preparing reliable PCMs. ► Latent heats of SA/a-MMT are as high as same type composites.
Abstract Two kinds of phase change materials (PCMs) were prepared and various characterization techniques were employed to investigate the influence of preparation methods on the structural characteristics and thermal properties. The results show both composites have similar morphology, structure and comparable latent heats with SA intercalated into a-MMT gallery. Thermal reliability and thermal cycling test obviously indicated that preparation technology affected the thermal properties. Latent heat of the composite prepared by melting impregnation method changed by −0.59% for fusion and −1.01% for solidification, whereas, it declined by 39.71% and 40.89% for the composite prepared by solution immersed technology after 600 thermal cycling. In other words, the melting impregnation method is a potential candidate for preparing reliable composite PCMs.
Effect of preparation methods on the structure and thermal properties of stearic acid/activated montmorillonite phase change materials
Wang, Yi (Autor:in) / Zheng, Han (Autor:in) / Feng, Hui Xia (Autor:in) / Zhang, De Yi (Autor:in)
Energy and Buildings ; 47 ; 467-473
14.12.2011
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Stearic acid modified montmorillonite as emerging microcapsules for thermal energy storage
| Online Contents | 2017