Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation and properties of fatty acid/alcohol composite phase change mortar
Abstract In order to explore the phase change materials (PCM) for thermal energy storage in the field of building, a ternary composite phase change material lauric acid (LA)-myristic acid (MA)-tetradecyl alcohol (TD) (LMT844) was produced through the Python based on the theory of low eutectic fusion. The melting and the freezing temperature are 28.84 °C and 27.36 °C, latent heat of the melting and freezing are 194.8 J/g and 193.8 J/g, respectively. Meanwhile, in order to enhance the thermal conductivity, expanded perlite (EP) and carbon fiber (CF) were introduced to prepare the CF-LMT844/EP, which were in-bonded to magnesium oxychloride cement (Magnesium oxychloride cement, MOC) and CF-LMT844/EP-MOC mortar was prepared with the optimal mixing amount of CF-LMT844/EP is 20%. The compressive strength is 25.2 MPa, flexural strength is 6.5 MPa, thermal conductivity is 1.773 W/(m.K), melting temperature and latent heat are 29.15 °C and 22.71 J/g, respectively. Through analysis of microstructure, chemical analysis and crystal structure, it is confirmed that CF-LMT844/EP-MOC mortar is a physical mixture among the CF-LMT844/EP aggregate, MOC hydration product and the remaining aggregate without any chemical reaction, which have a small heat weight loss within the range of 0–100 °C can maintain good performance in practical application.
Highlights A new ternary composite phase change material was calculated and prepared. This material was introduced in magnesium oxychloride cement mortar. This composite expect to be applied in the building field.
Preparation and properties of fatty acid/alcohol composite phase change mortar
Abstract In order to explore the phase change materials (PCM) for thermal energy storage in the field of building, a ternary composite phase change material lauric acid (LA)-myristic acid (MA)-tetradecyl alcohol (TD) (LMT844) was produced through the Python based on the theory of low eutectic fusion. The melting and the freezing temperature are 28.84 °C and 27.36 °C, latent heat of the melting and freezing are 194.8 J/g and 193.8 J/g, respectively. Meanwhile, in order to enhance the thermal conductivity, expanded perlite (EP) and carbon fiber (CF) were introduced to prepare the CF-LMT844/EP, which were in-bonded to magnesium oxychloride cement (Magnesium oxychloride cement, MOC) and CF-LMT844/EP-MOC mortar was prepared with the optimal mixing amount of CF-LMT844/EP is 20%. The compressive strength is 25.2 MPa, flexural strength is 6.5 MPa, thermal conductivity is 1.773 W/(m.K), melting temperature and latent heat are 29.15 °C and 22.71 J/g, respectively. Through analysis of microstructure, chemical analysis and crystal structure, it is confirmed that CF-LMT844/EP-MOC mortar is a physical mixture among the CF-LMT844/EP aggregate, MOC hydration product and the remaining aggregate without any chemical reaction, which have a small heat weight loss within the range of 0–100 °C can maintain good performance in practical application.
Highlights A new ternary composite phase change material was calculated and prepared. This material was introduced in magnesium oxychloride cement mortar. This composite expect to be applied in the building field.
Preparation and properties of fatty acid/alcohol composite phase change mortar
Qiyuan, Liu (Autor:in) / Jinmei, Dong (Autor:in) / Ruguang, Li (Autor:in) / Chenggong, Chang (Autor:in) / Yangyuanxiang, Xu (Autor:in) / Jing, Wen (Autor:in) / Weixin, Zheng (Autor:in) / Derong, Wang (Autor:in) / shengxia, An (Autor:in)
24.01.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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