Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panels
The utilization of thermal reflective materials on the building surface is one of the most promising methods for energy-saving in tropical and subtropical regions. In this work, nano TiO2 (NT) is used to enhance the mechanical properties and thermal reflectance of inorganic decorative panels, which...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509524001992 |
| _version_ | 1797260372707639296 |
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| author | Rui Zhang Gongxun Wang Hassana Tahir Maude Bo Huang Fucai Liu Mingqiao Zhu |
| author_facet | Rui Zhang Gongxun Wang Hassana Tahir Maude Bo Huang Fucai Liu Mingqiao Zhu |
| author_sort | Rui Zhang |
| collection | DOAJ |
| description | The utilization of thermal reflective materials on the building surface is one of the most promising methods for energy-saving in tropical and subtropical regions. In this work, nano TiO2 (NT) is used to enhance the mechanical properties and thermal reflectance of inorganic decorative panels, which are widely used for building exterior walls in China. The obtained results show that NT can modify the pore size distribution of the decorative panels and reduce the presence of macropores, and the compressive strength of the decorative panels with 2% NT increased by 4.78%. The thermal reflective properties of the decorative panels initially increased and then decreased with increasing NT content and particle size. Notably, the panels made of 6% NT with a particle size of 100 nm exhibited higher thermal reflectivity, resulting in a surface temperature decrease of 3.9 °C compared to the reference sample. Furthermore, compounding different particle sizes NT is employed to produce the decorative panels, and about a 4.5 °C decrease can be observed in this study. Mid- and far-infrared absorption spectroscopy results show that the thermal emissivity is improved in the mid- and far-infrared region of 2.5–25 μm when 100-nm and 25-nm NT were compounded at a weight ratio of 1:1. Additionally, to further evaluate the energy-saving of the decorative panels, the Designer’s Simulation Toolkit (DeST) is employed, which demonstrates that the thermal reflective decorative panels with 6% NT can save 7.19% of building air-conditioning energy consumption and reduce the indoor temperature by 1.5 °C. |
| first_indexed | 2024-04-24T23:24:17Z |
| format | Article |
| id | doaj.art-d80340456273465e9e37886f3c81efb1 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-24T23:24:17Z |
| publishDate | 2024-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-d80340456273465e9e37886f3c81efb12024-03-16T05:08:26ZengElsevierCase Studies in Construction Materials2214-50952024-07-0120e03048Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panelsRui Zhang0Gongxun Wang1Hassana Tahir Maude2Bo Huang3Fucai Liu4Mingqiao Zhu5School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaSchool of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; Hunan Province Intelligent Construction Assembly Passive House Engineering Technology Research Center, Xiangtan 411201, China; Corresponding author at: School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaSchool of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaSchool of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; Guangdong Gaiteqi New Materials Technology Co, Ltd, Qingyuan 511600, ChinaHunan Province Intelligent Construction Assembly Passive House Engineering Technology Research Center, Xiangtan 411201, ChinaThe utilization of thermal reflective materials on the building surface is one of the most promising methods for energy-saving in tropical and subtropical regions. In this work, nano TiO2 (NT) is used to enhance the mechanical properties and thermal reflectance of inorganic decorative panels, which are widely used for building exterior walls in China. The obtained results show that NT can modify the pore size distribution of the decorative panels and reduce the presence of macropores, and the compressive strength of the decorative panels with 2% NT increased by 4.78%. The thermal reflective properties of the decorative panels initially increased and then decreased with increasing NT content and particle size. Notably, the panels made of 6% NT with a particle size of 100 nm exhibited higher thermal reflectivity, resulting in a surface temperature decrease of 3.9 °C compared to the reference sample. Furthermore, compounding different particle sizes NT is employed to produce the decorative panels, and about a 4.5 °C decrease can be observed in this study. Mid- and far-infrared absorption spectroscopy results show that the thermal emissivity is improved in the mid- and far-infrared region of 2.5–25 μm when 100-nm and 25-nm NT were compounded at a weight ratio of 1:1. Additionally, to further evaluate the energy-saving of the decorative panels, the Designer’s Simulation Toolkit (DeST) is employed, which demonstrates that the thermal reflective decorative panels with 6% NT can save 7.19% of building air-conditioning energy consumption and reduce the indoor temperature by 1.5 °C.http://www.sciencedirect.com/science/article/pii/S2214509524001992Nano-TiO2Inorganic decorative panelsThermal reflective propertiesThermal emissivityAir conditioning energy consumption |
| spellingShingle | Rui Zhang Gongxun Wang Hassana Tahir Maude Bo Huang Fucai Liu Mingqiao Zhu Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panels Case Studies in Construction Materials Nano-TiO2 Inorganic decorative panels Thermal reflective properties Thermal emissivity Air conditioning energy consumption |
| title | Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panels |
| title_full | Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panels |
| title_fullStr | Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panels |
| title_full_unstemmed | Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panels |
| title_short | Compressive strength, thermal reflectivity and energy saving of nano-TiO2-based inorganic decorative panels |
| title_sort | compressive strength thermal reflectivity and energy saving of nano tio2 based inorganic decorative panels |
| topic | Nano-TiO2 Inorganic decorative panels Thermal reflective properties Thermal emissivity Air conditioning energy consumption |
| url | http://www.sciencedirect.com/science/article/pii/S2214509524001992 |
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