Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatings
In this study, hydrophobic silica dry gel (TSA) modified by trimethylchlorosilane (TMCS) was fabricated using liquid sodium silicate and hydrogen peroxide as raw materials through a green and efficient room-temperature drying approach. Subsequently, TSA was uniformly dispersed into a slurry by the a...
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221450952500227X |
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| author | Enwen Liu Yijuan Chang Haiqiao Zhang Zhangbei Chen Zhihui Wu |
| author_facet | Enwen Liu Yijuan Chang Haiqiao Zhang Zhangbei Chen Zhihui Wu |
| author_sort | Enwen Liu |
| collection | DOAJ |
| description | In this study, hydrophobic silica dry gel (TSA) modified by trimethylchlorosilane (TMCS) was fabricated using liquid sodium silicate and hydrogen peroxide as raw materials through a green and efficient room-temperature drying approach. Subsequently, TSA was uniformly dispersed into a slurry by the aqueous solution of polyvinylpyrrolidone (PVP), which was then distributed into polyvinyl butyral resin (PVB) for the fabrication of TSA/PVP-PVB composite coating. The optical properties, mechanical properties, aging resistance, and heat and insulation properties of the composite coating were regulated by controlling the amount of TSA paste. The experimental results demonstrate that the introduction of TSA enhances the optical properties of the composite coating: The solar reflectance reaches up to more than 50 %, the transmittance of composite coatings within 15 % TSA is higher than 60 % and the haze is higher than 95 %, thereby improving the anti-ultraviolet aging performance (after 120 h aging treatment, its color difference, gloss, water contact angle (WCA) and microstructure remain stable). The tensile strength and fracture strain decreased as the addition amount increased. Meanwhile, the WCA rose from 42.7° (pure PVB) to 95.4° (30 % TSA composite coating). Interestingly, when we placed the 1 mm thick 30 % TSA composite coating on the heating plate for 10 s at 100 ℃, the surface temperature was only approximately 52.5 ℃, and the heat insulation efficiency was close to 50 %. Additionally, the thermal conductivity of the pure PVB coating was 0.211 W/(m·K), and the TSA content was inversely proportional to the thermal conductivity. The thermal conductivity of the 30 % TSA composite coating was reduced to 0.068 W/(m·K). Compared with traditional methods, the composite coating prepared in this study is more environmentally friendly, economical, and energy-saving, and has outstanding building protection performance. |
| format | Article |
| id | doaj-art-fed3667d1b924d5c923a6a134379e7fe |
| institution | DOAJ |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-fed3667d1b924d5c923a6a134379e7fe2025-08-20T02:45:18ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0442910.1016/j.cscm.2025.e04429Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatingsEnwen Liu0Yijuan Chang1Haiqiao Zhang2Zhangbei Chen3Zhihui Wu4College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu 210037, ChinaCollege of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu 210037, ChinaCollege of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu 210037, ChinaCollege of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu 210037, ChinaCollege of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu 210037, China; Corresponding author at: College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.In this study, hydrophobic silica dry gel (TSA) modified by trimethylchlorosilane (TMCS) was fabricated using liquid sodium silicate and hydrogen peroxide as raw materials through a green and efficient room-temperature drying approach. Subsequently, TSA was uniformly dispersed into a slurry by the aqueous solution of polyvinylpyrrolidone (PVP), which was then distributed into polyvinyl butyral resin (PVB) for the fabrication of TSA/PVP-PVB composite coating. The optical properties, mechanical properties, aging resistance, and heat and insulation properties of the composite coating were regulated by controlling the amount of TSA paste. The experimental results demonstrate that the introduction of TSA enhances the optical properties of the composite coating: The solar reflectance reaches up to more than 50 %, the transmittance of composite coatings within 15 % TSA is higher than 60 % and the haze is higher than 95 %, thereby improving the anti-ultraviolet aging performance (after 120 h aging treatment, its color difference, gloss, water contact angle (WCA) and microstructure remain stable). The tensile strength and fracture strain decreased as the addition amount increased. Meanwhile, the WCA rose from 42.7° (pure PVB) to 95.4° (30 % TSA composite coating). Interestingly, when we placed the 1 mm thick 30 % TSA composite coating on the heating plate for 10 s at 100 ℃, the surface temperature was only approximately 52.5 ℃, and the heat insulation efficiency was close to 50 %. Additionally, the thermal conductivity of the pure PVB coating was 0.211 W/(m·K), and the TSA content was inversely proportional to the thermal conductivity. The thermal conductivity of the 30 % TSA composite coating was reduced to 0.068 W/(m·K). Compared with traditional methods, the composite coating prepared in this study is more environmentally friendly, economical, and energy-saving, and has outstanding building protection performance.http://www.sciencedirect.com/science/article/pii/S221450952500227XSilicon dioxidePVBOpticalThermal insulation propertyBuilding protection |
| spellingShingle | Enwen Liu Yijuan Chang Haiqiao Zhang Zhangbei Chen Zhihui Wu Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatings Case Studies in Construction Materials Silicon dioxide PVB Optical Thermal insulation property Building protection |
| title | Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatings |
| title_full | Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatings |
| title_fullStr | Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatings |
| title_full_unstemmed | Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatings |
| title_short | Trimethylchlorosilane (TMCS) modified hydrophobic silica dry gel (TSA) enhanced the optical, aging behavior and thermal properties of polyvinyl butyral composite coatings |
| title_sort | trimethylchlorosilane tmcs modified hydrophobic silica dry gel tsa enhanced the optical aging behavior and thermal properties of polyvinyl butyral composite coatings |
| topic | Silicon dioxide PVB Optical Thermal insulation property Building protection |
| url | http://www.sciencedirect.com/science/article/pii/S221450952500227X |
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