Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion
Hydrophobic fumed silica (HFS) is a commonly used rheology additive in waterborne coatings. A series of experiments were conducted on the HFS-dispersing technology in this study. The size and structure of HFS primary particles were observed via transmission electron microscopy (TEM). The measurement...
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MDPI AG
2023-08-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/17/3502 |
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| author | Jinglu Xu Jihu Wang Shaoguo Wen Shengnan Ding Jia Song Sihong Jiang Haopeng Wang |
| author_facet | Jinglu Xu Jihu Wang Shaoguo Wen Shengnan Ding Jia Song Sihong Jiang Haopeng Wang |
| author_sort | Jinglu Xu |
| collection | DOAJ |
| description | Hydrophobic fumed silica (HFS) is a commonly used rheology additive in waterborne coatings. A series of experiments were conducted on the HFS-dispersing technology in this study. The size and structure of HFS primary particles were observed via transmission electron microscopy (TEM). The measurement results of the TEM were D<sub>50</sub> = 13.6 nm and D<sub>90</sub> = 19.7 nm, respectively. The particle size and dispersion performance of HFS were tested via dynamic light scattering (DLS). Additionally, the HFS aqueous dispersion was prepared and compounded with waterborne polyacrylic latex and polyurethane resin. The elemental distribution of the coatings was characterized using energy dispersive spectroscopy (EDS). The results show that the HFS in a non-ionic polymer dispersant had the best dispersion performance. The particle size of the HFS in the aqueous dispersion is related to the dispersion conditions. Under optimized conditions, the HFS aqueous dispersion can be prepared with a particle size of D<sub>50</sub> = 27.2 nm. The HFS aqueous dispersion has stable storage stability. Even after storage for 47 d, the particle size still did not change significantly. |
| first_indexed | 2024-03-10T23:15:35Z |
| format | Article |
| id | doaj.art-983097f905084f73b7f8a0d7e9f7cef3 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T23:15:35Z |
| publishDate | 2023-08-01 |
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| record_format | Article |
| series | Polymers |
| spelling | doaj.art-983097f905084f73b7f8a0d7e9f7cef32023-11-19T08:42:29ZengMDPI AGPolymers2073-43602023-08-011517350210.3390/polym15173502Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous DispersionJinglu Xu0Jihu Wang1Shaoguo Wen2Shengnan Ding3Jia Song4Sihong Jiang5Haopeng Wang6College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaCollege of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaCollege of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaCollege of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaCollege of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaCollege of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaCollege of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaHydrophobic fumed silica (HFS) is a commonly used rheology additive in waterborne coatings. A series of experiments were conducted on the HFS-dispersing technology in this study. The size and structure of HFS primary particles were observed via transmission electron microscopy (TEM). The measurement results of the TEM were D<sub>50</sub> = 13.6 nm and D<sub>90</sub> = 19.7 nm, respectively. The particle size and dispersion performance of HFS were tested via dynamic light scattering (DLS). Additionally, the HFS aqueous dispersion was prepared and compounded with waterborne polyacrylic latex and polyurethane resin. The elemental distribution of the coatings was characterized using energy dispersive spectroscopy (EDS). The results show that the HFS in a non-ionic polymer dispersant had the best dispersion performance. The particle size of the HFS in the aqueous dispersion is related to the dispersion conditions. Under optimized conditions, the HFS aqueous dispersion can be prepared with a particle size of D<sub>50</sub> = 27.2 nm. The HFS aqueous dispersion has stable storage stability. Even after storage for 47 d, the particle size still did not change significantly.https://www.mdpi.com/2073-4360/15/17/3502fumed silicadispersantdispersibilityparticle sizewaterborne resin |
| spellingShingle | Jinglu Xu Jihu Wang Shaoguo Wen Shengnan Ding Jia Song Sihong Jiang Haopeng Wang Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion Polymers fumed silica dispersant dispersibility particle size waterborne resin |
| title | Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion |
| title_full | Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion |
| title_fullStr | Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion |
| title_full_unstemmed | Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion |
| title_short | Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion |
| title_sort | preparation and dispersion performance of hydrophobic fumed silica aqueous dispersion |
| topic | fumed silica dispersant dispersibility particle size waterborne resin |
| url | https://www.mdpi.com/2073-4360/15/17/3502 |
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