Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570
TiO2 sol was prepared by sol-gel method using tetrabutyl titanate as precursor and acetic acid as catalyst, and then hydrophobically modified TiO2 sol was obtained by reducing its surface energy with γ-methacryloxypropyl trimethoxysilane (KH570), the modified TiO2 sol was sprayed on the surface of t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2022-02-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000006 |
| _version_ | 1797965190212354048 |
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| author | LI Qing QIAN Fuping DONG Wei HAN Yunlong LU Jinli |
| author_facet | LI Qing QIAN Fuping DONG Wei HAN Yunlong LU Jinli |
| author_sort | LI Qing |
| collection | DOAJ |
| description | TiO2 sol was prepared by sol-gel method using tetrabutyl titanate as precursor and acetic acid as catalyst, and then hydrophobically modified TiO2 sol was obtained by reducing its surface energy with γ-methacryloxypropyl trimethoxysilane (KH570), the modified TiO2 sol was sprayed on the surface of the filter media to make it superhydrophobic. The wettability, surface morphology, chemical composition and filtration performance of the filter media before and after modification were analyzed.The results show that the modified coating is uniformly deposited on the surface of the filter media and the fiber surface completely wrapped, and the water contact angle of the modified filter media reaches 156.29°. By testing the filtration performance of the particles with the size of 0.3 μm at the filtration velocity of 0.043-0.127 m/s, it can be seen that the filtration efficiency of the modified filter media is increased by an average of 2.7672% compared with the unmodified filter media, and the filter quality factor is increased by 0.34%, which improves the filtration performance of the filter media. In addition, the hydrophobic filter media still has superhydrophobicity after 50 times of sandpaper abrasion cycles and 30 h acid-base solution immersion. The modified filter media has excellent self-cleaning performance by cleaning the surface of coal powder pollution. |
| first_indexed | 2024-04-11T01:55:04Z |
| format | Article |
| id | doaj.art-381edc911386483a80954a0f3f705b69 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T01:55:04Z |
| publishDate | 2022-02-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-381edc911386483a80954a0f3f705b692023-01-03T05:15:54ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812022-02-0150214415210.11868/j.issn.1001-4381.2021.0000061645578617280-1371340532Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570LI Qing0QIAN Fuping1DONG Wei2HAN Yunlong3LU Jinli4School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243032, Anhui, ChinaSchool of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui, ChinaSchool of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243032, Anhui, ChinaSchool of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243032, Anhui, ChinaSchool of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243032, Anhui, ChinaTiO2 sol was prepared by sol-gel method using tetrabutyl titanate as precursor and acetic acid as catalyst, and then hydrophobically modified TiO2 sol was obtained by reducing its surface energy with γ-methacryloxypropyl trimethoxysilane (KH570), the modified TiO2 sol was sprayed on the surface of the filter media to make it superhydrophobic. The wettability, surface morphology, chemical composition and filtration performance of the filter media before and after modification were analyzed.The results show that the modified coating is uniformly deposited on the surface of the filter media and the fiber surface completely wrapped, and the water contact angle of the modified filter media reaches 156.29°. By testing the filtration performance of the particles with the size of 0.3 μm at the filtration velocity of 0.043-0.127 m/s, it can be seen that the filtration efficiency of the modified filter media is increased by an average of 2.7672% compared with the unmodified filter media, and the filter quality factor is increased by 0.34%, which improves the filtration performance of the filter media. In addition, the hydrophobic filter media still has superhydrophobicity after 50 times of sandpaper abrasion cycles and 30 h acid-base solution immersion. The modified filter media has excellent self-cleaning performance by cleaning the surface of coal powder pollution.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000006tio2pet filter mediasilane coupling agentsuperhydrophobicity propertyfiltration per-formancesurface modification |
| spellingShingle | LI Qing QIAN Fuping DONG Wei HAN Yunlong LU Jinli Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570 Cailiao gongcheng tio2 pet filter media silane coupling agent superhydrophobicity property filtration per-formance surface modification |
| title | Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570 |
| title_full | Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570 |
| title_fullStr | Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570 |
| title_full_unstemmed | Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570 |
| title_short | Preparation and properties of TiO2 superhydrophobic filter media modified by silane coupling agent KH570 |
| title_sort | preparation and properties of tio2 superhydrophobic filter media modified by silane coupling agent kh570 |
| topic | tio2 pet filter media silane coupling agent superhydrophobicity property filtration per-formance surface modification |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000006 |
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