Preparation of Polystyrene/SiO 2 Composite Aerogel Microspheres.
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| Title: | Preparation of Polystyrene/SiO 2 Composite Aerogel Microspheres. |
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| Authors: | Qian, Zenghui1 (AUTHOR), Yu, Yangyang1 (AUTHOR), Chen, Wenjing1 (AUTHOR), Jiang, Guodong1 (AUTHOR) gdjiang@njtech.edu.cn, Shen, Yucai1 (AUTHOR), Mao, Zepeng1 (AUTHOR) |
| Source: | Materials (1996-1944). Mar2026, Vol. 19 Issue 5, p1036. 13p. |
| Subjects: | Polystyrene, Aerogels, Surface preparation, Hydrophobic interactions, Polymerization, Heat treatment |
| Abstract: | Highlights: What are the main findings? Surface functionalization-coordinated enhancement via W/O emulsion & in situ copolym. The innovative application of a HMDS/KH570 binary hydrophobic modifier system. Developed Sty-DVB copolymerization for nanoscale reinforcement layer on aerogel microspheres. What are the implications of the main findings? The study provides an efficient strategy for hydrophobic and structural enhancement of SiO2 aerogel. The application of dual hydrophobic modifiers demonstrates potential for tuning surface wettability. Nanoscale reinforcement layer enhances aerogel stability, expanding applications. Silica aerogel microspheres demonstrate tremendous potential as fillers for diverse materials across various fields. Enhancing the strength of silica aerogel microspheres is therefore crucial for their practical applications. This study aims to develop novel hydrophobic polymer-reinforced silica aerogel microspheres using water glass as the precursor, hexamethyldisilazane (HMDS) as the modifier, and styrene as the crosslinking agent, with further strength enhancement achieved through short-term thermal post-treatment. The effects of varying polystyrene coating levels, crosslinker dosage, and short-term heat treatment on the structure and properties of silica aerogel were investigated. The optimized silica aerogel microspheres (Sample A-6) exhibited a specific surface area of 604.8 m2/g and a thermal conductivity of 0.030 W·m−1·K−1 and demonstrated excellent hydrophobicity and mechanical stability. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Highlights: What are the main findings? Surface functionalization-coordinated enhancement via W/O emulsion & in situ copolym. The innovative application of a HMDS/KH570 binary hydrophobic modifier system. Developed Sty-DVB copolymerization for nanoscale reinforcement layer on aerogel microspheres. What are the implications of the main findings? The study provides an efficient strategy for hydrophobic and structural enhancement of SiO2 aerogel. The application of dual hydrophobic modifiers demonstrates potential for tuning surface wettability. Nanoscale reinforcement layer enhances aerogel stability, expanding applications. Silica aerogel microspheres demonstrate tremendous potential as fillers for diverse materials across various fields. Enhancing the strength of silica aerogel microspheres is therefore crucial for their practical applications. This study aims to develop novel hydrophobic polymer-reinforced silica aerogel microspheres using water glass as the precursor, hexamethyldisilazane (HMDS) as the modifier, and styrene as the crosslinking agent, with further strength enhancement achieved through short-term thermal post-treatment. The effects of varying polystyrene coating levels, crosslinker dosage, and short-term heat treatment on the structure and properties of silica aerogel were investigated. The optimized silica aerogel microspheres (Sample A-6) exhibited a specific surface area of 604.8 m2/g and a thermal conductivity of 0.030 W·m−1·K−1 and demonstrated excellent hydrophobicity and mechanical stability. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961944 |
| DOI: | 10.3390/ma19051036 |
