Aerosol-deposited Al2O3/PTFE hydrophobic coatings with adjustable transparency |
| |
| Authors: | Ik-Soo Kim Myung-Yeon Cho Yohan Jeong Yun-Cheol Shin Dong-Won Lee Chulhwan Park Sang-Mo Koo Weon Ho Shin Won-Jik Yang Yeol Park Hiesang Sohn Jong-Min Oh |
| |
| Affiliation: | 1. Department of Chemical Engineering, Kwangwoon University, Nowon-gu, Seoul, Republic of Korea;2. Department of Electronic Materials Engineering, Kwangwoon University, Nowon-gu, Seoul, Republic of Korea;3. Material Technology Center, Korea Testing Laboratory, Guro-gu, Seoul, Republic of Korea;4. Department of Architectural Engineering, Kwangwoon University, Nowon-gu, Seoul, Republic of Korea;5. Department of Architecture, Kwangwoon University, Nowon-gu, Seoul, Republic of Korea |
| |
| Abstract: | With the wide range of requirements for architectural glass, such as transparency, opacity, and hydrophobicity, there is a need to address the issues in the complexity of convention methods. Thus, considering functionality and applicability in various architectural windows, hydrophobic alumina/polytetrafluoroethylene (Al2O3/PTFE) composite layers with transparency or opacity were transferred to commercial architectural glass using a facile aerosol deposition (AD) process. We successfully fabricated hydrophobic coating layers with high transmittance (only a 0.03% difference from sheet glass) by optimizing the PTFE content in Al2O3 using solution-based synthesized powders to enable a uniform surface topology. The opaque hydrophobic Al2O3/PTFE coating layers exhibit a transmittance of approximately 0% with excellent hydrophobicity of 130°. Remarkably, this opaque film was successfully employed onto a large deposition area, curved substrate, and micro-patterned regions. It is believed that our AD-prepared composite layers have great potential for architectural glass in terms of economic feasibility and versatility. |
| |
| Keywords: | Aerosol deposition Al2O3/PTFE Architectural glass Hydrophobic Transmittance |
|
|
