4.7 Article

Aerosol-deposited Al2O3/PTFE hydrophobic coatings with adjustable transparency

期刊

JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 104, 期 4, 页码 1716-1725

出版社

WILEY
DOI: 10.1111/jace.17609

关键词

Aerosol deposition; Al2O3; PTFE; Architectural glass; Hydrophobic; Transmittance

资金

  1. Korea Institute of Energy Technology Evaluation and Planning [20194010201810]
  2. National Research Foundation of Korea [2020R1F1A1073491]
  3. Kwangwoon University
  4. Korea Evaluation Institute of Industrial Technology (KEIT) [20194010201810] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
  5. National Research Foundation of Korea [2020R1F1A1073491] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

The study demonstrated the successful fabrication of transparent and opaque hydrophobic alumina/polytetrafluoroethylene composite layers using aerosol deposition process, which not only applied to architectural windows, but also exhibited high transmittance and excellent hydrophobic properties.
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 degrees. 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.

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