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A new approach for preparation of semi-transparent superhydrophobic coatings by ultrasonic spray hydrolysis of methyltrimethoxysilane

Rahemi Ardekani, S ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.porgcoat.2019.05.033
  3. Publisher: Elsevier B.V , 2019
  4. Abstract:
  5. A novel nebulizing spray hydrolysis approach was used for preparation of semi-transparent superhydrophobic coatings. Methyltrimethoxysilane was dissolved in water:ethanol mixture and ultrasonically sprayed on different substrates. Superhydrophobic coatings with a contact angle (CA) as high as 164° and a sliding angle below 5° were obtained. FESEM and AFM revealed a hierarchical micro-nano binary structure with nanometric roughness of the coatings. The coated glass substrate exhibited transmittance close to 80%. The prepared coating showed great self-cleaning and water jet repellency behaviors. The superhydrophobicity of the samples was remained after subjecting to ambient conditions for 50 days. The coating was also durable under water flushing test. © 2019 Elsevier B.V
  6. Keywords:
  7. Coatings ; Self-cleaning ; Superhydrophobicity ; Ultrasonic spray hydrolysis ; Wettability ; Contact angle ; Hydrolysis ; Hydrophobicity ; Substrates ; Wetting ; Coated glass substrates ; Different substrates ; Methyltrimethoxysilane ; Micro-nano-binary structure ; Self cleaning ; Superhydrophobic coatings ; Ultrasonic spray
  8. Source: Progress in Organic Coatings ; Volume 135 , 2019 , Pages 248-254 ; 03009440 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0300944019300244