Hydrophobic anti-scratch coatings on glass

A new study deals with the facile design and fabrication of highly transparent and hydrophobic coatings on glass with anti-scratch property via surface dewetting.

Scientists found a new way to fabricate hydrophobic anti-scratch coatings on glass. Source: blackday – stock.adobe.com. -

Highly transparent hydrophobic coatings with scratch-resistant property attract tremendous interest from both scientific research and practical applications. A new study demonstrates that hydrophobic coatings with high transmittance and anti-scratch performance on glass substrates can be easily created by dewetted epoxy structures in large scale, followed by the attachment of a low surface energy material. The influence of epoxy solution concentrations on the surface dewetted structures, as well as the hydrophobicity and transmissivity of glass substrates were investigated.

Large-scale fabrication possible

It was found that the epoxy solution concentration of 5% combined with a low surface energy material coating on glass exhibited the highest contact angle of ∼113°. UV–vis spectrum studies indicated that the coatings fabricated by the new method had almost the same transmittance as that of the glass substrate. In addition, nano-scratch test illustrated that the prepared coating was capable of delaying crack generation, further strengthening the glass surfaces. Furthermore, the approach also facilitates the large-scale fabrication of hydrophobic anti-scratch coatings on glass as demonstrated by the preparation of mobile phone screen coatings.

The detailed mechanism of large-scale hydrophobic coatings on glass with high transmission and anti-scratch performance was carefully elaborated.

The study is published in: Progress in Organic Coatings Volume 120, July 2018, Pages 28-35.

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