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Saturday, 20 April 2019
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Raw materials & technologies

Transparent hard self-cleaning nano-hybrid coating on polymeric substrate

Wednesday, 6 February 2019

In a current research project, GPTMS-silica nano-hybrid coatings were immobilised on polycarbonate (PC) substrates by a sol-gel method.

The results indicated that the formation of the nano-hybrid film improved the hardness and transmittance of the PC substrate. Source: falconsoft / Pixabay.
The results indicated that the formation of the nano-hybrid film improved the hardness and transmittance of the PC substrate. Source: falconsoft /...

Perfluorooctyl-trichlorosilane (PFTS) was utilised to modify the prepared nano-hybrid coating surface. The modified nano-hybrid coatings were characterised by Field Emission Scanning Electron Microscope (FE-SEM), Energy Dispersive X-ray Spectrometry (EDS), atomic force microscopy (AFM), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), UV–vis-NIR spectrophotometer, and water contact angle analyser methods.

Improvement of hardness and transmittance of the PC substrate

In addition, the self-cleaning properties of the nano-hybrid coatings were investigated. The results indicated that the formation of the nano-hybrid film improved the hardness and transmittance of the PC substrate. FE-SEM image indicated the formation of the crack free coating on the PC substrate. In addition, the modified nano-hybrid coating displays hydrophobicity (CA, 110°) and is very efficient at removing dust through water droplets.

The study is published in: Progress in Organic Coatings Volume 128, March 2019, Pages 120-126.

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