Chao-Chin Chang1,2, Tsung-Ying Tsai1 and Liao-Ping Cheng This email address is being protected from spambots. You need JavaScript enabled to view it.1,2

1Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taiwan 25137, R.O.C.
2Energy and Opto-Electronic Materials Research Center, Tamkang University, Tamsui, Taiwan 25137, R.O.C.


Received: May 31, 2018
Accepted: October 2, 2018
Publication Date: March 1, 2019

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Superhydrophilic UV-curable nanosilica particles were synthesized through reaction of the surfactant, Tween-20, and the C=C containing silane, MSMA, with silica nanoparticles synthesized from hydrolysis and condensation of tetraethoxysilane in an acid catalyzed sol-gel process. The formed organic/inorganic hybrid nanoparticles were used to prepare antifog (AF) coatings with a special hydrophilic/hydrophobic bi-layer structure on polycarbonate (PC) substrates. The coatings were transparent, adhered strongly to the substrate, and demonstrated superb AF capability on steam tests. The hardness of the coatings reached 1H in the optimal case, considerably higher than that of the PC substrate (2B). After immersed in water for 24 h at 25 C, this coating still demonstrated good AF capability; however, it took longer time (2 min) to retain transparency on the steam test.

Keywords: Anti-fogging, Silica, Nanocomposite, Coatings


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