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Preparation and characterization of UV‐curable, boron‐containing, transparent hybrid coatings
Author(s) -
Mülazim Yusuf,
Kahraman Memet Vezir,
Apohan, Nilhan Kayaman,
Kızıltaş Sahip,
Güngör Atilla
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33358
Subject(s) - materials science , contact angle , thermal stability , boron , composite material , boric acid , chemical resistance , limiting oxygen index , chemical engineering , organic chemistry , char , chemistry , pyrolysis , engineering
A series of ultraviolet (UV)‐curable, boron‐containing hybrid coatings were prepared by an anhydrous sol–gel technique from a mixture of an acrylated bisphenol A based epoxy resin, methacryloxymethyl triethoxysilane, and boric acid. The use of boric acid allowed the hydrolysis and condensation of hybrid silicon alkoxides without the further addition of water or a catalyst. The chemical structure of the boron‐containing hybrid coatings was characterized with Fourier transform infrared, real‐time infrared, and 29 Si cross‐polarization/magic‐angle spinning NMR techniques. UV‐curable coatings were applied to polycarbonate and Plexiglas substrates. The physical and mechanical properties of the UV‐cured coatings (e.g., pendulum hardness, pencil hardness, contact angle, gel content, methyl ethyl ketone rubbing test, tensile test, abrasion resistance, chemical resistance, neutron absorption, and limiting oxygen index) were examined. The hybrid coatings showed a significant enhancement in their radiation‐shielding properties. The thermal behavior of the coatings was also evaluated. It was observed that the thermal stability of the coatings mainly depended on their boron and silicate contents. The results of all analyses of the free films and coatings were examined. © 2010 Wiley Periodicals, © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011