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Fabrication of Transparent UV-Cured Coatings with Allyl-Terminated Hyperbranched Polycarbosilanes and Thiol Silicone Resins.


ABSTRACT: To improve thermal stability and hardness of UV-cured materials, a series of UV-cured solvent-free coatings were prepared from allyl-terminated hyperbranched polycarbosilanes and thiol silicone resins. The silicone coatings prepared have pencil hardness of 4–9 H, water absorption no more than 0.04 wt %, and transmittance higher than 94%. The temperature for the coatings’ starting thermal decomposition is higher than 236 °C; especially, that of the coating prepared with G1 is as high as 371.1 °C. The UV-cured coatings in this work exhibit much higher pencil hardness than and superior thermal stability to those reported previously.

SUBMITTER: Wu Y 

PROVIDER: S-EPMC7331026 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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