Mechanical properties of silica-(meth)acrylate hybrid coatings on polycarbonate substrate

The mech. properties of hybrid crosslinked coatings consisting of polymer (meth)acrylate matrixes with dispersed nano-sized silica inorg. particles were detd. The coatings were deposited on polycarbonate substrates. Reliable elastic modulus and hardness data can be obtained from load and depth sensing indentation for a broad range of filler content when an indentation rate above 2 nm/s is used. The influences of a variation in coating thickness, filler content and chem. compn. on these properties were combined with ATR-FTIR, TGA and TEM morphol. analyses of the coatings. These analyses showed that filler content and chem. compn. influence the mech. properties of the silica-(meth)acrylate hybrid coatings in a complex way. [on SciFinder (R)