Instrumented flat indentation on polyester nanocomposite coatings

摘要

Polyester-montmorillonite nanocomposite coatings were prepared by the in situ intercalative polymerisation method and deposited on aluminium (Al) and High-Density Polyethylene (HDPE) substrates by the spin coating method. A fast fabrication procedure was utilised, as 1 h was sufficient to prepare each coated sample. Different coating thicknesses and filler contents were considered for the experimentation. Mechanical tests were carried out on the nanocomposite coatings by macro-indentation with a 2 mm flat punch made of tungsten carbide. An increase in the coating strength was measured up to 3 wt% nanoclay content for both the thicknesses and substrates.