Abstract
Nanocomposite coatings have been deposited on plastic substrates by the dipping–drawing technique. The coatings were constituted by a matrice of a hybrid organomineral gel and a reinforcement made of amorphous silica. Two methods by which increase the silica content were investigated: silica was added via a silicon alkoxide compound or via dense silica particles of 10 nm size. Young's modulus and the hardness of the coating were measured using home-built equipment, and results compared to literature models. It is shown that the agreement between models and experimental values depends on the method of preparation of the nanocomposite coating. On the other hand, deviations appear when the volume fraction of reinforcement surpasses the three-dimensional percolation threshold.
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Etienne, P., Phalippou, J. & Sempere, R. Mechanical properties of nanocomposite organosilicate films. Journal of Materials Science 33, 3999–4005 (1998). https://doi.org/10.1023/A:1004609115560
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DOI: https://doi.org/10.1023/A:1004609115560