Discrete element method to predict the mechanical properties of pigmented coatings

Dan Varney, Martti Toivakka, Doug Bousfield

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    Abstract

    The mechanical properties of pigmented coating layers are important in a variety of applications. However, the large number of parameters that influence these properties as well as the numerous types of deformations challenge the prediction of the performance of these systems. A discrete element method (DEM) is proposed to predict the mechanical properties of paper coating layers that have a range of starch and latex content. The model is developed in both 2D and 3D and is adapted to tensile and flexural deformations. The model predictions are compared to experimental results in the literature. The predictions are generally good for the moduli and the strain at failure of the systems, but underpredict the maximum stress. This result may be caused by the complex particle size distribution of the experimental systems or by the impact of the brittleness of the starch when making the freestanding films.
    Original languageUndefined/Unknown
    Pages (from-to)1683–1689
    Number of pages7
    JournalJournal of Coatings Technology and Research
    Volume16
    Issue number6
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Pigmented coating
    • cracking
    • Discrete element method

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