Abstract
Commercial thermoplastic plasticized polymer films based on polyvinyl acetate of different chemical compositions and composite metal-viscoelastic polymer film-metal three-layer materials were studied by dynamic mechanical analysis. The dependences of the mechanical loss coefficient and elastic modulus of polymer films on temperature and strain frequency at dynamic extension were determined experimentally. The temperature intervals of efficient damping were determined. In these intervals, the mechanical loss coefficient of each polymer film exceeds 0.5 for the frequency range 1–10 000 Hz. The dissipative properties of polymer films and composite materials based on them were compared. The mechanical loss coefficients of the films materials are higher than those of the composite materials, but the composite materials have higher mechanical loss moduli. Their absolute values at the maximum-damping temperature reach ∼1011 Pa and more, which allows using them as effective vibration-damping coatings.
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Russian Text © The Author(s), 2019, published in Zhurnal Prikladnoi Khimii, 2019, Vol. 92, No. 7, pp. 881–887.
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Skuratova, T.B., Kirillov, S.E. & Syatkovskiy, A.I. Dissipative Properties of Polymer Films and Composite Materials Based on Polyvinyl Acetate. Russ J Appl Chem 92, 952–957 (2019). https://doi.org/10.1134/S1070427219070115
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DOI: https://doi.org/10.1134/S1070427219070115