INFLUENCE OF SILICA NANOPARTICLES ON THE PROPERTIES OF PAINT-AND-VARNISH COATING MADE OF PERCHLORVINYL ENAMEL
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INFLUENCE OF SILICA NANOPARTICLES ON THE PROPERTIES OF PAINT-AND-VARNISH COATING MADE OF PERCHLORVINYL ENAMEL V. Ts. Lygdenova , V. V. Syzrantsevb , S. P. Bardakhanovc,∗ , d
d
e
UDC 539.22; 539.24 e
L. Enkhtor , N. Tuvjargal , E. A. Paukshtis , and T. V. Larina
Abstract: Effect of nanosized silicon on mechanical properties, texture, and structure of a polymer paint-and-varnish coating made of gray KhV-16 enamel based on perchlorovinyl and glyphthalic resins is studied. It is established that the abrasion strength, hardness, and elastic modulus are larger than in the case of the original coating. Various methods are used to analyze the structure of the resulting samples of paint-and-varnish coatings. It is established that the structure changes and the mechanical properties of the coatings improve because of the formation of new structure-forming centers in the composite coating due to the addition of nanosized silica. Keywords: paint-and-varnish coating, nanosized silica, abrasion resistance, elastic modulus, hardness. DOI: 10.1134/S0021894420050259 INTRODUCTION There are various ways to improve the mechanical, thermal, electrical, and viscoelastic properties of composites, one of which is the application of reinforcing fillers, such as carbon, glass fibers, nanotubes, various nanoand microparticles, etc. Due to the small size of silica nanoparticles, their use as a dispersed filler in a polymer can be considered as a process of creating a material with new properties. Therefore, it is necessary to find out how the properties of a nanosized filler affect the mechanical characteristics of a polymer matrix based composite. Despite the fact that the properties of the materials of a matrix and a filler are generally well-known, it is rather difficult to accurately estimate the properties of a composite due to the influence of a large number of parameters on them. Therefore, empirical and semi-empirical models have been developed to calculate the characteristics of composites. In particular, an attempt has been made to determine the hardness of composite materials. For example, in [1], a model is presented for estimating the hardness and thermal expansion coefficient with account for a ratio between the length and the diameter of short fibers of the filler in the case of oriented reinforcement of the composite. In [2], a micromechanical continuum model is used for silica particles and composite materials based on polyimide, and the effect of interfacial regions on the properties of the composite is investigated.
a Buryat State University, Ulan-Ude, 670000 Russia; [email protected]. b Institute of Physical Materials Science, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, 670031 Russia; [email protected]. c Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia; ∗ [email protected]. d National University of Mongolia, Ulaanbaatar, 14201 Mongolia; [email protected]; [email protected]. e Boreskov Institute of Catalysis, Siberian Branch, Russian
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