Issue 41

E. Nurullaev et alii, Frattura ed Integrità Strutturale, 41 (2017) 369-377; DOI: 10.3221/IGF-ESIS.41.48 369 Dependence of mechanical characteristics from composition and structure and optimization of mechanical fracture energy of polymer composite material based on high-molecular rubbers E. Nurullaev, A. S. Ermilov, N. Yu. Lyubimova Perm National Research Polytechnic University, Russia ergnur@mail.ru , ermilov@tpmp.perm.ru , ninalu76@mail.ru A BSTRACT . By means of numerical experiment the authors investigate dependence of conventional rupturing stress and mechanical fracture energy at uniaxial tension from fractional composition of dispersed filler, plasticizer volume fraction in polymer binder, effective density of transverse bonds, applied to development of covering for different purposes and with advanced service life in temperature range from 223 to 323 K. They compare mechanical characteristics of polymer composite materials (PCMs) based on high- and low-molecular rubbers. It was shown that rupturing stress of high-molecular rubber-based PCM is of a higher magnitude than the stress of low-molecular rubber-based one at almost invariable rupturing deformation. Numerical simulation by variation of composition parameters and molecular structure enables evaluation of its maximum fracture energy which is 1000 times higher than mechanical fracture energy of similar composites based on low-molecular rubbers. K EYWORDS . High-molecular rubbers; Deformation; Composites; Mechanical stress; Envelopes of fracture points; Optimization; Plasticizer; Polymer composite; Linking; Glass transition temperature. Citation: Nurullaev, E., Ermilov, A. S., Lyubimova, N. Yu., Dependence of mechanical characteristics from composition and structure and optimization of mechanical fracture energy of polymer composite material based on high-molecular rubbers, Frattura ed Integrità Strutturale, 41 (2017) 369-377. Received: 28.11.2016 Accepted: 06.05.2017 Published: 01.07.2017 Copyright: © 2017 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. I NTRODUCTION ractional composition of dispersed filler is very essential both for formation of rheological properties of suspensions based on viscous-liquid polymer binders and mechanical characteristics of 3D-linked filled polymer composite materials (PCMs). At that basic formulation parameter is effective extent of volume filling –   / m , where  is volume fraction of filler solids,  m - maximum volume filling depending on particle shape, fractional composition and physicochemical interaction on filler – binder interface. F