Issue 31

E.M. Nurullaev et alii, Frattura ed Integrità Strutturale, 31 (2015) 120-126; DOI: 10.3221/IGF-ESIS.31.09 120 Dependence of the mechanical fracture energy of the polymeric composite material from the mixture of filler fractions E. M. Nurullaev, A. S. Ermilov Perm National Research Polytechnic University, Perm, Russia. 614990 Perm, Komsomol prospect, 29 ergnur@mail.ru A BSTRACT . This paper for the first time presents an equation for calculating the mechanical fracture energy of the polymeric composite material (PCM) with regard to the basic formulation parameters. By means of the developed computer program the authors calculated the mechanical fracture energy of the polymer binder of the 3D cross-linked plasticized elastomer filled with multifractional silica. The solution of the integral equation was implemented using the corresponding dependence of stress on relative elongation at uniaxial tension. Engineering application of the theory was considered with respect to asphalt road covering. The authors proposed a generalized dependence of ruptural deformation of the polymer binder from the effective concentration of chemical and physical (intermolecular) bonds for calculating the mechanical fracture energy of available and advanced PCMs as filled elastomers. K EYWORDS . Energy failure; Elastomeric; Particulate filler; Binder; Polymer composite material. I NTRODUCTION owadays, the current issue of technical chemistry is to ensure the required deformation and strength characteristics of advanced polymeric composite materials, in particular, 3D cross-linked filled plasticized elastomers. So far, to estimate the effect of the basic formulation parameters on the mechanical properties of such materials at uniaxial tension, Smith failure envelopes have been widely used [1-4]. However, this approach does not fully reflect the physical nature of the failure (or fracture) process. Therefore, it is interesting to derive an equation for calculating the mechanical fracture energy as a composite performance indicator of 3D cross-linked polymeric composite materials. The objective of this paper is a mathematical derivation of the equation for calculating the mechanical fracture energy of polymeric composite materials with regard to the basic formulation parameters by integrating the equation that describes the curve of uniaxial tension. In addition, by means of the computer program the authors calculated the mechanical fracture energy of a 3D cross- linked plasticized elastomer filled with multifractional silica. It is of practical interest for asphalt road covering as it greatly increases the service life of road pavements. N