Akademik Veri Yönetim Sistemi
Bulgarian Chemical Communications, cilt.55, sa.3, ss.214-223, 2023 (Scopus)
In this study, natural rubber and EPDM rubber were reinforced with multi-walled carbon nanotubes (MWCNTs) by three different methods. These methods are homogenous mixing, spraying and hand laying methods. The rheological and mechanical properties of two different rubbers produced by the three different methods were examined. As a result, six samples of nano composite material with different rheological properties were produced. The maximum torque (MH), the minimum torque (ML), the start time (tc10), the time of vulcanization (tc90) and the time of early scorch were calculated from the rheological properties. The mechanical behavior of MWCNTs reinforced rubber samples was determined by tensometer test in two different ways in tensile and compression directions. As a result of this experiment, it was observed that the difference in tensile and compressive load is that the rubber has a hysteretic structure and doesn’t lose elasticity. Torsional stiffness (Kt) torque - angle (N rad-1) values were found. Although torsion joint of EPDM rubber differs in three methods, this difference hasn’t been observed in natural rubber. The hardness values of MWCNTs reinforced mixtures were tested in shore form and it was stated that these values could not be related to torsional stiffness. The natural frequency test was performed with a hammer and natural frequencies of the system (without rubber) and variable natural frequencies in the system when EPDM and natural rubber were observed. It was determined that the vibration damping of nano-particle reinforced EPDM rubber is different from that of natural rubber.