Abstract:This paper deals with the study of cellular rubbers, which were filled with silica nanofiller in order to optimize the rubber properties for given purposes. The rubber composites were produced with different concentrations of silica nanofiller at the same blowing agent concentration. The mechanical, sound absorption and thermal properties of the investigated rubber composites were evaluated. It was found that the concentration of silica filler had a significant effect on the above-mentioned properties. It was … Show more
“…Low hardness of the composites can also be attributed to the high resilience of the same . 38 Generally, resilience decreases with the increase in hardness and hence the resilience results are in agreement with the hardness results (Figure 11). Moreover, It can be concluded that higher Cu-g-graphite loadings in NR composites lead to higher ability to transform mechanical energy into heat, and thus to a decrease in the rebound resilience.…”
Section: Resultssupporting
confidence: 85%
“…Similar observations have been reported for silica nanofiller filled cellular rubber composites. 38 Figure 11.Resilience of Cu-g-graphite/NR composites.…”
Section: Resultsmentioning
confidence: 99%
“…Similar observations have been reported for silica nanofiller filled cellular rubber composites. 38 Tear strength and tensile properties of Cu-g-graphite/NR composites after ageing Table 3 shows the tear strength and tensile properties, after ageing of the control, and the other NR composites prepared with different Cu-g-graphite loadings. The composite prepared with a Cu-g-graphite loading of 10 phr has shown a higher percentage retention of elongation at break.…”
Section: Physico-mechanical Properties Of Cu-g-graphite/nr Compositesmentioning
Conductive polymer composites, which are extensively applied in the fields of sensors, batteries, memory materials, etc. possess some significant properties mainly high electrical conductivity and good mechanical performance. In this study, copper (Cu) was grafted onto the graphite surface according to a chemical process. The Cu-grafted graphite (Cu-g-graphite) was characterized via fourier transform infrared spectroscopy (FTIR), X-ray diffraction spectroscopy (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM), where the analysis proved that Cu was successfully grafted onto the graphite surface. Subsequently, natural rubber (NR) composites were prepared by varying the Cu-g-graphite loading from 0 phr (parts per hundred rubber) to 10 phr at 2 phr intervals. The 8 phr Cu-g-graphite filled NR composite showed better physico-mechanical properties in comparison with the other Cu-g-graphite composites and the NR composite prepared without Cu-g-graphite (control). Also, the former composite showed better thermal ageing and electrical conductivity which are requirements for sensor applications. Further, electrical conductivity of the Cu-g-graphite/NR composites prepared with greater than 4 phr loading of Cu-g-graphite was at a high level. Furthermore, the Cu-g-graphite filled NR composites indicated a remarkable improvement in electrical conductivity compared to that of the control. Finally, the performance of NR composite prepared with 8 phr loading of Cu-g-graphite in overall showed a considerable level of applicability for high electrical, thermal and physico-mechanical polymeric applications.
“…Low hardness of the composites can also be attributed to the high resilience of the same . 38 Generally, resilience decreases with the increase in hardness and hence the resilience results are in agreement with the hardness results (Figure 11). Moreover, It can be concluded that higher Cu-g-graphite loadings in NR composites lead to higher ability to transform mechanical energy into heat, and thus to a decrease in the rebound resilience.…”
Section: Resultssupporting
confidence: 85%
“…Similar observations have been reported for silica nanofiller filled cellular rubber composites. 38 Figure 11.Resilience of Cu-g-graphite/NR composites.…”
Section: Resultsmentioning
confidence: 99%
“…Similar observations have been reported for silica nanofiller filled cellular rubber composites. 38 Tear strength and tensile properties of Cu-g-graphite/NR composites after ageing Table 3 shows the tear strength and tensile properties, after ageing of the control, and the other NR composites prepared with different Cu-g-graphite loadings. The composite prepared with a Cu-g-graphite loading of 10 phr has shown a higher percentage retention of elongation at break.…”
Section: Physico-mechanical Properties Of Cu-g-graphite/nr Compositesmentioning
Conductive polymer composites, which are extensively applied in the fields of sensors, batteries, memory materials, etc. possess some significant properties mainly high electrical conductivity and good mechanical performance. In this study, copper (Cu) was grafted onto the graphite surface according to a chemical process. The Cu-grafted graphite (Cu-g-graphite) was characterized via fourier transform infrared spectroscopy (FTIR), X-ray diffraction spectroscopy (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM), where the analysis proved that Cu was successfully grafted onto the graphite surface. Subsequently, natural rubber (NR) composites were prepared by varying the Cu-g-graphite loading from 0 phr (parts per hundred rubber) to 10 phr at 2 phr intervals. The 8 phr Cu-g-graphite filled NR composite showed better physico-mechanical properties in comparison with the other Cu-g-graphite composites and the NR composite prepared without Cu-g-graphite (control). Also, the former composite showed better thermal ageing and electrical conductivity which are requirements for sensor applications. Further, electrical conductivity of the Cu-g-graphite/NR composites prepared with greater than 4 phr loading of Cu-g-graphite was at a high level. Furthermore, the Cu-g-graphite filled NR composites indicated a remarkable improvement in electrical conductivity compared to that of the control. Finally, the performance of NR composite prepared with 8 phr loading of Cu-g-graphite in overall showed a considerable level of applicability for high electrical, thermal and physico-mechanical polymeric applications.
“…In [1], the authors investigated the mechanical, acoustic, and thermal properties of cellular rubber composites, which were produced with different concentrations of silica nanofillers at the same blowing agent concentration. It was found that a higher concentration of silica nanofillers generally led to an increase in the mechanical stiffness and thermal conductivity and to a decrease in the sound absorption and thermal degradation of the investigated rubber composites.…”
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