Electrical and physical properties of ethylene—propylene—diene monomer (EPDM) rubber loaded with semi-reinforcing furnace black

Evaluation of Polyester Resin as a New Compatibilizer for SBR/PVC Blends

“…This region is found to be in fair agreement with previous results (Saad et al, 1999;Younan et al, 1992;Hanna et al, 1992;Abd-El-Nour et al, 1992). It is evident from Table 4 that the relaxation time τ 2 associated with the second relaxation mechanism is independent of SBR content in the blend.…”

Dielectric relaxation and mechanical investigation of ethylene propylene diene monomer rubber with some crosslinking additives

“…6 The values of Ј are comparable with those found in the literature. 7 The variation of Љ with the applied frequency given in Figure 2 indicates that more than one relaxation process is present. The data were satisfactorily described by a combination of three Fröhlich terms according to the Fröhlich equation.…”

“…Both regions are found to be in fair agreement with that detected in the literature. [7][8][9] The aim of the present investigation is to study the effect of the addition of zinc chloride and ammonium iodide as crosslinking coagents in conjunction with the full ingredients to cure EPDM. For such purposes, different ratios from zinc chloride (4 -16 phr) and ammonium iodide (1-8 phr) were added to the same investigated sample that contained 35 phr SRF black.…”

A Study on the Compatibility of NR-EPDM Blends Using Electrical and Mechanical Techniques

“…Some absorption curves for the dielectric loss " 00 in Figures 10(b)-13(b) show second absorption region, in the higher frequency range, which can be attributed to the large aggregates owing to the polarity of the ingredients added to the raw rubber [17].…”

“…These results in turn, are in agreement with those obtained from physicomechanical studies and the scanning electron micrographs of the blend vulcanizates in the absence of any compatibilizers. The absorption curves for the dielectric loss " 00 in Figures 10(b)-13(b) indicate that the main absorption region has a maximum %3 kHz (Log f % 3.5), and may be due to the Maxwell-Wagner effect (" 00 MW ), which is due to an AC current that is in phase with the applied potential [17]. This is due to the difference in conductivities and permittivities of the substances composing the samples [11].…”