Influence of carbon black on uncompatibilised and compatibilised SBR–NBR blends

Ramesan, M. T.; Premalatha, C. K.; Alex, Rosamma

doi:10.1179/146580101101541732

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…Reduced elongation at break is considered as criteria for higher filler reinforcement. 29 The decrease in elongation at break also due to the attractive forces between the filler and rubber leads to the formation of cross-linked network structure that restricts the free mobility of the polymer chain and thus increases the resistance to stretching upon the application of strain. Hardness (Table 5) of material is a complex property that indirectly depends on the dosage of filler and the mechanical properties.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Processing characteristics and mechanical and electrical properties of chlorinated styrene–butadiene rubber/fly ash composites

Ramesan

2013

Journal of Thermoplastic Composite Materials

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This work focused on the utilization of waste fly ash (FA) as filler in the reinforcement of chlorinated styrene-butadiene rubber (CSBR) with reference to their processing characteristics, morphological, thermal, and mechanical properties, solvent resistance, and electrical resistivity measurements. Rheometric properties such as optimum cure time and scorch time decreases with increase in filler content, whereas maximum torque increases up to 30 phr for FA particles. An appreciable increase in glass transition temperature has been observed from differential scanning calorimetric study. The mechanical properties such as tensile and tear strength, modulus, hardness, compression set, and heat buildup increases, whereas elongation at break and resilience decreases with loading of filler. The observed variation in mechanical properties has been supported by the fractography of the composites obtained by scanning electron microscopy. Variation in the bound rubber formation in CSBR/FA composite has been studied. The bound rubber content decreases with increasing extraction temperature, and its activation energy is also calculated from the Arrhenius plot. The electrical properties such as alternating current conductivity, dielectric constant, and dissipation factor are higher than that of CSBR, and the values increase with increase in the content of FA in the composites.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Processing characteristics and mechanical and electrical properties of chlorinated styrene–butadiene rubber/fly ash composites

Ramesan

2013

Journal of Thermoplastic Composite Materials

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“…18 In addition, certain metals have the catalytic effect on the cure reaction. 20 Minimum torque is the shear force acting on the composite before the complete vulcanization and it is related to viscosity. 20 Minimum torque is the shear force acting on the composite before the complete vulcanization and it is related to viscosity.…”

Section: Cure Characteristicsmentioning

confidence: 99%

“…19 The reduction in optimum cure time may possibly due to the increased thermal conductivity of the composite system, resulting from the formation of conductive chains between the filler and polymer. 20 Minimum torque is the shear force acting on the composite before the complete vulcanization and it is related to viscosity. Viscosity of the polymer composite depends on mixing and the type of filler.…”

Section: Cure Characteristicsmentioning

confidence: 99%

Fabrication, characterization, and properties of poly(ethylene‐co‐vinyl acetate)/magnetite nanocomposites

Ramesan

2013

J of Applied Polymer Sci

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Poly(ethylene-co-vinyl acetate) (EVA)/magnetite (Fe 3 O 4 ) nanocomposite was prepared with different loading of Fe 3 O 4 nanoparticles. The mixing and compounding were carried out on a two-roll mixing mill and the sheets were prepared in a compressionmolding machine. The effect of loading of nanoparticles in EVA was investigated thoroughly by different characterization technique such as transmission electron microscopy (TEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), limiting oxygen index (LOI), and technological properties. TEM analysis showed the uniform dispersion of filler in the polymer matrix and the dispersion of filler decreased with increase in filler content. XRD of the nanocomposite revealed the more ordered structure of the polymer chain. An appreciable increase in glass transition temperature was observed owing to the restricted mobility of Fe 3 O 4 -filled EVA nanocomposite. TGA and flame resistance studies indicated that the composites attain better thermal and flame resistance than EVA owing to the interaction of filler and polymer segments. Mechanical properties such as tensile strength, tear resistance, and modulus were increased for composites up to 7 phr of filler, which is presumably owing to aggregation of Fe 3 O 4 nanoparticle at higher loading. The presence of Fe 3 O 4 nanoparticles in the polymer matrix reduced the elongation at break and impact strength while improved hardness of the composite than unfilled EVA. The change in technological properties had been correlated with the variation of polymer-filler interaction estimated from the swelling behavior.

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“…by Markvic 18 and coworkers are some of the recent works in polymer research. Ramesan et al 19 studied the influence of carbon black on uncompatibilized and compatibilized SBR/NBR blends. Their studies reveal that compatibilized blends show enhanced mechanical properties in the presence of high-abrasion furnace (HAF) black in comparison with uncompatibilized samples.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and aging properties of cross‐linked ethylene propylene diene rubber / styrene butadiene rubber blends

Nair

Kumaran

Unnikrishnan

2004

J of Applied Polymer Sci

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ABSTRACT:The mechanical properties and aging characteristics of blends of ethylene propylene diene monomer (EPDM) rubber and styrene butadiene rubber (SBR) were investigated with special reference to the effect of blend ratio and cross-linking systems. Among the blends, the one with 80/20 EPDM/SBR has been found to exhibit the highest tensile, tear, and abrasion properties at ambient temperature. The observed changes in the mechanical properties of the blends have been correlated with the phase morphology, as attested by scanning electron micrographs (SEMs). The effects of three different cure systems, namely, sulfur (S), dicumyl peroxide (DCP), and a mixed system consisting of sulfur and peroxide (mixed) on the blend properties also were studied. The stress-strain behavior, tensile strength, elongation at break, and tear strength of the blends were found to be better for the mixed system. The influence of fillers such as high-abrasion furnace (HAF) black, generalpurpose furnace (GPF) black, silica, and clay on the mechanical properties of 90/10 EPDM/SBR blend was examined. The ozone and water aging studies also were conducted on the sulfur cured blends, to supplement the results from the mechanical properties investigation.

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Influence of carbon black on uncompatibilised and compatibilised SBR–NBR blends

Cited by 7 publications

References 14 publications

Processing characteristics and mechanical and electrical properties of chlorinated styrene–butadiene rubber/fly ash composites

Processing characteristics and mechanical and electrical properties of chlorinated styrene–butadiene rubber/fly ash composites

Fabrication, characterization, and properties of poly(ethylene‐co‐vinyl acetate)/magnetite nanocomposites

Mechanical and aging properties of cross‐linked ethylene propylene diene rubber / styrene butadiene rubber blends

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