Nonlinear rheology of styrene-butadiene rubber filled with carbon-black or silica particles

Mongruel, Anne; Cartault, Marie

doi:10.1122/1.2167448

Cited by 48 publications

(38 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Above τ c , the curves are also superimposed, but this is due to the existence of a plateau. The same behavior may be seen on the results of Mongruel and Cartault , even though the authors did not discuss these two regimes. Gierlowski et al also observed on a pure SBR a similar behavior, but without a plateau.…”

Section: Resultsmentioning

confidence: 92%

“…Malkin et al proved for a SBR compound that wall slip was always observed at low temperature (70°C), whereas above 110°C, it occurred only above a critical shear stress of 0.3 MPa. Mongruel and Cartault investigated the effect of carbon black content on the rheological behavior of SBR in a temperature range from 70°C to 130°C. They proved that the time‐temperature superposition principle was valid whatever the filler content, with the same shift factor as for the pure rubber.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rheological behavior of uncured styrene-butadiene rubber at low temperatures, pure and filled with carbon black

et al. 2015

View full text Add to dashboard Cite

International audienceThe flow behavior of an uncured styrene-butadiene rubber (SBR) has been studied by using a specific preshearing capillary rheometer in the range of temperatures encountered in extrusion, i.e. between 40°C and 90°C. A pure SBR and various SBR compounds filled with different amounts of carbon black (from 17 to 33 wt%) have been characterized. It was observed, for all tested materials, that the flow curve could be divided in different parts: at low shear rate, the material exhibits a classical behavior, where stress increases regularly with the shear rate. Above a certain critical stress, flow features changed, characterized by the simultaneous onset of wall slip and upstream instabilities. This critical stress is independent of temperature but increases linearly with carbon black amount. Flow curves at different filler contents were superimposed, using a shift factor that varies with filler content. Two theories for time/filler content superposition were proposed. Finally, a general viscosity law for uncured SBR compounds was introduced. This law is based on a Carreau-Yasuda equation, where zero-shear viscosity and characteristic time depend on both temperature and filler content, through Arrhenius and Krieger-Dougherty expressions, respectively

show abstract

Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Rheological behavior of uncured styrene-butadiene rubber at low temperatures, pure and filled with carbon black

et al. 2015

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5] At strains substantially below where the neat polymer shows nonlinearity in its mechanical response, the nanocomposite becomes nonlinear. [1][2][3][5][6][7] The origin of these phenomena is poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Rheology and Microstructure of Entangled Polymer Nanocomposite Melts

Anderson¹,

Zukoski²

2009

Macromolecules

102

123

View full text Add to dashboard Cite

The rheology and microstructure of 44 nm diameter silica particles suspended in entangled poly(ethylene oxide) (PEO) melts are studied through measurement of filled melt viscosity and X-ray scattering measurement of interparticle structure factors, S(q,φ c ), where q is the scattering vector and φ c is the silica volume fraction. The particles have a similar refractive index to PEO which minimizes van der Waals attractions acting between particles. The introduction of particles causes an elevation in the viscosity of the nanocomposite melt more than would be expected of particles merely interacting with hard core repulsions. Further addition of particles causes a rise in the elastic and viscous moduli. The rheological characterization of these nanocomposite melts is discussed in terms of several critical particle volume fractions that result from confinement of polymer, adsorption of polymer segments to the particle surface, and overlap and entanglement of adsorbed polymer as the particle volume fraction is increased. Characterization of the particle microstructure shows that the association of the polymer with the particles drives the particles to structure more than would be expected of particles with interactions governed merely by hard core repulsions. Particles show signs of instability in the polymer melt at a common elevated volume fraction independent of polymer molecular weight.

show abstract

“…Modified-clay nanocomposites exhibited a lower die swell than unmodified nanocomposites, which was attributed to better dispersion/exfoliation of modified-clay in the rubber matrix. Most importantly, here will show that the extrudate swell of the composite can be expressed as that of the corresponding matrix polymer multiplied by a coefficient which is similar to the concentration shift factor used in describing the dynamic modulus variation with the filler loading level [15]. …”

Section: Introductionmentioning

confidence: 99%

Description of Extrudate Swell for Polymer Nanocomposites

Wang

2010

Materials

View full text Add to dashboard Cite

Extrudate swell is often observed to be weakened in nanocomposites compared to the pure polymer matrix. A theory quantifying this would be significant either for optimum processing or for understanding their viscoelasticity. A unified extrudate swell correlation with material properties and capillary parameters was suggested for polymer melt and their nanocomposites when considering the reservoir entry effect. More importantly, it was the first to find that the composite swell ratio can be the matrix swell ratio multiplied by the concentration shift factor, which is similar to the dynamic moduli expression for composites. The factor is a function of the shear field (stress or shear rate), filler content, filler internal structure and the surface state as well as the matrix properties. Several sets of swell data for nanocomposites were chosen from publications to test the new theories. The proposed quantitative model displayed good fit for the five kinds of nanocomposites, which verified the rationality of the swell theory for nanocomposites.

show abstract

Nonlinear rheology of styrene-butadiene rubber filled with carbon-black or silica particles

Cited by 48 publications

References 25 publications

Rheological behavior of uncured styrene-butadiene rubber at low temperatures, pure and filled with carbon black

Rheological behavior of uncured styrene-butadiene rubber at low temperatures, pure and filled with carbon black

Rheology and Microstructure of Entangled Polymer Nanocomposite Melts

Description of Extrudate Swell for Polymer Nanocomposites

Contact Info

Product

Resources

About