Investigations of the rheological behavior of rubber-carbon black compounds over a wide range of stresses including very low stresses

Osanaiye, Gabriel J.; Leonov, A. I.; White, James L.

doi:10.1016/0377-0257(93)85024-5

Cited by 24 publications

(3 citation statements)

References 17 publications

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“…Rheological properties of CB/polymer compounds and CB suspensions are very important from both academic and industrial points of view. In attempting to elucidate these rheological responses, extensive studies have been carried out for the CB/polymer compounds1–11 and CB suspensions 12–30. The occurrence of both yield stress and thixotropy for these systems has been found.…”

Section: Introductionmentioning

confidence: 99%

Rheological characterization of carbon black/polystyrene solution systems

Aoki

2008

J of Applied Polymer Sci

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Steady-shear measurements of suspensions of carbon blacks (CB) in polystyrene (PS)/di-(butyl phthalate) (DBP) solution were investigated as a function of volume fraction (/) of CB to clarify the effect of the primary particle size and the structure of CB aggregates on the rheological properties. The suspensions show a typical shear-thinning behavior in the range of a shear rate studied. The Casson model was applied to evaluate the viscosity at infinite of shear rate h ' and the yield stress r y for the suspensions. Relative viscosity h ' /h m , (h m : medium viscosity) thus obtained was compared to the high-frequency viscosity for the ideal hard-sphere silica suspensions to evaluate the effective volume fraction / eff of CB aggregates. The / eff value was larger for the higher-structure CB with higher DBP absorption value, irrespective of the primary particle size. The yield stress r y had almost the same / eff dependence for neutral furnace CB/(PS/ DBP) suspensions, although it was larger for acetylene black (AcB)/(PS/DBP) suspensions. These results demonstrated that the effective volume fraction is the most important quantity to characterize the CB aggregates on the rheological properties. It was also found that the correction of the medium viscosity changes due to polymer adsorption on the CB surface is important since neutral furnace CB adsorbs PS polymers but AcB hardly adsorbs PS polymers in the solution.

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Section: Introductionmentioning

confidence: 99%

Rheological characterization of carbon black/polystyrene solution systems

Aoki

2008

J of Applied Polymer Sci

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“…The hypothesis of Scott [S5] that highly filled elastomers exhibited yield values was confirmed by Bartenev and his co-workers [Zl] as well as by Vinogradov et al [V3, V4] (both in Moscow) and later by others [M33,M37,O10,Sll,T7,W28]. Yield values also found to occur by subsequent researchers for thermoplastics filled with a wide variety of particles including talc (C8), titanium dioxide [M2,M29,Tl] calcium carbonate [M2,S25,Tl], as well as carbon black [L14, M3,Tl].…”

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confidence: 67%

Rheological Behavior and Processing of Unvulcanized Rubber

White

1994

Science and Technology of Rubber

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“…Since the electrode-slurry is a solid dispersion system, it was treated as a non-Newtonian fluid. 28,29 Table 1 shows the thixotropic index (TI) determined from the steady-flow viscosity at 0.01 s -1 and 1 s -1 . In this study, TI is defined as (t = 0.01 s −1 )/ (t = 1 s −1 ) since the steady-flow viscosities in the lower shear range were different in each process.…”

Section: Resultsmentioning

confidence: 99%

Relation between Mixing Processes and Properties of Lithium-ion Battery Electrode-slurry

et al. 2021

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The mixing process of electrode-slurry plays an important role in the electrode performance of lithium-ion batteries (LIBs). The dispersion state of conductive materials, such as acetylene black (AB), in the electrode-slurry directly influences the electronic conductivity in the composite electrodes. In this study, the relation between the mixing process of electrode-slurry and the internal resistance of the composite electrode was investigated in combination with the characterization of the electrode-slurries by the rheological analysis and the alternating current (AC) impedance spectroscopy. Some of the electrode-slurries showed higher value and gentler slope of the dynamic storage modulus in the low-angular-frequency region and higher thixotropic index than the others depending on the way of the mixing process and the AB content, agreeing with the low electronic volume resistivities of the corresponding composite electrodes and the electrode-slurries, which indicates the AB network growth. The results suggested that the low-viscosity state when AB and active electrode material are mixed contributes to the dispersive AB network.

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Investigations of the rheological behavior of rubber-carbon black compounds over a wide range of stresses including very low stresses

Cited by 24 publications

References 17 publications

Rheological characterization of carbon black/polystyrene solution systems

Rheological characterization of carbon black/polystyrene solution systems

Rheological Behavior and Processing of Unvulcanized Rubber

Relation between Mixing Processes and Properties of Lithium-ion Battery Electrode-slurry

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