Viscosity and electroviscous effect of the AgI sol. II. influence of the concentration of AgI and of electrolyte on the viscosity

“…As such, the model is independent of the filler properties. The Guth model [17], proposed in 1938 for predicting the elastic modulus of a composite, E, is given by:…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…In this paper, fundamentally different approaches for predicting the elastic modulus are considered. These models are: Guth model [17], modified Guth model [18], Halpin-Tsai model [19], [20], modified Halpin-Tsai model [21], [22] effective modulus model [23], [24], Ji et al model [25], and Hui-Shia model [26]. Some of these models are universally used for filler modified composites, including those reinforced by fiber-like or rod-like fillers [27]- [29].…”

Section: Introductionmentioning

confidence: 99%

Comparison Of The Elastic Modulus Of Elastomer Clay Nanocomposites Predicted By Various Mechanical Models

Dua¹,

Mertiny²

2021

Progress in Canadian Mechanical Engineering. Volume 4

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Nanoclays are considered as an ideal filler for polymer materials owing to their versatility, low cost, high aspect ratio, large surface area, cross-linking behavior and cation exchange capacity. When compared with conventional composites, clay/polymer nanocomposites exhibit enhanced diffusional barrier, fire retardant, ultraviolet resistant and mechanical properties. The elastic modulus reflects the ability of a material to resist elastic deformation and is thus an important parameter that characterizes the material mechanical properties. Its accurate prediction plays an important role in material design to tailor a material to suit a given application. A broad variety of analytical as well as numerical work has been performed to investigate the elastic modulus of clay reinforced polymer composites. The present paper carries out a review and comparison between various analytical models reported in the technical literature that take fundamentally different approaches for predicting the elastic modulus, namely, the Guth and modified Guth model, the Halpin-Tsai model and modified Halpin-Tsai model, the model by Ji et al., the Hui-Shia model, and the effective modulus model. Elastic modulus predictions from these models for clay/elastomer composites are contrasted and discussed taking into consideration experimental data from the technical literature.

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“…P. Mukerjee of the University of Southern California has drawn our attention to an error in Table III (p. 76) of the above-mentioned paper (1). The calculated values of the correction factor f from the modified Einstein equation ~re~ = 1 -k 2.5 q~ (1 -k f) [1] as given in columns 4-7 of Table III should be multiplied by about 100.…”

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confidence: 99%

“…One interpretation of the results was given in terms of a theoretical equation published by one of the present writers (2), the equation being In ~/r = 2.5~/(1 --~) [1] where nr is the relative viscosity, 9 is the volume fraction of the suspended spheres, and X is a parameter which measures the crowding interaction of the spheres with each other. The systems were not precisely monodisperse; and X must therefore be interpreted as an average value, since the crowding effect varies with the ratio of the sphere diameters.…”

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confidence: 99%