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It is shown that the addition of coiled carbon nanotubes (CCNTs), to polymer matrices confers a two-fold increase of the relative electrical permittivity, in addition to an improvement in the mechanical characteristics. A four-fold augmentation of the elastic modulus and a two-fold improvement in the ultimate tensile strength (compared to the polymer) at ∼2 vol% filler fractions was also obtained...
The relations of Mori–Tanaka (M–T) model for thermal expansion coefficients (CTEs) of composites are derived following a regular procedure to compare with other two different expressions of M–T model often used for modeling thermal properties of nanocomposites. It is verified that by correcting the related parameters mis-determined all the relations are consistent and can provide same predicting results...
Electrically and thermally conductive elastomers are highly desired in industries, since they can prevent static electricity accumulation and reduce internal heat build-up. Previous methodologies using carbon black, metal nanoparticles and carbon nanotubes are either ineffective or expensive. By contrast, we in this study developed electrically and thermally conductive, high-mechanical performance...
In this morphological study the dispersion and localization behavior of 1 wt.% graphene nanoplatelets (GnPs) in melt mixed co-continuous polymer blends of polycarbonate (PC, 59 wt.%) and poly(styrene-acrylonitrile) (SAN, 40 wt.%) were investigated. Through varying the mixing sequence as well as the melt mixing parameters, different states of dispersion and different filler localizations were achieved...
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