Results 211 to 220 of about 51,498 (253)
Effects of High-Temperature Storage on the Elasticity Modulus of an Epoxy Molding Compound [PDF]
Materials, 2019 Changes in the elasticity modulus of an epoxy molding compound (EMC), an electronic packaging polymer, under high-temperature air storage conditions, are discussed in this study. The elasticity modulus of EMC had two different compositions (different filling contents) under different temperatures (175, 200, and 225 °C) and aging times (100, 500, and ...
Ping Zhang, Miao Cai, Ping Zhang
exaly +3 more sources
Storage modulus and glass transition behaviour of CdS/PMMA nanocomposites
Journal of Experimental Nanoscience, 2011 The storage modulus and glass transition temperature (T g) of CdS/PMMA nanocomposites have been evaluated as a function of concentration of CdS nanoparticles. CdS particles have been synthesised via chemical route using cadmium acetate, thiourea and dimethylformamide.
Sonalika Agrawal, N S Saxena
exaly +2 more sources
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Rubber Chemistry and Technology, 2012
ABSTRACT The storage modulus and loss modulus of blends of polypropylene/polystyrene and polyethylene/polystyrene have been mapped quantitatively with contact resonance atomic force microscopy. Contact resonance spectra were collected in Dual AC Resonance Tracking (DART) mode, in which the phase and amplitude are monitored at two discrete ...
Dalia G. Yablon +3 more
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ABSTRACT The storage modulus and loss modulus of blends of polypropylene/polystyrene and polyethylene/polystyrene have been mapped quantitatively with contact resonance atomic force microscopy. Contact resonance spectra were collected in Dual AC Resonance Tracking (DART) mode, in which the phase and amplitude are monitored at two discrete ...
Dalia G. Yablon +3 more
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Peculiar frequency dependence of the storage modulus in a plastic disperse system
Food Research International, 2004Abstract The frequency dependence of the storage modulus in a plastic fat was determined from stress sweeps at different frequencies, using a fresh sample at each frequency, rather than from the standard frequency sweeps at a fixed stress or strain.
Alejandro G Marangoni
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Magnetic-Field Sensitivity of Storage Modulus for Bimodal Magnetic Elastomers
The Journal of Physical Chemistry B, 2016The magnetic-field dependence of the storage modulus for bimodal magnetic elastomers consisting of carbonyl iron with a diameter of 2.8 μm (magnetic) and aluminum hydroxide with a diameter of 1.4 μm (nonmagnetic) was measured, and the effect of nonmagnetic particles on the magnetic-field sensitivity of the storage modulus was investigated.
Jinta Nanpo +4 more
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Effect of electric field on storage modulus of dielectric composites
Journal of Applied Polymer Science, 2020AbstractDCs composed by dielectric particles and elastomer matrix present electric field dependent deformation. Viscoelasticity dominates their electric field response, which has to be considered in their applications. Although the influence of strain amplitude and oscillation frequency on the viscoelasticity of DCs has been investigated, the effect of
Ning Ma +4 more
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Mullins' effect and the strain amplitude dependence of the storage modulus
International Journal of Solids and Structures, 1992A micromechanically based continuum damage model for carbon black filled elastomers exhibiting Mullins' effect is extended to incorporate viscous response within the framework of a theory of viscoelasticity which includes the classical BKZ model as a particular case and is not restricted to isotropy.
Govindjee, Sanjay, Simo, Juan C.
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Journal of Applied Polymer Science, 1986
AbstractThe effects of temperature, molecular weight and its distribution, side chain branching, and the structure of polymers on the elastic behavior of bulk homopolymers were investigated, by using logarithmic plots of first normal stress difference (N1) against shear stress (σ12) and logarithmic plots of storage modulus (G′) against loss modulus (G″)
Chang Dae Han, Myung S. Jhon
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AbstractThe effects of temperature, molecular weight and its distribution, side chain branching, and the structure of polymers on the elastic behavior of bulk homopolymers were investigated, by using logarithmic plots of first normal stress difference (N1) against shear stress (σ12) and logarithmic plots of storage modulus (G′) against loss modulus (G″)
Chang Dae Han, Myung S. Jhon
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Anisotropy in Storage Modulus of Magnetic Gels Induced by Magnetization
Japanese Journal of Applied Physics, 2004The effects of magnetization direction on the complex modulus of magnetic gels, which consist of magnetized barium ferrite and poly vinyl alcohol, have been investigated. The modulus after magnetization showed anisotropy depending on the geometry of magnetization and strain direction.
Tetsu Mitsumata +3 more
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Artefacts of the storage modulus due to bubbles in polymeric fluids
Rheologica Acta, 2013The occurrence of bubbles in samples to be characterised by rotational rheometry may lead to artefacts which can easily be misinterpreted. Exemplarily, a silicone resin is discussed which shows the formation of small bubbles near the interphase between the sample and the rheometer plate if the samples are not carefully dried before being installed in ...
Friedrich Wolff, Helmut Münstedt
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