Results 311 to 320 of about 229,083 (333)
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Macromolecular Symposia, 2001
It is tried to examine briefly all the aspects of filler interactions with polymer ageing, including direct chemical (catalysis of degradation, stabilising effects) and physical (screen and thermooptical effects, modification of transport properties) interactions as well as indirect ones such as stabiliser trapping, influence on the rate of mechanical ...
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It is tried to examine briefly all the aspects of filler interactions with polymer ageing, including direct chemical (catalysis of degradation, stabilising effects) and physical (screen and thermooptical effects, modification of transport properties) interactions as well as indirect ones such as stabiliser trapping, influence on the rate of mechanical ...
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Physica A: Statistical Mechanics and its Applications, 1989
Abstract We review the electrical properties of polymers filled with conducting particles of various sizes and shapes. dc and ac experimental behaviors in the neighborhood of the familiar insulator to conductor transition are generally in fair agreement with the predictions of percolation theory.
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Abstract We review the electrical properties of polymers filled with conducting particles of various sizes and shapes. dc and ac experimental behaviors in the neighborhood of the familiar insulator to conductor transition are generally in fair agreement with the predictions of percolation theory.
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Fatigue behaviour of filled polymers
Macromolecular Symposia, 1996AbstractThe fatigue resistance of any material is the combined resistance to crack initiation and then to crack propagation.1) In most of the cases, fillers act as strong cracks initiators. The Fatigue Crack Propagation can, under certain conditions, be improved (glass beads in epoxy) and this can be attributed to the crack front pinning mechanism ...
Abbas Tcharkhtchi, J. P. Trotignon
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Heat conductivity of filled polymers
AIP Conference Proceedings, 2014The model of the filled polymer is considered. This model takes into account the following factors: the aggregation of particles of the filler; the interfacial layer. The numerical method of calculating the effective heat conductivity of composite systems is offered. The method consists in the direct solution of the heat conductivity equation.
A. Nikitin, A. Bachurina
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Misconceptions about filled polymers
Journal of Applied Polymer Science, 1974The idea that, with filled polymers, length fraction, area fraction, and volume fraction of filler are different appears to have gained wide acceptance. The fallacy of this, except for special directions in ordered arrangements, is demonstrated. This misunderstanding has led to widespread misinterpretation of experimental results in this field.
J. Leidner, M. R. Piggott
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Jamming in Filled Polymer Systems
Macromolecular Symposia, 2010AbstractAfter an introduction into the general characteristics of the jamming behavior, two filler flocculation experiments on a polycarbonate melt filled with multi‐walled carbon nanotubes and on a silica‐filled ethylene propylene diene monomer elastomer are presented. We propose that these experiments can be regarded as jamming phenomena.
Marina Saphiannikova +3 more
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New approach to filled polymers [PDF]
Journal of Thermal Analysis and Calorimetry, 1998 Mechanopolymerization of pentabromobenzyl (mono)acrylate (PBB-MA) on the surface of inorganic fillers Mg(OH)2 and CaCO3 was studied. The role of activated surface of fillers was investigated using DSC and FTIR. The influence of milling time and of the filler chemical content on polymerization starting temperature and polymerization enthalpy was studied
Arthur Bobovitch, Emmanuel M. Gutman
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1990
Published data, concerning the results of measuring rheological properties of polymer melts with rigid fillers, are discussed. The review is based mainly on the works of the 1980s. The effect of a filler's presence on three fundamental parameters of a material, namely yield stress, viscosity, and rubbery elasticity is considered.
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Published data, concerning the results of measuring rheological properties of polymer melts with rigid fillers, are discussed. The review is based mainly on the works of the 1980s. The effect of a filler's presence on three fundamental parameters of a material, namely yield stress, viscosity, and rubbery elasticity is considered.
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Conformation of macromolecules in filled polymers
Polymer Science U.S.S.R., 1986Abstract A split plane densely packed with macromolecules is considered to be an appropriate model for interlayers in filled polymers. The structure of amorphous chains among the filler particles is assumed to be the same as the conformation of isolated Gaussian chains in critical conditions corresponding to the beginning of adsorption of chains from
A.M. Skovortsov, A.A. Gorbunov
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Fracture of particulate filled polymers
British Polymer Journal, 1978AbstractThe addition of particulate mineral fillers to polymers confers certain mechanical property improvements automatically. Stiffness increases, creep diminishes and distortion at elevated temperatures is often reduced. However, the fracture energy of a polymer, as measured in impact, cracking or tearing tests, may vary quite unpredictably when ...
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