Results 161 to 170 of about 63,574 (196)
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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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Molecular weight of linear polymer from storage modulus
Journal of Macromolecular Science, Part B, 1992Abstract In a previous work [1], using a binary blending rule, we had developed a numerical method to calculate the polymer molecular weight from the relaxation time spectrum of the terminal zone of stress relaxation modulus G(t). In this work, we separated the terminal zone of storage modulus G'(ω) from plateau modulus Gno and calculated the ...
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High-temperature strength and storage modulus in unidirectional hybrid composites
Composites Science and Technology, 2006Abstract The mechanical properties of pultruded rods of unidirectional hybrid glass/carbon-epoxy composites were evaluated with respect to retention of high-temperature properties up to 250 °C. Two prototype matrices were produced using developmental epoxy formulations with glass transition temperatures (Tg) of 176 and 202 °C, respectively.
E.J. Bosze +4 more
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Weibull distribution application on temperature dependence of polyurethane storage modulus
International Journal of Materials Research, 2016Abstract In this paper, a stiffness–temperature model based on Weibull statistics was applied to quantitatively describe changes in the storage modulus of thermoplastic polyurethane over a wide range of temperature. The variation of the storage modulus with temperature was obtained from dynamic mechanical analysis tests across transition
Ivan Kopal +5 more
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Storage Modulus Analysis of Kenaf Fibre Reinforced Epoxy Composites
Applied Mechanics and Materials, 2013This article presents the storage modulus analysis of kenaf fibre composites that reinforced by two different epoxy matrix systems, named epoxy A and epoxy B. These epoxies are commercially available in Malaysia and been used as a polymer matrix in composite research.
Abdul Hakim Abdullah +3 more
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Journal of Materials Science, 1996
The uniaxial tensile moduli for two filled composite solid propellants, one based on a hydroxy-terminated polybutadiene with an ammonium perchlorate oxidizer and the other on a glycidyl azide polymer with a phase-stabilized ammonium nitrate oxidizer, were measured at various temperatures and over a three decade range of strain rates.
E. J. S. Duncan, P. Brousseau
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The uniaxial tensile moduli for two filled composite solid propellants, one based on a hydroxy-terminated polybutadiene with an ammonium perchlorate oxidizer and the other on a glycidyl azide polymer with a phase-stabilized ammonium nitrate oxidizer, were measured at various temperatures and over a three decade range of strain rates.
E. J. S. Duncan, P. Brousseau
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Langmuir, 2016
Atomic force microscopy (AFM) is used to carry out rheology measurements on the nanoscale and to determine the mechanical properties of poly(l-lysine) (PLL)/hyaluronic acid (HA) multilayer films. Storage (G') and loss modulus (G″) of the films are calculated and compared with the values obtained from quartz crystal microbalance with dissipation ...
Johannes, Hellwig +3 more
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Atomic force microscopy (AFM) is used to carry out rheology measurements on the nanoscale and to determine the mechanical properties of poly(l-lysine) (PLL)/hyaluronic acid (HA) multilayer films. Storage (G') and loss modulus (G″) of the films are calculated and compared with the values obtained from quartz crystal microbalance with dissipation ...
Johannes, Hellwig +3 more
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A New Temperature-Dependent Storage Modulus Model of Epoxy Resin
Temperature-dependent dynamic mechanical properties of epoxy resin were studied by dynamic mechanical analysis. A new temperature-dependent storage modulus model was developed to describe the storage modulus of epoxy resin for multi-transition regions from cryogenics to elevated temperatures.Jiemin Feng, Zhansheng Guo
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Shape memory polyimide composites with high storage modulus and high glass transition temperature
Journal of Intelligent Material Systems and Structures, 2022Fenghua Zhang, Jinsong Leng
exaly
Methodology to predict the time-dependent storage modulus of starch suspensions during heating
Food Hydrocolloids, 2021Vivek Narsimhan, Ganesan Narsimhan
exaly