Results 141 to 150 of about 1,946 (184)
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Blends of polymers with similar glass transition temperatures: A DMTA and DSC study
Journal of Applied Polymer Science, 2004AbstractThe miscibility of different polymer blends was studied with dynamic mechanical thermal analysis (DMTA) in conjunction with differential scanning calorimetry (DSC). The blends were prepared by melt mixing polymers having similar glass transitions such as polyglutarimide (PGI), styrene‐co‐maleic anhydride random copolymers (SMA), and polystyrene
Dimitrios Bikiaris
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DMTA study of the urethane network in rubber waste-urethane composites
Journal of Thermal Analysis and Calorimetry, 2005The supermolecular structures of rubber waste-urethane composites based on results of mechanical spectroscopy are discussed. The results give a broader understanding of the relation between the processing history and the morphology in the resultant engineering products.
H -J Radusch
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DMTA Analysis of Propellants Based on Inert and Energetic Binder Systems
Key Engineering Materials, 2002L.M. Pedroso +3 more
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An investigation into DMTA clamping problems
Measurement Science and Technology, 1992The authors present the results of an investigation into clamping problems associated with the flexural testing of specimens which are clamped at both ends for dynamic mechanical thermal analysis (DMTA). Two major factors which must be considered when modelling the specimen's behaviour have been identified.
T Leonard, G Gooberman
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DSC and DMTA characterization of ternary blends
Polymer, 2002Abstract The phase behavior of ternary blends made of poly(epichlorohydrin) (PECH), poly(vinyl acetate) (PVAc) and poly(methyl methacrylate) (PMMA) has been investigated by differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA).
Dominique Pinoit, Robert E Prud'homme
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DMTA study of a nickel-titanium wire
Journal of Thermal Analysis and Calorimetry, 2002The nickel-titanium alloys are usually known as Shape Memory alloys because of their ability to return to some previously defined shape or size when subjected to the appropriate thermal procedure. Mechanical properties of a nickel titanium wire were investigated by DMTA using cylindrical tension mode.
R. Artiaga +6 more
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A DMTA study of the fuel resistance of elastomers
Thermochimica Acta, 1993Abstract One of the major factors that determines the useful lifetime of a polymeric material is the chemical resistance of the polymer to its environment. Knowledge of the chemical resistance of gasket materials to their environment is critical as their failure leads to downtime for the system and increased maintenance costs, as well as fire and ...
John A. Hiltz +2 more
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A contribution to the interpretation of polymer viscoelasticity in DMTA testing
Polymer Bulletin, 2009Some ideas relevant to the prevailing viscoelasticity interpretations of dynamic mechanical thermal analysis (DMTA) experiments are presented. The main aspect is the inclusion of kinetic energy and inertia as variables, seeing the relaxing mass constantly increasing during strain, assigning inertial variation and not viscosity to energy dissipation ...
Cleuza Maria Wasilkoski +2 more
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Simulating the formation of bread crust in a DMTA rheometer
Journal of Cereal Science, 2010Water evaporates very fast from the surface layers of dough, enhanced by high heating rates at the beginning of baking. The rheological properties of the surface layers play an important role during the baking process, especially in local and overall expansion and water loss.
Vanin, F.M. +3 more
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A dynamic mechanical thermal analysis (DMTA) study of polyethylenes
Thermochimica Acta, 1991Abstract Differences in mechanical α and β relaxations for a family of six polyethylenes (PE) are discussed in terms of structural variations and immobilization of amorphous chains. An amorphous contribution has been identified in the α transition of high density polyethylenes (HDPE). Further, low density polyethylenes (LDPE) with long chain branches
Hongjian Sha +2 more
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