Results 191 to 200 of about 8,591 (213)
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Molecular dynamics of elastomers investigated by DMTA and the NMR-MOUSE ®
Colloid & Polymer Science, 2002A series of elastomers, consisting of different polymers and crosslink densities, is investigated by dynamic-mechanical thermal analysis (DMTA) and NMR relaxation in an inhomogeneous field by the NMR-MOUSE®. A broad range of molecular mobilities and therefore variation in the glass transition temperature is covered by use of polymers with different ...
Herrmann, Volker +3 more
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Investigation on PA/PP mixture properties by means of DMTA method
Journal of Materials Processing Technology, 2006Abstract Polymer mixing is presently one of the most effective and the most intensely developing methods of physical properties modification for polymers. Mixing polymers one can modify certain properties, mainly physical. In this work, investigation results for mixtures of polyamide 6 with polypropylene have been presented.
A. Gnatowski, J. Koszkul
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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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Characterization of XLPE cable insulation by dynamic mechanical thermal analyzer (DMTA)
Conference Record of the 1996 IEEE International Symposium on Electrical Insulation, 2002Polymeric insulated cables and accessories are becoming widely used at voltages over 120 kV, even up to 500 kV. Although high electrical stress presents the greatest challenge, some attention should be given to the fact that the polymeric insulation is also subjected to mechanical stress which can affect the electrical performance of the high-voltage ...
J.-L. Parpal, C. Guddemi, L. Lamarre
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Compatibility studies of polypropylene (PP)-sago starch (SS) blends using DMTA
Journal of Polymer Research, 2000Sago starch (SS) was melt-blended with polypropylene (PP) with the concentration of SS in the blends varied between 10% and 50% by weight. Characterization of the PP/SS blends was carried out to gain some information on the miscibility between PP and SS and to gain insight into how well these materials behave thermodynamically with regard to the ...
Hamdan, S. +3 more
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Dynamic mechanical thermal analysis (DMTA) of cellulose nanofibril/nanoclay/pMDI nanocomposites
Composites Part B: Engineering, 2016Abstract Cellulose nanofibrils and montmorillonite nanoclay were used to reinforce polymethylene diphenyl diisocyanate (pMDI) resin at loading levels ranging from 1 to 5%. Laminate sandwich samples were prepared using nano-reinforced resin and wood strands.
Zeki Candan +2 more
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Dynamic Mechanical Thermal Analysis (DMTA) of Polylactic Acid (PLA)/Cellulose Composite
2022The use of polylactic acid (PLA), a biodegradable, biocompatible, and recyclable polymer, as a replacement for petroleum-based polymers, has received considerable attention in recent years amid growing environmental concerns. The main drawbacks of PLA properties are low toughness and thermal-mechanical stability.
Kumar, Sandeep +2 more
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A Low Modulus Adhesive Characterization by Means of DMTA Testing
The Journal of Adhesion, 2012The main objective of this paper is to investigate a way to characterize experimentally the mechanical behavior of low modulus adhesives. In this context, the relaxation and complex moluli master curves of a SIKAFLEX® 505 adhesive are obtained by means of dynamic mechanical thermal analysis. Firstly, the procedure carried out to prepare and to validate
Jon García-Barruetabeña +2 more
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Precision Machining of Silicon Carbide with Diamond Micro Tool Array (DMTA)
Key Engineering Materials, 2007An advanced conditioning technique was developed to precisely and effectively condition the nickel electroplated mono-layer coarse-grained diamond grinding wheel of 46m and 91m grain size with an aim to fabricate Diamond Micro Tool Arrays (DMTA), to meet the high demands of form accuracy, surface quality and low subsurface damage in ductile machining ...
Qing Liang Zhao +3 more
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Identifying transition temperatures in bloodmeal-based thermoplastics using material pocket DMTA
Journal of Thermal Analysis and Calorimetry, 2012Bloodmeal can be used to manufacture thermoplastics, but requires water, urea, sodium sulphite, and sodium dodecyl sulphate to modify chain mobility. Transition temperatures of bloodmeal, modified bloodmeal, and processed bloodmeal-based thermoplastics were compared using material pocket dynamic mechanical thermal analysis.
J. M. Bier, C. J. R. Verbeek, M. C. Lay
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