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Showing 1 to 7 of 7 for “"aramids"”.
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The solid state structure and properties of stiff chain aramids
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1990.
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Low velocity impact response of laminated textile coir-aramids/epoxy hybrid composites subjected to transverse penetration loading
The hybrid of natural and synthetic fibres in a composite system has gained interest in research field due to the environmental consciousness. Coir natural fibre has been found to have a high potential as impact resistance, in which brittle fibre helps to spread the impact energy over a wider area. …
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FAILURE MECHANISMS OF ULTRA HIGH MOLAR MASS POLYETHYLENE SINGLE FIBERS AT EXTREME TEMPERATURES AND STRAIN-RATES
… to other fiber materials, such as poly-aramids (~450 °C). The mechanical properties of UHMMPE single fibers were investigated through a series of 437 tensile tests at 66 temperature-strain-rate combinations. Changes in stress-strain curve shapes were observed with respect to temperature …
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Performance Evaluation of RC Flexural Elements Strengthened by Advanced Composites
… (a) to investigate the relative merits of using Aramids in comparison to other FRPs, (b) strength optimisation of systems to prevent excessive losses of ductility, (c) to examine the failure mode and crack patterns, together with salient strength factors at ultimate limit state and (d) to carry …
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Limiting factors of the tensile strength of aramid fibers
… theoretical modulus of 220 GPa for monopolymer aramids. This limit value of the unloading modulus also signifies the tightest crystalline domain orientation distribution of 6.6º with respect to the fiber axis. However, this orientation distribution is not retained upon unloading. On the other …
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Polímeros sensores: mejora de sus prestaciones mediante métodos físicos y químicos
Esta memoria de tesis doctoral presenta el estudio, síntesis y caracterización de materiales poliméricos, así como la mejora de sus propiedades mediante el empleo de métodos físicos y químicos. Los polímeros son materiales muy versátiles con innumerables aplicaciones en sociedad actual que van …
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Non-covalent Intermolecular Interactions in Polymer Design: Segmented Copolymers to Non-viral Gene Delivery Vectors
… of various chemical structures from crystalline aramids to amorphous alkyl amides with each structure possessing unique intermolecular interactions. Variations to either of the copolymer segments alters the copolymers physical properties allowing for tuning of a copolymers properties for a …