on mechanical properties of dental resin composites experimental and computational investigation

... explanation describing the formation of a constrained region in the vicinity of the clay layers In their concept, the 14 Chapter Development of polymer-nanoclay composites contribution of a constrained ... the effect of silicate layers on the α-transition and β-transition of the nanocomposites The α-transition is related to the Brownian motion of 19 Chapter Development of polymer-nanoclay composites ... barrier properties and flame retardant properties Since the pioneering work on nylon-6-clay nanocomposites by the Toyota group, many investigations on preparation and characterization have been followed...

Ngày tải lên: 16/09/2015, 08:31

... determining the relationship between the deviation of cyclic stress caused liquefaction with the duration of action (Seed and Lee, 1965); studying the variation of sand liquefaction and factors affecting ... Research on the effect of dynamic loads to changing the physical properties of the soil (Nguyen Huy Phuong and Tran Thuong Binh - 2006); 2) Evaluation of sand liquefaction of Thai Binh formation based ... adverse conditions based on reliable experimental coefficients of each soil Dissertation layout The contents of the thesis consists of chapters and illustrated with 56 tables, 99 figures and graphs,...

Ngày tải lên: 25/05/2016, 15:17

... 25 𝑐𝑚) and (𝑕 = 𝑚𝑚)) and different volume fraction of resin, powder and short fiber, as shown in Tables and Table Comparison of experimental mechanical properties results with theoretical mechanical ... And, Tables and shows the natural frequency of plate samples studied with experimental investigation with various volume fraction of resin and reinforcement and different boundary conditions (SSSS, ... boundary conditions plate with different aspect ratio of composite plate When, the dimensions of composite plate as in eqs to and the mechanical properties and volume fraction of resin and reinforcements...

Ngày tải lên: 09/09/2015, 10:06

... UNITED STATES OF AMERICA MECHANICAL PROPERTIES OF POLYMERS AND COMPOSITES SECOND EDITION,REVISED AND EXPANDED LAWRENCE E.NIELSEN Monsanto Company St Louis Missouri F LANDEL Jet Propulsion Laboratory ... Library of Congress Cataloging-In-Publitation Date Nielsen Lawrence E Mechanical properties of polymers and composites / Lawrence E Nielsen Robert F Landel — 2nd ed., rev and expanded p cm — (Mechanical ... plasticization E- Block and graft polymers and polyh.lcn4»: Problems References Introduction Models Distribution of Relaxation and Retardation Superposition Principles Nonlinear Response A Strain...

Ngày tải lên: 22/03/2014, 12:20

... UNITED STATES OF AMERICA MECHANICAL PROPERTIES OF POLYMERS AND COMPOSITES SECOND EDITION,REVISED AND EXPANDED LAWRENCE E.NIELSEN Monsanto Company St Louis Missouri F LANDEL Jet Propulsion Laboratory ... Library of Congress Cataloging-In-Publitation Date Nielsen Lawrence E Mechanical properties of polymers and composites / Lawrence E Nielsen Robert F Landel — 2nd ed., rev and expanded p cm — (Mechanical ... plasticization E- Block and graft polymers and polyh.lcn4»: Problems References Introduction Models Distribution of Relaxation and Retardation Superposition Principles Nonlinear Response A Strain...

Ngày tải lên: 22/03/2014, 13:20

... Handbook of Polycarbonate Science and Technology, edited by Donald G LeGrand and John T Bendler Handbook of Polyethylene: Structures, Properties, and Applications, Andrew J Peacock Polymer and ... trademarks, and are used only for identification and explanation without intent to infringe Library of Congress Cataloging-in-Publication Data Mechanical properties of polymers based on nanostructure and ... Second Edition, Revised and Expanded, Rakesh K Gupta Handbook of Polyolefins: Second Edition, Revised and Expanded, edited by Cornelia Vasile Polymer Modification: Principles, Techniques, and...

Ngày tải lên: 04/06/2014, 14:26

... UNITED STATES OF AMERICA MECHANICAL PROPERTIES OF POLYMERS AND COMPOSITES SECOND EDITION,REVISED AND EXPANDED LAWRENCE E.NIELSEN Monsanto Company St Louis Missouri F LANDEL Jet Propulsion Laboratory ... Library of Congress Cataloging-In-Publitation Date Nielsen Lawrence E Mechanical properties of polymers and composites / Lawrence E Nielsen Robert F Landel — 2nd ed., rev and expanded p cm — (Mechanical ... plasticization E- Block and graft polymers and polyh.lcn4»: Problems References Introduction Models Distribution of Relaxation and Retardation Superposition Principles Nonlinear Response A Strain...

Ngày tải lên: 26/06/2014, 23:20

... UNITED STATES OF AMERICA MECHANICAL PROPERTIES OF POLYMERS AND COMPOSITES SECOND EDITION,REVISED AND EXPANDED LAWRENCE E.NIELSEN Monsanto Company St Louis Missouri F LANDEL Jet Propulsion Laboratory ... Library of Congress Cataloging-In-Publitation Date Nielsen Lawrence E Mechanical properties of polymers and composites / Lawrence E Nielsen Robert F Landel — 2nd ed., rev and expanded p cm — (Mechanical ... plasticization E- Block and graft polymers and polyh.lcn4»: Problems References Introduction Models Distribution of Relaxation and Retardation Superposition Principles Nonlinear Response A Strain...

Ngày tải lên: 27/06/2014, 17:20

... effect of preparation conditions of acrylic denture base materials on the level of residual monomer, mechanical properties and water absorption J Dent., 23, 313–318 Jagger, R.G (1978) Effect of the ... comparison of 11 soft lining materials as a function of accelerated aging J Prosthetic Dentistry, 69, 114–119 Sanders, J.L, Levin, B & Reitz, P.V (1991) Comparison of the adaptation of acrylic resins ... addition, Dogan et al.9 evaluated the tensile properties of denture base material related to the effect of level of residual monomer, and concluded that the percentage of higher levels of residual...

Ngày tải lên: 07/08/2014, 14:20

... CTBN content (phr) Figure 1: The effect of CTBN content on the glass transition temperatures (Tg) of the EP Properties of Modified Epoxy Resin 3.3 Tensile Properties Table shows the effect of CTBN ... Figure 3: The effect of CTBN content and different testing speeds on the KIC of the EPs Properties of Modified Epoxy Resin In order to correlate the mechanical properties of the modified EP with ... of CTBN-modified EP 3.4 Flexural Properties Figure shows the effect of CTBN content on the flexural strength and modulus of modified EPs A similar trend was found in the case of the tensile properties; ...

Ngày tải lên: 07/08/2014, 14:20

... effect of filler content on the hardness of PS foam produced with and without a TEDA catalyst CONCLUSION The effect of TEDA as a catalyst and waste paper filler content on the mechanical properties ... presence of the catalyst on the resulting compressive strength, and Tables 2, and present the chemical composition of the organic and inorganic components of the waste paper The addition of fillers, ... crosslinking of the isocyanates with the hydroxyl groups at ambient conditions.8–9 In this paper, the effects of TEDA on the properties of waste paper foam composites are reported EXPERIMENTAL...

Ngày tải lên: 07/08/2014, 14:20

... effect of organoclay loading on tensile strength of NR and nanocomposites ENR Figures and show the effect of organoclay loading on stress at 100% elongation (M100) and stress at 300% elongation (M300) ... The effect of organoclay loading on maximum torque of NR and ENR nanocomposites Comparing the NR nanocomposites and ENR nanocomposites, the minimum torque and maximum torque of ENR nanocomposites ... degradation using the TGA curves in Figures 11 and 12 For ENR and NR gum vulcanisation, two steps of thermal degradation occured at 300°C–400°C The second degradation corresponded to the degradation of...

Ngày tải lên: 07/08/2014, 14:20

... the experimental conditions, the drastic change of mechanical properties can be brought about by the glassy transition of one of the polymeric constituent of wood: lignin [4, 9] Nevertheless, one ... and amplitude of the softening behaviour are affected by them These observations lead to the focus on one mechanical test to study the softening behaviour and one criterion Compression test and ... Each cross represents one value of the three repetitions Figure Illustration of the model of evolution of one criterion respect to temperature seems that the softening phenomenon is not completed...

Ngày tải lên: 08/08/2014, 01:21

... UNITED STATES OF AMERICA MECHANICAL PROPERTIES OF POLYMERS AND COMPOSITES SECOND EDITION,REVISED AND EXPANDED LAWRENCE E.NIELSEN Monsanto Company St Louis Missouri F LANDEL Jet Propulsion Laboratory ... Library of Congress Cataloging-In-Publitation Date Nielsen Lawrence E Mechanical properties of polymers and composites / Lawrence E Nielsen Robert F Landel — 2nd ed., rev and expanded p cm — (Mechanical ... plasticization E- Block and graft polymers and polyh.lcn4»: Problems References Introduction Models Distribution of Relaxation and Retardation Superposition Principles Nonlinear Response A Strain...

Ngày tải lên: 12/08/2014, 03:20

... general type of dynamic mechanical instruments are free vibration, resonance forced vibration, nonresonance forced vibration, and wave or pulse propagation instruments (3.4) Although any one instrument ... modulus, and it will be denoted by the symbol J for shear compliance and D for tensile compliance (8) Mechanical Tests and Polymer Transitions TENSION SHEAR CO,PRESSION TORSION Figure Types of creep ... different types of apparatus arc capable of covering the range from a small fraction of a cycle per second up to millions of cycles per second Most instruments measure either shear or tensile properties, ...

Ngày tải lên: 12/08/2014, 03:20

... M a , R the gas Mechanical Tests and Polymer Transitions • §8 Figure Fringe-micelle model of crystalline polymers (Pram Ref 131, ) constant, and AHu the heat of fusion per mole of crystalline ... points of many common polymers More complete tables of melting points and heats of fusions may be found in Refs 4, 38, 140, and 141 Chemical structure factors affect the melting point and glass ... various definitions of strain as defined in Table as a function of AL/Lit from ALIL I} = to ALIL tl = Polystyrene has a shear modulus of 1.25 x 10'" dyn/cm2 and a Poisson's ratio of 0.35 at 25°C...

Ngày tải lên: 12/08/2014, 03:20

... region between the two glass transitions depends on the ratio of the components and on which phase tends to be the continuous phase and which is the dispersed phase, and on the morphology of the ... transitions instead of the usual one Each transition is characteristic of one of the homopolymers The resulting modulus-temperature curve has two steep drops, as shown in Figure The value of the ... (89) and poly(methyl methacrylate) with highly chlorinated (>50%) polyethylene (90) The mechanical properties of compatible blends resemble those of random copolymers, having a single T^ value and...

Ngày tải lên: 12/08/2014, 03:20

... When the stresses and strains become large and the stress-strain curve becomes nonlinear, simple descriptions of the response and interconversions between creep and relaxation become increasingly ... field if only knowledge of the response in simple tension or simple shear is available, and (2) what the long-time response will be In the following section the discussion will rely on understanding ... to relax and allows the spring to contract Most of the relaxation takes place within one decade of time on both sides of the relaxation time, but this is shown clearly only in Figure On the logarithmic...

Ngày tải lên: 12/08/2014, 03:20

... than the longest segmental relaxation time by contributions from the dangling chain ends and entanglement slippage Thus at a given temperature, the location of the transition zone of on the time ... only the longest relaxation time is applicable, so equation (16) becomes where is Avogadro's number, an effective bond length along the backbone chain the monomer molecular weight, and the monomeric ... volume fraction of polymer undiluted polymer, and Creep and Stress Relaxation 101 Mixing a high-viscosity liquid with one of low viscosity reduces the viscosity just because of the dilution of the...

Ngày tải lên: 12/08/2014, 03:20

... amount of Creep and Stress Relaxation 115 Crystallinity—about.i to 15% (213,232) The creep of plasticized poly(vinyl chloride) polymers as a function of temperature, concentration, and kind of plasticizer ... function of time by combining the results of tension and torsion creep tests Poisson's ratio of rigid unoriented polymers remains nearly constant or slowly increases with time Orientation can ... XIII EFFECT OF ORIENTATION Orientation effects are strongly coupled to nonlinear behavior, discussed in Section V, and the stress-strain response discussed in Chapter 5, Orientation makes an...

Ngày tải lên: 12/08/2014, 03:20