The effect of rubber functionality on the phase morphology, mechanical performance and toughening mechanisms of highly toughened PP/PA6/EPDM ternary blends

2019 ◽  
Vol 79 ◽  
pp. 106018 ◽  
Author(s):  
Maryam Hasanpour ◽  
M. Mehrabi Mazidi ◽  
Mir Karim Razavi Aghjeh
Keyword(s):  
Mechanical Performance ◽  
Phase Morphology ◽  
Ternary Blends ◽  
Toughening Mechanisms

Phase Morphology and its Role on Tensile Properties in Ternary Blends of PP/PC/SEBS

2012 ◽  
Vol 02 (04) ◽  
pp. 256-259
Author(s):  
Hadis Goodarzi ◽  
Omid Moini Jazani ◽  
Mohammad Reza Saeb
Keyword(s):  
Tensile Properties ◽  
Phase Morphology ◽  
Ternary Blends

Improved mechanical performance and unique toughening mechanisms of UDM processed epoxy‐SiO 2 nanocomposites

2021 ◽  
Author(s):  
Kaushal Kumar ◽  
Manjeet S. Goyat ◽  
Ankur Solanki ◽  
Arun Kumar ◽  
Ravi Kant ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Toughening Mechanisms

scholarly journals Influence of the synergy between mineral additions and Portland cement in the physical-mechanical properties of ternary binders

2016 ◽  
Vol 66 (324) ◽  
pp. 097 ◽  
Author(s):  
Á. Fernández ◽  
M. C. Alonso ◽  
J. L. García-Calvo ◽  
B. Lothenbach
Keyword(s):  
Mechanical Strength ◽  
Blast Furnace Slag ◽  
Mechanical Performance ◽  
Strength Gain ◽  
Alkali Content ◽  
Ternary Blends ◽  
Early Hydration ◽  
Limestone Filler ◽  
Mineral Additions ◽  
Furnace Slag

The paper deals with the synergistic effect of mineral additions on the physical-mechanical performance of ternary blends prepared with different Portland cements (PC). The effect in setting and heat flow release is also analyzed. The mineral additions used are blast furnace slag (BFS), fly ash (FA) and limestone filler (LF). PCs with different C3A and alkali content have been tested to study the synergy in ternary blends. Ternary binders with PC low in C3A and alkali content achieve similar mechanical strength gain as plain PC and refinement of pore size distribution from early hydration ages due to the acceleration of PC hydration induced by the mineral additions. In contrast, ternary binders with PC higher in C3A and alkali content have a delayed in mechanical strength at early hydration ages, but significantly higher at long hydration times.

scholarly journals Toughening mechanisms in bioinspired multilayered materials

2015 ◽  
Vol 12 (102) ◽  
pp. 20140855 ◽  
Author(s):  
Sina Askarinejad ◽  
Nima Rahbar
Keyword(s):  
Mechanical Performance ◽  
Micromechanical Model ◽  
Organic Matrix ◽  
Theoretical Strength ◽  
Nonlinear Behaviour ◽  
Toughening Mechanisms ◽  
Highly Nonlinear ◽  
Multilayered Material ◽  
Multilayered Materials ◽  
Nanoscale Features

Outstanding mechanical properties of biological multilayered materials are strongly influenced by nanoscale features in their structure. In this study, mechanical behaviour and toughening mechanisms of abalone nacre-inspired multilayered materials are explored. In nacre's structure, the organic matrix, pillars and the roughness of the aragonite platelets play important roles in its overall mechanical performance. A micromechanical model for multilayered biological materials is proposed to simulate their mechanical deformation and toughening mechanisms. The fundamental hypothesis of the model is the inclusion of nanoscale pillars with near theoretical strength ( σ th ~ E /30). It is also assumed that pillars and asperities confine the organic matrix to the proximity of the platelets, and, hence, increase their stiffness, since it has been previously shown that the organic matrix behaves more stiffly in the proximity of mineral platelets. The modelling results are in excellent agreement with the available experimental data for abalone nacre. The results demonstrate that the aragonite platelets, pillars and organic matrix synergistically affect the stiffness of nacre, and the pillars significantly contribute to the mechanical performance of nacre. It is also shown that the roughness induced interactions between the organic matrix and aragonite platelet, represented in the model by asperity elements, play a key role in strength and toughness of abalone nacre. The highly nonlinear behaviour of the proposed multilayered material is the result of distributed deformation in the nacre-like structure due to the existence of nano-asperities and nanopillars with near theoretical strength. Finally, tensile toughness is studied as a function of the components in the microstructure of nacre.

scholarly journals Achieving a low electrical percolation threshold and superior mechanical performance in poly(l-lactide)/thermoplastic polyurethane/carbon nanotubes composites via tailoring phase morphology with the aid of stereocomplex crystallites

RSC Advances ◽  
2017 ◽  
Vol 7 (18) ◽  
pp. 11076-11084 ◽  
Author(s):  
Zhenwei Liu ◽  
Hongwei Bai ◽  
Yuanlin Luo ◽  
Qin Zhang ◽  
Qiang Fu
Keyword(s):  
Carbon Nanotubes ◽  
Percolation Threshold ◽  
Mechanical Performance ◽  
Thermoplastic Polyurethane ◽  
Phase Morphology ◽  
Electrical Percolation ◽  
Electrical Percolation Threshold

We demonstrate a facile strategy to fabricate highly conductive PLLA/TPU/CNTs composites with very low percolation threshold and good stiffness–toughness balance via constructing stereocomplex crystallites in PLLA melt to tailor phase morphology.

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