Fracture Toughness of Polyamide 6/ Maleated Styrene-Ethylene-Butylene-Styrene/Silicon Carbide Nanocomposites

2011 ◽  
Vol 275 ◽  
pp. 229-233 ◽  
Author(s):  
Cheng Zhu Liao ◽  
Sie Chin Tjong
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Impact Strength ◽  
Tensile Ductility ◽  
Polyamide 6 ◽  
Essential Work ◽  
Melt Blending ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

Polyamide 6 (PA6) based nanocomposites toughened with 20 wt% maleated styrene-ethylene-butylene-stryrene (mSEBS) reinforced with 1-7 wt% silicon carbide nanoparticles (SiCp) were fabricated via melt blending followed by injection molding. Tensile results showed that SiCp additions improve the Young’s modulus and tensile strength of PA6/mSEBS blends but decrease their tensile ductility and impact strength. EWF test revealed that the SiCp additions reduce both the specific essential work of fracture and specific non-essential plastic work of fracture. Thus SiCp additions are detrimental to the fracture toughness of PA6/mSEBS blend.

Mechanical Behavior and Toughness of Electrospun Polycaprolactone Nanofibers

2007 ◽  
Author(s):  
Avinash Baji ◽  
Shing-Chung Wong ◽  
Todd Blackledge ◽  
Darrell Reneker ◽  
Sureeporn Tripatanasuwan
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Electrospun Nanofibers ◽  
Electrospun Fibers ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Strain Behavior ◽  
Strength And Stiffness ◽  
Work Of Fracture

This study examines the toughness and mechanical properties of biodegradable poly(ε-caprolactone) (PCL) with varying hydroxyapatite (HAP) content (0 – 30 wt%). Fracture toughness of HAP-filled PCL was also examined for the electrospun fibers using the essential work of fracture (EWF) concept. The electrospun fibers exhibited a diameter ranging from 200–500 nm and a combination of HAP particle sizes ranging from (50–100 nm) under the SEM. The tensile stress-strain behavior and fracture toughness of electrospun nanofibers were assessed using a nanoforce tensile tester. The electrospun system showed a substantial increase in plane-stress essential work of fracture in comparison to bulk specimens processed from pellets. Toughness decreased as HAP loading increased. The effect of simulated body fluid (SBF) on the mechanical properties was also studied. Mechanical properties including tensile strength and modulus were found to increase with HAP concentration in general. Compression molded electrospun nanofibers were spatially confined such that the tensile strength and stiffness of molded and spun fibers are remarkably higher than those from molded specimen of pellets.

Essential work of fracture study on thermoplastic polyolefin filled with silicon carbide nanoparticles

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Cheng Zhu Liao ◽  
Sie Chin Tjong
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Melt Processing ◽  
Fracture Mechanisms ◽  
Strength Increase ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Silicon Carbide Nanoparticles ◽  
Thermoplastic Polyolefin ◽  
Work Of Fracture

AbstractThermoplastic polyolefin (TPO) containing 70 wt% polypropylene and 30 wt% styrene-ethylene-butadiene-styrene grafted maleic anhydride and its nanocomposites filled with 1-5wt% silicon carbide nanoparticles (SiCp) were prepared by melt processing followed by injection molding. Tensile tests show that both Young’s modulus and tensile strength increase with increasing SiCp loading. Essential work of fracture (EWF) method was used to evaluate the fracture toughness of resulting nanocomposites. EWF test demonstrates that the fracture toughness of TPO blend generally decreases with increasing SiCp content. Shield yielding and fibrillation are the main fracture mechanisms for TPO blend and composites. SiCp are found to improve the heat deflection temperature of the TPO blend.

Effect of strain rate on the fracture toughness of some ductile polymers using the essential work of fracture (EWF) approach

2000 ◽  
Vol 40 (12) ◽  
pp. 2558-2568 ◽  
Author(s):  
Emma C. Y. Ching ◽  
Wendy K. Y. Poon ◽  
Robert K. Y. Li ◽  
Yiu-Wing Mai
Keyword(s):  
Fracture Toughness ◽  
Strain Rate ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

Fracture Toughness Characterization of High-Density Polyethylene Using Essential Work of Fracture Concept

2020 ◽  
Vol 20 (1) ◽  
pp. 315-322
Author(s):  
Tarek Houari ◽  
Mohamed Benguediab ◽  
Azzeddine Belaziz ◽  
Mohamed Belhamiani ◽  
Abdelkrim Aid
Keyword(s):  
Fracture Toughness ◽  
High Density Polyethylene ◽  
High Density ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

Evaluation of the fracture behaviors of fluoropolymer binders with the essential work of fracture (EWF)

RSC Advances ◽  
2015 ◽  
Vol 5 (122) ◽  
pp. 100408-100417 ◽  
Author(s):  
Guansong He ◽  
Jiahui Liu ◽  
Congmei Lin ◽  
Shijun Liu
Keyword(s):  
Fracture Toughness ◽  
Polymer Binder ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Final Fracture ◽  
Fracture Behaviors ◽  
And Behaviors ◽  
Work Of Fracture

The beforehand evaluation of the fracture toughness and behaviors of the polymer binder through EWF can give a reliable feedback to the final fracture toughness of PBX.

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