Fiber tortuosity and its effects on shock transfer characteristics of Ultra High Molecular Weight Polyethylene (UHMWPE) fibers embedded in a polyurethane composite structure

2020 ◽  
Vol 192 ◽  
pp. 108112
Author(s):  
Ahmed A.W. Anwer ◽  
Tony Dong ◽  
Hani E. Naguib
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Composite Structure ◽  
Transfer Characteristics ◽  
Polyurethane Composite ◽  
Uhmwpe Fibers ◽  
Ultra High Molecular Weight

Ultra-high molecular weight polyethylene fiber-reinforced thermoplastic corn starch composite

2016 ◽  
Vol 30 (4) ◽  
pp. 564-577 ◽  
Author(s):  
Bin Guo ◽  
Li-Jian Wang ◽  
Peng Yin ◽  
Ben-Gang Li ◽  
Pan-Xin Li
Keyword(s):  
Molecular Weight ◽  
Contact Angle ◽  
High Molecular Weight ◽  
Corn Starch ◽  
Thermoplastic Starch ◽  
Polyethylene Fiber ◽  
Twin Screw ◽  
Uhmwpe Fibers ◽  
Fibrous Morphology ◽  
Ultra High Molecular Weight

The ultra-high molecular weight polyethylene (UHMWPE) fibers, as the fibrous morphology of polyethylene (PE), were first used to reinforce thermoplastic starch (TPS) by a twin screw extruder. The influence of the UHMWPE content on the mechanical and dynamic mechanical thermal properties, thermal stability, contact angle, torque rheological properties, and fractured surface morphology of the UHMWPE/TPS composites was studied in detail. We found that the UHMWPE fibers were well dispersed in the TPS matrix, and the mechanical properties and water resistance of the composites improved significantly. Especially, the incorporation of UHMWPE fibers at a content of 2 wt% generated a composite with better performance (tensile strength of 8.78 MPa and contact angle of 80.2°).

scholarly journals Embedding Ultra-High-Molecular-Weight Polyethylene Fibers in 3D-Printed Polylactic Acid (PLA) Parts

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1825 ◽  
Author(s):  
Amza ◽  
Zapciu ◽  
Eyþórsdóttir ◽  
Björnsdóttir ◽  
Borg
Keyword(s):  
Molecular Weight ◽  
Tensile Strength ◽  
3D Printing ◽  
High Molecular Weight ◽  
Polylactic Acid ◽  
Strength Tests ◽  
Raster Angle ◽  
Uhmwpe Fibers ◽  
3D Printed ◽  
Ultra High Molecular Weight

This study aims to assess whether ultra-high-molecular-weight polyethylene (UHMWPE) fibers can be successfully embedded in a polylactic acid (PLA) matrix in a material extrusion 3D printing (ME3DP) process, despite the apparent thermal incompatibility between the two materials. The work started with assessing the maximum PLA extrusion temperatures at which UHMWPE fibers withstand the 3D printing process without melting or severe degradation. After testing various fiber orientations and extrusion temperatures, it has been found that the maximum extrusion temperature depends on fiber orientation relative to extrusion pathing and varies between 175 °C and 185 °C at an ambient temperature of 25 °C. Multiple specimens with embedded strands of UHMWPE fibers have been 3D printed and following tensile strength tests on the fabricated specimens, it has been found that adding even a small number of fiber strands laid in the same direction as the load increased tensile strength by 12% to 23% depending on the raster angle, even when taking into account the decrease in tensile strength due to reduced performance of the PLA substrate caused by lower extrusion temperatures.

Mechanical Properties of Carbon Nanotubes Reinforced Ultra High Molecular Weight Polyethylene

2008 ◽  
Vol 136 ◽  
pp. 45-50 ◽  
Author(s):  
Christian N. Della ◽  
Dong Wei Shu
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
High Impact ◽  
Engineering Properties ◽  
Impact Forces ◽  
Uhmwpe Fibers ◽  
Ultra High Molecular Weight ◽  
Very High

Carbon nanotubes (CNT) have been shown to enhance the engineering properties of plastic fibers in ballistic-resistant garments enabling the garments to withstand very high impact forces while remaining to be lightweight. Previous study shows that by reinforcing ultra high molecular weight polyethylene (UHMWPE) fibers with a small amount of carbon nanotubes, the fibers are simultaneously toughened and strengthened. In this paper, we study the mechanical properties of carbon nanotube reinforced ultra high molecular weight polyethylene (UHMWPE) by using micromechanics-based Mori-Tanaka model. Results show that the addition of small amount of carbon nanotubes as reinforcement can substantially improve the mechanical properties of the UHMWPE fibers.

Effect of Carbon Coating on the Properties of Gamma Irradiated Ultra-High-Molecular-Weight Polyethylene Specimens

2000 ◽  
Vol 28 (3-4) ◽  
pp. 445-449 ◽  
Author(s):  
Debi P. Mukherjee ◽  
Alan L. Ogden ◽  
R. H. Mayeux ◽  
U. Siriwardane ◽  
H. R. Patel
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Carbon Coating ◽  
Gamma Irradiated ◽  
Ultra High Molecular Weight
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