scholarly journals Yarn on yarn abrasion performance of high modulus polyethylene fiber improved by graphene/polyurethane composites coating

2021 ◽  
Vol 16 ◽  
pp. 155892502098356
Author(s):  
Fanggang Ning ◽  
Guifang He ◽  
Chunfu Sheng ◽  
Hongwei He ◽  
Jian Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
High Frequency ◽  
High Performance ◽  
High Modulus ◽  
Bending Fatigue ◽  
Temperature Observation ◽  
Polyethylene Fiber ◽  
High Performance Fiber ◽  
Polyurethane Composites ◽  
Modulus Polyethylene

As a high-performance fiber, high modulus polyethylene fiber (HMPE) has been widely used in the rope industry. However, due to its low melting point and poor thermal conductivity, it tends to break under the conditions of repeated yarn on yarn abrasion during tension-tension fatigue or tension-bending fatigue. This paper puts forward a method to improve the yarn on yarn abrasion performance of HMPE using a functional graphene/polyurethane composites coating (FG/PU) and discussed the influence of yarn tension, abrasion frequency on the yarn on yarn performance. Based on the yarn morphology and abrasion temperature observation, the failure mechanism was discussed. The experimental results show that the FG/PU coating obtained can improve the yarn on yarn abrasion performance obviously, especially in the case of high-frequency and large tension condition.

scholarly journals Thermal properties of polypropylene and high modulus polyethylene fibers reinforced concretes

2020 ◽  
Vol 13 (1) ◽  
pp. 32-38
Author(s):  
J. C. AMARAL JR ◽  
W. G. MORAVIA
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Compressive Strength ◽  
Thermal Expansion ◽  
Thermal Properties ◽  
Construction Industry ◽  
Polymer Fibers ◽  
High Modulus ◽  
Modulus Polyethylene ◽  
Polyethylene Fibers

Abstract Concrete is one of the materials most used by the construction industry. Reinforcing this material with fibers is a technique used to improve its mechanical properties. Steel and polymer fibers are the main types used in this application and there are few studies about the influence of polymer fibers on the thermal properties of concrete. In order to analyze this influence, the present work carried out thermal conductivity, thermal expansion, and compressive strength after exposure to a temperature of 200 °C on specimens made of concrete with addition of polypropylene (PP) fibers and concrete with addition of high modulus polyethylene (HMPE). It was also conducted thermogravimetric analysis (TGA) on PP and HMPE fibers. The results show that the addition of polymer fibers alters the thermal properties of the concrete, reducing its thermal expansion, for example.

Theoretical Analysis of Thermal Conductivity in Amorphous Inter-layer Dielectrics

2006 ◽  
Vol 914 ◽  
Author(s):  
Manu Shamsa ◽  
Patrick Morrow ◽  
Shriram Ramanathan
Keyword(s):  
Experimental Data ◽  
Thermal Conductivity ◽  
Thermal Transport ◽  
High Frequency ◽  
Thermal Conduction ◽  
High Performance ◽  
Amorphous Materials ◽  
Disordered Materials ◽  
Semiconductor Processing ◽  
Hopping Model

AbstractUnderstanding thermal conduction in interlayer dielectrics (ILDs) is important for the optimal design of interconnect layers in backend semiconductor processing for future high-performance nano-scale devices. Reduced thermal conductivity of porous ILDs for example can adversely affect the temperature rise in the embedded metal lines leading to un-desirable reliability issues and design constraints. In this paper, we report results of our theoretical and experimental investigation of thermal transport in amorphous and porous dielectrics. A phonon-hopping model has been adapted to calculate the thermal conductivity in disordered materials. The value of hopping integral has been calculated by comparing the modeling results with experimental data for various amorphous and porous materials. The model shows reasonable agreement with experimental data for various amorphous materials including SiO2 and other glasses over a wide temperature range from 50K – 300K. The model suggests that the hopping of localized high frequency phonons is a dominant thermal transport mechanism in such material systems.

Surface morphology and nanostructure of high modulus polyethylene fiber

1994 ◽  
Vol 32 (2) ◽  
pp. 235-240 ◽  
Author(s):  
A. Wawkuschewski ◽  
H. J. Cantow ◽  
S. N. Magonov
Keyword(s):  
Surface Morphology ◽  
High Modulus ◽  
Polyethylene Fiber ◽  
Modulus Polyethylene

scholarly journals Bend Over Sheave Durability of Fibre Ropes for Deep Sea Handling Operations

2013 ◽  
Author(s):  
P. Davies ◽  
N. Lacotte ◽  
G. Kibsgaard ◽  
R. Craig ◽  
D. Cannell ◽  
...  
Keyword(s):  
Experimental Data ◽  
Deep Sea ◽  
Dynamic Friction ◽  
Special Device ◽  
High Modulus ◽  
Test Program ◽  
Polyethylene Fiber ◽  
Friction Measurements ◽  
Modulus Polyethylene ◽  
Cycles To Failure

This paper describes work performed within a Joint Industry Project aiming to evaluate the lifetime of deep sea handling ropes. Various HMPE (High Modulus Polyethylene) fiber ropes, with and without coatings, have been studied under both tensile and cyclic bend over sheave (CBOS) loading. A large test program has enabled both tension-cycle to failure relationships and empirical expressions for residual strength after cycling to be determined. A special device was then developed to apply a known couple to the sheave, allowing both dynamic friction measurements to be made and the influence of applied couple on cycles to failure to be measured. These experimental data were used in the development of a numerical model which can be used to study the influence of rope and sheave parameters.

scholarly journals Review Production Technology of Ultra High Modulus Polyethylene

2020 ◽  
Vol 130 (5) ◽  
pp. 3-10
Author(s):  
L. A. Khakhin ◽  
◽  
A. V. Kulik ◽  
I. A. Arutyunov ◽  
S. N. Potapova ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Molecular Weight ◽  
High Performance ◽  
Chemical Resistance ◽  
High Fracture Toughness ◽  
High Modulus ◽  
Low Friction ◽  
High Fracture ◽  
Modulus Polyethylene ◽  
Ultra High Molecular Weight

The review of existing technologies of production and processing of ultra-high molecular weight polyethylene, as well as areas of its application, is presented. Ultra high modulus polyethylene has high performance characteristics – wear resistance, low friction coefficient, high corrosion and chemical resistance and high fracture toughness. These unique properties of ultra high modulus polyethylene distinguish it from other varieties of polyethylene.

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