Tribological properties of organotin compound modified UHMWPE

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tian Yang ◽  
Haiping Xu ◽  
Yongliang Jin ◽  
Ke Huang ◽  
Jiesong Tu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Plastic Deformation ◽  
Tribological Properties ◽  
Adhesive Wear ◽  
Surface Hardness ◽  
Organotin Compound ◽  
Changing Trend ◽  
Uhmwpe Composites ◽  
Ultra High Molecular Weight ◽  
Properties Of Composites

Abstract A range of ultra-high molecular weight polyethylene (UHMWPE)/tetraphenyltin (Ph4Sn) nanocomposites were fabricated by hot-pressing. The surface hardness and crystallinity of composites were studied. It revealed that the surface hardness of the composites decreased slightly, and the changing trend of crystallinity was consistent with the hardness. The tribological properties of composites under seawater lubricating conditions were investigated. The experimental results showed that the friction coefficients of the composites almost keep the same but the wear reduced sharply. With the increases of Ph4Sn content, the wear of composites first decreases significantly and then increases, meanwhile the friction coefficient remains basically unchanged. The dominant wear mechanism has changed from adhesive wear to plastic deformation and finally to abrasive wear. The addition of Ph4Sn particles reduces the sensitivity of the Ph4Sn/UHMWPE composites to water and transfers the load to the UHMWPE network, resulting in the wear resistance improved.

Tribological properties of PAANa/UHMWPE composite materials in seawater lubrication

2019 ◽  
Vol 39 (10) ◽  
pp. 874-882 ◽  
Author(s):  
Tian Yang ◽  
Yongliang Jin ◽  
Haitao Duan ◽  
Jiesong Tu ◽  
Dan Jia ◽  
...  
Keyword(s):  
Tribological Properties ◽  
High Performance ◽  
Friction And Wear ◽  
Surface Hardness ◽  
Hot Press ◽  
Uhmwpe Composites ◽  
Resistant Composite Material ◽  
Ultra High Molecular Weight ◽  
Press Molding ◽  
Uhmwpe Composite

Abstract To prepare a high-performance anti-friction and wear-resistant composite material for friction sub-components in marine equipment, a modification was made by adding different amounts sodium polyacrylate (PAANa) to ultra-high molecular weight polyethylene (UHMWPE). PAANa/UHMWPE-blended powders were prepared at individual weight ratios of 0/100, 3/97, 5/95, 8/92, 13/87, and 18/82 with hot-press molding. In seawater, experiments of PAANa/UHMWPE composites sliding against GCr15 have been conducted with a ball-on-disk configuration in this study. The results show the surface hardness of composites was almost the same with the increase in PAANa proportion, however, the friction coefficient and wear scars of PAANa/UHMWPE composites/GCr15 sliding pairs firstly decrease and then increase. Scanning electron microscopy (SEM) results show that wear mechanism of the composites is mainly plastic deformation and spalling. The composites with PAANa content of 3% and 5% achieves better tribological properties than the pure UHMWPE material.

Effect of N2 Ion Bombardment on Optical and Mechanical Properties of Ultra-High Molecular Weight Polyethylene (UHMWPE)

2013 ◽  
Vol 341 ◽  
pp. 169-180 ◽  
Author(s):  
A.M. Abdul-Kader ◽  
Y.A. El-Gendy ◽  
Awad A. Al-Rashdi ◽  
A.M. Salem
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Ion Beam ◽  
Surface Hardness ◽  
Conjugation Length ◽  
High Fluences ◽  
Pristine Sample ◽  
Optical And Mechanical Properties ◽  
Ultra High Molecular Weight

The effect of ion beam bombardment on the optical and mechanical properties of ultra-high molecular weight polyethylene (UHMWPE) was investigated. UHMWPE polymer samples were bombarded with 150 keV N2ions under vacuum at room temperature to high fluences ranging from 1x1016to 2x1017ions cm-2. The untreated as well as treated samples were investigated by ultraviolet-visible (UV-Vis) spectrophotometer and Vickers micro-hardness techniques. The direct and indirect optical band gap decreased from 2.9 and 1.65 eV for pristine sample to 1.7 and 1 eV for those bombarded with N2ion beam at the highest fluence, respectively. With increasing ion fluence, an increase in the number of carbon atoms per conjugation length, N and number of carbon atoms per cluster, M in a formed cluster were observed. A significant improvement in surface hardness was obtained by increasing the ion fluence.

Biotribological Behavior of Ultra High Molecular Weight Polyethylene Composites Containing Nature Coral

2005 ◽  
Author(s):  
Qingling Wang ◽  
Shirong Ge ◽  
Xiaolong Huang ◽  
Sahnhua Qian
Keyword(s):  
Molecular Weight ◽  
Elastic Modulus ◽  
Friction And Wear ◽  
Wear Test ◽  
Si3n4 Ceramic ◽  
Joint Replacements ◽  
Formation Method ◽  
Uhmwpe Composites ◽  
Ultra High Molecular Weight ◽  
Ball On Disc

It’s important to research on the biotribology of UHMWPE composites for developing the new joint implanted materials and the life of the joint replacements. In this research, UHMWPE-NC composites were prepared using the pressing formation method. The nano-hardness and elastic modulus evaluations of all of UHMWPE-NC composites were obtained by nanoindentation tests (Hysitron, Co.,) with the corresponding load-displacement curves confirming the characteristic properties of these materials. A ball-on disc wear test was run on the Universal Micro-Tribometer (UMT) to investigate the friction and wear behaviors of Si3N4 ceramic cross-sliding against UHMWPE-NC composites in artificial body fluids lubrication.

B402 Analysis of Elastic-Plastic Deformation of Ultra-High Molecular Weight Polyethylene

2008 ◽  
Vol 2008.19 (0) ◽  
pp. 133-134
Author(s):  
Mitsugu TODO ◽  
Yuji TAKAHASHI ◽  
Taichi FURUKAWA ◽  
Takafumi ISODA ◽  
Shohei NAKAMURA ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Plastic Deformation ◽  
High Molecular Weight ◽  
Elastic Plastic ◽  
Ultra High Molecular Weight
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