Study on the tribological properties of UHMWPE modified by UV-induced grafting under seawater lubrication

UHMWPE-g-AA samples are prepared by ultraviolet-light-induced surface grafting. Ball-on-disk tribology experiments were used to study the tribological properties of the UHMWPE-g-AA samples in seawater. The results show that the PAA lubricating brush layer and its adsorption of free ions in seawater...

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Published in:Tribology international 2022-04, Vol.168, p.107419, Article 107419
Main Authors: Cai, Tun, Zhan, Shengpeng, Yang, Tian, Li, Yinhua, Jia, Dan, Tu, Jiesong, Li, Jian, Duan, Haitao
Format: Article
Language:English
Subjects:
Coefficient of friction
Deformation effects
Friction
Friction and wear
Friction reduction
Grafting
Lubrication
Mechanical properties
Molecular chains
Seawater
Shearing
Surface modification
Tribology
UHMWPE
Ultra high molecular weight polyethylene
UV grafting
Wear
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cited_by cdi_FETCH-LOGICAL-c340t-328f4ebd1108cfb6ef608897e1304f0b2ea3aca3d8d355a4845965ebb8476e5a3
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container_issue
container_start_page 107419
container_title Tribology international
container_volume 168
creator Cai, Tun
Zhan, Shengpeng
Yang, Tian
Li, Yinhua
Jia, Dan
Tu, Jiesong
Li, Jian
Duan, Haitao
description UHMWPE-g-AA samples are prepared by ultraviolet-light-induced surface grafting. Ball-on-disk tribology experiments were used to study the tribological properties of the UHMWPE-g-AA samples in seawater. The results show that the PAA lubricating brush layer and its adsorption of free ions in seawater increase the thickness of the colloidal lubricating film, which significantly improves the fluid medium at the friction surface/interface. The lubricating layer produced by the hydrophilic PAA on the surface improves the plasticizing effect of the friction surface and the deformation ability of the molecular chain when it is subjected to shearing. During friction and wear, both the friction coefficient and amount of wear of the friction pair are reduced.
doi_str_mv 10.1016/j.triboint.2021.107419
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subjects Coefficient of friction
Deformation effects
Friction
Friction and wear
Friction reduction
Grafting
Lubrication
Mechanical properties
Molecular chains
Seawater
Shearing
Surface modification
Tribology
UHMWPE
Ultra high molecular weight polyethylene
UV grafting
Wear
title Study on the tribological properties of UHMWPE modified by UV-induced grafting under seawater lubrication
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