A novel UHMWPE composite with low friction coefficient for long-term ice sliding  

作　　者：Yacong HOU Lei CHEN Zheng ZHANG Jinlin CHANG Ding WENG Yuan MA Jiadao WANG 

机构地区：[1]State Key Laboratory of Tribology in Advanced Equipment,School of Mechanical Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Friction》2024年第11期2480-2490,共11页摩擦（英文版）

基　　金：funded by the National Key R&D Program of China(Nos.2020YFF0304600 and 2019YFF0302100);the National Natural Science Foundation of China(No.52275200).

摘　　要：Low friction ice sliding interfaces were critical for ski performance optimization.Traditional fluorinated ski waxes have attracted considerable attention for enhancing the hydrophobicity,anti-wearing,and oxidation resistance of ski–ice base.However,the toxicity and complexity of the waxing process limited batch manufacturing of low-cost and non-toxic ski–ice base,what is more,the wax covering on the base wore and failed during skiing due to the friction between ski and ice.Herein,we demonstrated a novel ultra-high molecular weight polyethylene(UHMWPE)composite that could maintain a low coefficient of friction(COF)with about 0.026 for at least 160 min when skiing on the ice.Microcapsule(MS)could release liquid(liquid paraffin(LP)).The released LP further enhanced the hydrophobicity of UHMWPE’s surfaces when friction occurred,which would maintain the stability and durability of the water film,and achieved superior and long-lasting friction resistance.Compared with other microcapsules with lower hydrophobic core,microcapsules with LP performed the best in reducing the friction of ski base from 0.126 to 0.024.Meanwhile,the COF of the surface kept at about 0.02 even after 12 rapid temperature changes.The presented UHMWPE composite of encapsulated liquids showed great potential and broad application owing to its simplicity and efficiency in winter sports.

关 键 词：microcapsule(MS) ice friction SKI liquid paraffin SELF-LUBRICATION water film 

分 类 号：TH117[机械工程—机械设计及理论]