Effects of carbon nanotube aspect ratio on strengthening and tribological behavior of ultra high molecular weight polyethylene composite

被引：85

作者：

Kumar, R. Manoj ^{[1
,2
]}

Sharma, Sandan Kumar ^{[2
]}

Kumar, B. V. Manoj ^{[2
]}

Lahiri, Debrupa ^{[1
,2
]}

机构：

[1] Indian Inst Technol Roorkee, Biomat & Multiscale Mech Lab, Roorkee 247667, Uttar Pradesh, India

[2] Indian Inst Technol Roorkee, Dept Met & Mat Engn, Roorkee 247667, Uttar Pradesh, India

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2015年 / 76卷

关键词：

Polymer-matrix composites (PMCs); Wear; Mechanical properties; Thermal analysis; MECHANICAL-PROPERTIES; ELASTIC-MODULUS; TENSILE; PERFORMANCE; RADIATION; MWNT; LOAD;

D O I：

10.1016/j.compositesa.2015.05.007

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Carbon-based nanomaterials are great choice as reinforcement to Ultra-High Molecular-Weight Polyethylene (UHMWPE), with potential use in orthopedics. While high in-plane-stiffness and strength of these nanomaterials help in toughening, their weaker out-of-plane integrity offers lubrication. Present study investigates effect of aspect ratio of carbon nanotubes (CNT) on toughening and solid-lubrication efficiency of UHMWPE-matrix. A nominal 0.05-0.1 wt.% of CNT addition increases hardness and elastic modulus of UHMWPE by 3-45% and 8-42%, respectively. Higher aspect ratio (HAR) CNTs are found more effective in improving hardness and modulus of UHMWPE. Wear rate and friction-coefficient also increase by 530% and 220%, respectively, while reinforced with HAR CNTs. Thermal analysis shows slight increase in crystallinity and stability of composite. HAR CNTs improve interfacial bonding with matrix, due to their morphological similarity to polymer chains, as compared to low aspect ratio CNT. Aspect ratio of CNTs significantly dominates strengthening and tribological behavior of UHMWPE. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：62 / 72

页数：11

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