Volume 142, Issue 13 e56669
RESEARCH ARTICLE

Revealing the Relationship Between the Entanglement Densities and Tribological Performance of UHMWPE

Peng Wei

Peng Wei

State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, China

Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), ​Investigation (lead), Methodology (lead), Writing - original draft (lead)

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Yang Sui

Yang Sui

SINOPEC Beijing Research Institute of Chemical Industry co Ltd, Beijing, China

Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing, China

Contribution: Data curation (equal), Formal analysis (equal), Methodology (equal), Writing - original draft (equal)

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Kunhang Yan

Kunhang Yan

Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing, China

Contribution: Data curation (equal), Formal analysis (equal), Methodology (equal)

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Junhao Han

Junhao Han

AVIC Xinxiang Aviation Industry (Group) co. Ltd., Xinxiang, China

Contribution: Data curation (equal), Formal analysis (equal), Methodology (equal)

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Yi Cui

Yi Cui

Kingfa Sci.& Tech. Co. Ltd., Guangdong, China

Contribution: Data curation (equal), ​Investigation (equal), Methodology (equal)

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Chuanbo Cong

Chuanbo Cong

Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing, China

Contribution: Formal analysis (lead), Methodology (lead)

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Qiong Zhou

Qiong Zhou

Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing, China

Contribution: Data curation (equal), Formal analysis (equal), Funding acquisition (lead), Methodology (equal)

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Pengpeng Bai

Pengpeng Bai

State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, China

Contribution: Conceptualization (equal), Formal analysis (equal), Methodology (equal)

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Yu Tian

Corresponding Author

Yu Tian

State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, China

Correspondence:

Yu Tian ([email protected])

Contribution: Funding acquisition (lead), Methodology (equal), Supervision (equal)

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First published: 27 December 2024

Funding: This work was supported by Key Technologies Research and Development Program, 2022YFC2803702. Key Research and Development Program of Zhejiang Province, 2021YFB3400601.

Peng Wei and Yang Sui authors contributed equally to this work.

ABSTRACT

Ultra-high molecular weight polyethylene (UHMWPE) can be used as the candidate material for mixed transmission pipelines due to its fabulous wear durability, corrosion resistance, and self-lubricating qualities. Nonetheless, the connection between its microstructures and tribological performance is still unclear, and hence it is difficult to elucidate the mechanism of its wear resistance. Four types of UHMWPE samples (GUR 400Fine, GUR 4012, GUR 4130, and GUR 4150) were chosen for this study, and their tribological properties were tested. The results show that the coefficient of friction (COF) and wear rate (WR) of GUR 4130 decrease as the temperature increases, but its crystallinity would not be changed while its entanglement density increases and they were confirmed by dynamic mechanical analysis. Additionally, GUR 400Fine and GUR 4012 have similar molecular weight, GUR 400Fine's COF and WR are 1.12 and 1.37 times higher than those of GUR 4012 due to its lower entanglement density. Additionally, higher molecular weight causes higher entanglement density and better tribological performance. In conclusion, we have prepared UHMWPE with better wear resistance through a simple processing method.

Conflicts of Interest

All the authors declare no interest.

Data Availability Statement

Data will be made available on request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.