The aging behavior of HDPE pipe bodies and butt-fusion welded joints: effects of thermal oxidative and hydrothermal accelerated aging

IF 2.1 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Mechanics of Time-Dependent Materials Pub Date : 2024-04-25 DOI:10.1007/s11043-024-09693-5

Ying-Chun Chen, Jie Yang, Yan-Feng Li, Rui Miao, Qiang Li, Xiao-li Fan

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Abstract

We investigate the aging behavior of High-Density Polyethylene (HDPE) pipelines, specifically comparing the Pipe Body (PB) and Butt-Fusion Welded Joint (BFWJ) under thermal oxidative and hydrothermal accelerated aging conditions. Our results indicate that the performance disparity between PB and BFWJ diminishes as aging time increases. We also find that the specimen type affects the quantity of polyethylene fibers, with hydrothermal aging significantly affecting the cohesive force among these fibers in both PB and BFWJ. These findings on differential aging processes of PB and BFWJ contribute to a deeper understanding of HDPE pipeline durability and offer practical recommendations for mitigating degradation risks associated with these disparities. This research underscores the importance of considering specific aging behaviors in the maintenance and reliability assessment of HDPE pipeline systems used in energy transport, industrial, and agricultural applications.

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高密度聚乙烯管体和对熔焊接接头的老化行为：热氧化和水热加速老化的影响

我们对高密度聚乙烯（HDPE）管道的老化行为进行了研究，特别是在热氧化和水热加速老化条件下对管体（PB）和对接熔接接头（BFWJ）进行了比较。结果表明，随着老化时间的延长，PB 和 BFWJ 之间的性能差距逐渐缩小。我们还发现，试样类型会影响聚乙烯纤维的数量，水热老化会显著影响 PB 和 BFWJ 中这些纤维之间的内聚力。这些关于 PB 和 BFWJ 不同老化过程的发现有助于加深对高密度聚乙烯管道耐久性的理解，并为降低与这些差异相关的降解风险提供了实用建议。这项研究强调了在能源运输、工业和农业应用中使用的高密度聚乙烯管道系统的维护和可靠性评估中考虑特定老化行为的重要性。

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来源期刊

Mechanics of Time-Dependent Materials 工程技术-材料科学：表征与测试

CiteScore

4.90

自引率

8.00%

发文量

审稿时长

>12 weeks

期刊介绍： Mechanics of Time-Dependent Materials accepts contributions dealing with the time-dependent mechanical properties of solid polymers, metals, ceramics, concrete, wood, or their composites. It is recognized that certain materials can be in the melt state as function of temperature and/or pressure. Contributions concerned with fundamental issues relating to processing and melt-to-solid transition behaviour are welcome, as are contributions addressing time-dependent failure and fracture phenomena. Manuscripts addressing environmental issues will be considered if they relate to time-dependent mechanical properties. The journal promotes the transfer of knowledge between various disciplines that deal with the properties of time-dependent solid materials but approach these from different angles. Among these disciplines are: Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Rheology, Materials Science, Polymer Physics, Design, and others.