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膨胀热塑性聚氨酯降解行为及机理的综合研究

A Comprehensive Study on the Degradation Behavior and Mechanism of Expanded Thermoplastic Polyurethane.

作者信息

Zhao Wei, Luo Shiying, Zhuo Qing, Liang Yuguang, Li Yuanyuan, Dong Hangyu, Qin Liu, Li Yingru

机构信息

Key Laboratory of Green Manufacturing of Super-Light Elastomer Materials of State Ethnic Affairs Commission, Hubei Minzu University, Enshi 445000, China.

College of Intelligent Systems Science and Engineering, Hubei Minzu University, Enshi 445000, China.

出版信息

Polymers (Basel). 2025 Apr 11;17(8):1033. doi: 10.3390/polym17081033.

DOI:10.3390/polym17081033
PMID:40284298
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12030128/
Abstract

Expanded thermoplastic polyurethane (ETPU) is used in a wide range of applications due to its excellent properties, but inevitably, aging deteriorates the material properties and shortens service lifetime. This study conducted aging experiments on ETPU to summarize the deterioration trend and provide reliable data. The ETPU underwent three distinct aging protocols: thermal aging for 28 days in a controlled 80 °C environment; xenon lamp aging under continuous UV irradiation (via xenon lamp) at 80 °C for 28 days; and weathering aging through 671 days of outdoor exposure to real-world weather conditions. After various structural characterization and performance tests on the aged ETPUs, the results showed that thermal aging is not the key factor causing the aging of ETPU; the internal structure of ETPU is damaged and the performance rapidly deteriorates under the combined effect of light, heat, and humidity. The special heterogeneous structure gives the sample different internal aging characteristics, and the bead interface becomes a defective site after aging, affecting the overall mechanical properties of the material. In the natural state, the lifetime of ETPU is about two years. Our work will provide valuable data for the study of the aging properties of ETPU and contribute to the prediction of the lifetime of the material.

摘要

发泡热塑性聚氨酯（ETPU）因其优异的性能而被广泛应用，但不可避免的是，老化会使材料性能下降并缩短使用寿命。本研究对ETPU进行了老化实验，以总结其性能劣化趋势并提供可靠数据。ETPU经历了三种不同的老化方案：在80°C的可控环境中进行28天的热老化；在80°C下通过氙灯连续紫外线照射进行28天的氙灯老化；以及通过在真实户外天气条件下暴露671天进行自然老化。对老化后的ETPU进行各种结构表征和性能测试后，结果表明热老化不是导致ETPU老化的关键因素；在光、热和湿度的综合作用下，ETPU的内部结构受损，性能迅速下降。特殊的非均相结构使样品具有不同的内部老化特性，老化后珠粒界面成为缺陷部位，影响材料的整体力学性能。在自然状态下，ETPU的使用寿命约为两年。我们的工作将为ETPU老化性能的研究提供有价值的数据，并有助于预测材料的使用寿命。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/e818f19189e6/polymers-17-01033-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/be80709a8476/polymers-17-01033-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/ef81eaaf70cb/polymers-17-01033-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/85b1c53ff287/polymers-17-01033-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/d7329cc98dea/polymers-17-01033-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/d7360723faf5/polymers-17-01033-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/03df398713c6/polymers-17-01033-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/10c56bb24e4b/polymers-17-01033-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/b0e6082f3f6e/polymers-17-01033-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/e818f19189e6/polymers-17-01033-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/be80709a8476/polymers-17-01033-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/ef81eaaf70cb/polymers-17-01033-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/85b1c53ff287/polymers-17-01033-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/d7329cc98dea/polymers-17-01033-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/d7360723faf5/polymers-17-01033-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/03df398713c6/polymers-17-01033-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/10c56bb24e4b/polymers-17-01033-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/b0e6082f3f6e/polymers-17-01033-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/81c9/12030128/e818f19189e6/polymers-17-01033-g009.jpg

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本文引用的文献

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Effects of UV light on physicochemical changes in thermoplastic polyurethanes: Mechanism and disinfection byproduct formation.紫外线对热塑性聚氨酯物理化学变化的影响：机制和消毒副产物形成。
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Photochemical weathering of polyurethane microplastics produced complex and dynamic mixtures of dissolved organic chemicals.聚氨酯微塑料的光化学风化产生了复杂且动态的溶解有机化学物质混合物。
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热老化对用于铁路被动阻尼（垫板）的聚（酯聚氨酯）弹性体的物理化学和光学性能的影响。
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