聚乙烯和再生轮胎橡胶共混物失效过程的声发射分析

IF 5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Polymer Testing Pub Date : 2025-04-11 DOI:10.1016/j.polymertesting.2025.108813

Ákos Görbe , Gergő Zsolt Marton , Tamás Bárány

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引用次数: 0

摘要

在这项研究中，我们开发了一种使用声发射（AE）的测试方法来研究填充磨碎轮胎橡胶（GTR）的低密度聚乙烯（LDPE）共混物的破坏过程和相容性程度。共混物中含有40%的GTR，与基体材料不相容，显著改变了其断裂行为。根据发射信号的振幅，我们可以定义拉伸曲线的三个阶段。此外，我们还证明了乙烯-乙烯-乙酸酯相容化的效果：相容化促进了基质和填料之间更强的界面，从而产生更高振幅的信号。我们分析了主要的信号特性，并发现了一个表明所有这些特性都具有兼容性的偏移。我们还通过撕裂试验研究了试样的裂纹扩展，发现在LDPE-GTR共混物中加入EVA有助于更稳定的裂纹扩展，正如较少的声学事件所表明的那样。

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Acoustic emission analysis of failure processes in polyethylene and recycled tire rubber blends

In this study, we developed a test method using acoustic emission (AE) to investigate the failure process and degree of compatibility of low-density polyethylene (LDPE) blends filled with ground tire rubber (GTR). The blends contained 40 wt% of GTR, which is incompatible with the matrix material and altered their fracture behavior significantly. We could define three stages of the tensile curves based on the amplitude of the emitted signals. Furthermore, we demonstrated the effect of compatibilization using ethylene-vinyl-acetate: compatibilization facilitated a stronger interface between the matrix and filler, resulting in signals with higher amplitude. We analyzed the main signal properties and found a shift indicating compatibilization in all of them. We also studied the crack propagation of the specimens using tear tests and found that the incorporation of EVA in LDPE-GTR blends facilitated a more stable crack propagation, as indicated by fewer acoustic events.

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来源期刊

Polymer Testing 工程技术-材料科学：表征与测试

CiteScore

10.70

自引率

5.90%

发文量

328

审稿时长

44 days

期刊介绍： Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.