Influence of the recyclate content of silicone elastomers on the mechanical properties of high consistency silicone rubber

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

Polymer Testing Pub Date : 2025-07-03 DOI:10.1016/j.polymertesting.2025.108916

Timo Hofmann, Kevin Klier, Ralf- Urs Giesen, Hans- Peter Heim

引用次数: 0

Abstract

In this publication, the effects of finely ground silicone elastomer recyclate powder (>50 μm) as a filler in a solid silicone rubber were investigated. The results indicated that when peroxide-curing high consistency silicone rubber is used, the recycled material has no influence on the crosslinking. In the rheological tests, however, it was observed that the viscosity increases with increasing filler content. The present study analyzed the tensile test and compression set to reveal an influence on the elastic properties of the material. The compression set increases by approx. 22 % compared to the reference value up to 60 phr recyclate content. In terms of tensile strength, the recyclate leads to a decrease in maximum stress of up to 45 % and elongation of up to 25 %. In contrast to the elastic properties, however, no significant change in hardness can be seen as a result of using the recycled powder.

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有机硅弹性体回收量对高浓硅橡胶力学性能的影响

在这篇文章中，研究了细磨有机硅弹性体再生粉末（>50 μm）作为固体硅橡胶填料的效果。结果表明，当使用过氧化物硫化高浓硅橡胶时，再生材料对交联性能没有影响。然而，在流变试验中，观察到粘度随着填料含量的增加而增加。本研究分析了拉伸试验和压缩试验对材料弹性性能的影响。压缩集增加约。与参考值22%相比，PHR可回收含量高达60。在抗拉强度方面，回收导致最大应力降低高达45%，延伸率高达25%。然而，与弹性性能相反，硬度没有明显变化，可以看到使用再生粉末的结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.