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首页> 外文期刊>Fibres & textiles in Eastern Europe >Corrosion Behaviour of CuSn- and CuZnNi-coated Polypropylene Nonwoven
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Corrosion Behaviour of CuSn- and CuZnNi-coated Polypropylene Nonwoven

机译：CuSn和CuZnNi涂层聚丙烯非织造布的腐蚀行为

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摘要

The intended purpose of metallised nonwovens is architectural shielding against electromagnetic fields. Therefore the aim of this work was to systematically investigate the corrosion behaviour of metallic layer/polypropylene nonwoven systems in the contact with an aggressive environment (3% NaCl solution). In the work, a thermo-bonded polypropylene nonwoven was used as a substrate for CuSn and CuNiZn thin layer deposition. Nonwoven metallisation was carried out using the magnetron sputtering process. Additionally to enhance the durability of these barrier materials, their surfaces were covered with a thin, hydrophobic coating of polydimetylsiloksane. Evaluation of the corrosion resistance was made by means of potentiodynamic polarisation tests. Furthermore the degree of loss of the metallic layers was checked using a optical metallographic microscope and quantitative microanalysis by the method of Energy Dispersive X-ray Spectroscopy. It was found that the CuZnNi metallic layer deposited onto the polypropylene nonwoven shows higher corrosion resistance as compared to CuSn. In both cases, the metallic layers are the most susceptible to degradation within the nonwoven "waves". Regardless of the layers' chemical composition, the polydimetylsiloksane coating increases their corrosion resistance in 3% NaCl solution.
机译：金属化非织造布的预期目的是针对电磁场的建筑屏蔽。因此，这项工作的目的是系统地研究与腐蚀性环境（3％NaCl溶液）接触时金属层/聚丙烯非织造体系的腐蚀行为。在这项工作中，将热粘合聚丙烯无纺布用作CuSn和CuNiZn薄层沉积的基材。非织造金属化使用磁控溅射工艺进行。为了提高这些阻隔材料的耐用性，它们的表面还覆盖有一层薄的疏水性聚二甲硅烷基硅氧烷涂层。通过电位动力学极化试验进行耐腐蚀性的评估。此外，使用光学金相显微镜检查金属层的损失程度，并通过能量色散X射线光谱法进行定量微量分析。已经发现，与CuSn相比，沉积在聚丙烯无纺布上的CuZnNi金属层显示出更高的耐腐蚀性。在两种情况下，金属层在非织造“波”中最容易降解。不论层的化学组成如何，聚二甲硅烷基硅氧烷涂层均可提高其在3％NaCl溶液中的耐腐蚀性。

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