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热辅助等离子体处理过程中空气污染对聚四氟乙烯（PTFE）粘附性能的影响。

Influence of air contamination during heat-assisted plasma treatment on adhesion properties of polytetrafluoroethylene (PTFE).

作者信息

Ohkubo Yuji, Nakagawa Tetsuya, Endo Katsuyoshi, Yamamura Kazuya

机构信息

Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita Osaka 565-0871 Japan

出版信息

RSC Adv. 2019 Jul 24;9(40):22900-22906. doi: 10.1039/c9ra01789e. eCollection 2019 Jul 23.

DOI:10.1039/c9ra01789e
PMID:35514469
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9067102/
Abstract

Plasma surface treatment is typically not effective on fluoropolymers containing polytetrafluoroethylene (PTFE). It is reported that heat-assisted plasma (HAP) treatment at high temperatures (above 200 °C) under atmospheric pressure helium (He) plasma improves the adhesion properties of PTFE. In this study, we investigated the influence of the air concentration during HAP treatment on the adhesion properties of PTFE. Air concentration was controlled ambient air inflow amount, in other words, base pressure. The PTFE samples HAP-treated in different air concentrations were thermally compressed with an unvulcanized isobutylene-isoprene rubber (IIR). Then, the PTFE/IIR adhesion strength was measured T-peel test. We show that, when PTFE was HAP-treated in 0.01% air, its PTFE/IIR adhesion strength was over 2 N mm; the IIR underwent cohesion failure. However, the PTFE/IIR adhesion strength drastically decreased in the presence of air contamination. The relationships between air concentration during HAP treatment, adhesion properties of PTFE, surface chemical composition, surface morphology, and surface hardness were investigated and discussed.

摘要

等离子体表面处理通常对含聚四氟乙烯（PTFE）的氟聚合物无效。据报道，在常压氦（He）等离子体下于高温（高于200°C）进行热辅助等离子体（HAP）处理可改善PTFE的粘附性能。在本研究中，我们研究了HAP处理过程中空气浓度对PTFE粘附性能的影响。空气浓度通过环境空气流入量来控制，换句话说，就是基础压力。在不同空气浓度下进行HAP处理的PTFE样品与未硫化的异丁烯 - 异戊二烯橡胶（IIR）进行热压。然后，通过T型剥离试验测量PTFE/IIR的粘附强度。我们发现，当PTFE在0.01%的空气中进行HAP处理时，其PTFE/IIR粘附强度超过2 N/mm；IIR发生内聚破坏。然而，在存在空气污染的情况下，PTFE/IIR的粘附强度急剧下降。研究并讨论了HAP处理过程中的空气浓度、PTFE的粘附性能、表面化学成分、表面形态和表面硬度之间的关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/20f16e8a99c0/c9ra01789e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/ee2fe33fb5ee/c9ra01789e-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/3745244aea4d/c9ra01789e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/88309d2feea3/c9ra01789e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/b64dc3533e14/c9ra01789e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/8ede3e82c0f5/c9ra01789e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/20f16e8a99c0/c9ra01789e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/ee2fe33fb5ee/c9ra01789e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/e6e8bfe23dfb/c9ra01789e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/3745244aea4d/c9ra01789e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/88309d2feea3/c9ra01789e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/b64dc3533e14/c9ra01789e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/8ede3e82c0f5/c9ra01789e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1938/9067102/20f16e8a99c0/c9ra01789e-f7.jpg

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