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石墨烯包覆聚醚醚酮纳米复合材料的摩擦学和电学性能增强

Enhanced Tribological and Electrical Performance of Graphene-Coated Polyetheretherketone Nanocomposites.

作者信息

Lee Pyoung-Chan, Hong Seo-Hwa, Kim Jung-Hoon, Seo Jae-Young, Ko Youn-Ki, Ha Jin-Uk, Jeoung Sun-Kyoung, Kim Myeong-Gi, Cho Beom-Gon

机构信息

Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myeon, Dongnam-gu, Cheonan-si 31214, Chungcheongnam-do, Republic of Korea.

R&D Center, BESTGRAPHENE Co., Ltd., Yeoju-si 12616, Gyeonggi-do, Republic of Korea.

出版信息

Polymers (Basel). 2025 Mar 9;17(6):721. doi: 10.3390/polym17060721.

DOI:10.3390/polym17060721
PMID:40292564
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11944534/
Abstract

Polyetheretherketone (PEEK) is widely used across various industries due to its high thermal stability, chemical resistance, and superior mechanical properties. However, its tribological and electrical properties require enhancement for advanced applications. This study investigates the effect of graphene coating on PEEK microspheres to improve their performance. Functionalized graphene oxide (CMG+) and graphene nanoplatelets (GnPs) were introduced onto the PEEK surface via an electrostatic self-adsorption process, followed by high-speed mixing and hot-pressing to fabricate PEEK-graphene nanocomposites. The structural, thermal, tribological, and electrical properties of the composites were systematically analyzed. The results show that graphene acts as a nucleating agent, enhancing the crystallinity of the nanocomposites. Tribological tests indicate that CMG+ significantly reduces the friction coefficient, with CMG1.0 and CMG2.0 samples showing friction reductions of 54% and 63%, respectively, compared to pure PEEK. Moreover, electrical property evaluations reveal that surface resistance decreases with increasing graphene content, achieving optimal conductivity at 1.0 wt.% CMG+ and further enhancement with the addition of GnPs. These findings demonstrate that the functionalized graphene-coated PEEK microspheres exhibit superior tribological and electrical performance due to nanoscale interactions, making them suitable for electrostatically dissipative and wear-resistant applications.

摘要

聚醚醚酮（PEEK）因其高热稳定性、耐化学性和优异的机械性能而在各个行业中得到广泛应用。然而，其摩擦学和电学性能需要改进以满足先进应用的需求。本研究考察了石墨烯涂层对PEEK微球性能的影响。通过静电自吸附过程将功能化氧化石墨烯（CMG+）和石墨烯纳米片（GnPs）引入PEEK表面，随后进行高速混合和热压以制备PEEK-石墨烯纳米复合材料。系统分析了复合材料的结构、热性能、摩擦学和电学性能。结果表明，石墨烯作为成核剂，提高了纳米复合材料的结晶度。摩擦学测试表明，CMG+显著降低了摩擦系数，与纯PEEK相比，CMG1.0和CMG2.0样品的摩擦分别降低了54%和63%。此外，电学性能评估显示，表面电阻随石墨烯含量的增加而降低，在CMG+含量为1.0 wt.%时达到最佳导电性，并在添加GnPs后进一步提高。这些发现表明，功能化石墨烯涂层的PEEK微球由于纳米级相互作用而表现出优异的摩擦学和电学性能，使其适用于静电耗散和耐磨应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/7d1d8a5510cf/polymers-17-00721-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/3bd93c68d056/polymers-17-00721-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/1d05bcf6169b/polymers-17-00721-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/1c211bdcc547/polymers-17-00721-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/2d3f1424841d/polymers-17-00721-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/cb152e29bc0e/polymers-17-00721-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/0c5a168865cd/polymers-17-00721-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/a169e7987d7b/polymers-17-00721-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/865664bc7681/polymers-17-00721-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/2d5dc084be19/polymers-17-00721-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/7d1d8a5510cf/polymers-17-00721-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/3bd93c68d056/polymers-17-00721-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/1d05bcf6169b/polymers-17-00721-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/1c211bdcc547/polymers-17-00721-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/2d3f1424841d/polymers-17-00721-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/cb152e29bc0e/polymers-17-00721-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/0c5a168865cd/polymers-17-00721-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/a169e7987d7b/polymers-17-00721-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/865664bc7681/polymers-17-00721-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/2d5dc084be19/polymers-17-00721-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e12/11944534/7d1d8a5510cf/polymers-17-00721-g010.jpg

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