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放电电压对电磁粉末成型法制备的石墨烯/聚醚酮酮复合样品微观结构的影响

Effect of Discharge Voltage on the Microstructure of Graphene/PEKK Composite Samples by Electromagnetic Powder Molding.

作者信息

Xu Fan, Gao Ming, Wang Hui-Xiong, Wu Xue-Lian, Liu Hong, Ma Chao, Yao Quan-Tong, Zhao Hui-Yan

机构信息

School of Mechanical Engineering, Jiangsu University, No. 301 Xuefu Road, Zhenjiang 212013, China.

School of Mechanical Engineering & Automation, University of Science and Technology Liaoning, No. 189 Qianshan Centre Road, Anshan 114051, China.

出版信息

Polymers (Basel). 2023 Jul 31;15(15):3256. doi: 10.3390/polym15153256.

DOI:10.3390/polym15153256
PMID:37571150
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10421528/
Abstract

The light weight, electrical conductivity, environmental friendliness, and high mechanical properties of graphene/PEKK composites make them popular in biomedical, electronic component and aerospace fields. However, the compaction density and carbonization of the specimen influence the microstructure and conductivity of the graphene/PEKK composite prepared by in situ polymerization, so electromagnetic-assisted molding was used to manufacture products to avoid carbonization and enhance the compaction density. The effects of different discharge voltages on the microstructure of the formed graphene/PEKK specimens were compared. Increasing the discharge voltage will lead to a closer distribution of flake graphene in the matrix to improve the compaction density, mechanical performance and conductivity. At the same time, the numerical analysis model was validated by comparison with the compaction density of the experimental results. Based on this research, the stress/strain distribution on the specimen was obtained with increasing discharge voltages.

摘要

石墨烯/聚醚酮酮（PEKK）复合材料的轻质、导电性、环境友好性和高机械性能使其在生物医学、电子元件和航空航天领域广受欢迎。然而，试样的压实密度和碳化会影响通过原位聚合制备的石墨烯/PEKK复合材料的微观结构和导电性，因此采用电磁辅助成型来制造产品，以避免碳化并提高压实密度。比较了不同放电电压对成型的石墨烯/PEKK试样微观结构的影响。提高放电电压会使片状石墨烯在基体中的分布更紧密，从而提高压实密度、机械性能和导电性。同时，通过与实验结果的压实密度进行比较，验证了数值分析模型。基于这项研究，获得了随着放电电压增加试样上的应力/应变分布。

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本文引用的文献

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2
A Density-Dependent Modified Doraivelu Model for the Cold Compaction of Poly (Ether Ketone Ketone) Powders.用于聚醚酮酮粉末冷压实的密度依赖型修正多拉伊韦卢模型
Polymers (Basel). 2022 Mar 21;14(6):1270. doi: 10.3390/polym14061270.
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Mechanical performance of graphene/poly(ether ketone ketone) composite sheets by hot pressing.热压法制备石墨烯/聚醚酮酮复合片材的力学性能
Sci Rep. 2022 Mar 8;12(1):4114. doi: 10.1038/s41598-022-08221-0.
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Investigation of Electromagnetic Pulse Compaction on Conducting Graphene/PEKK Composite Powder.导电石墨烯/聚醚酮酮复合粉末的电磁脉冲压实研究
Materials (Basel). 2021 Jan 30;14(3):636. doi: 10.3390/ma14030636.
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Nano Lett. 2008 Mar;8(3):902-7. doi: 10.1021/nl0731872. Epub 2008 Feb 20.