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Multi-Functional Properties of MWCNT/PVA Buckypapers Fabricated by Vacuum Filtration Combined with Hot Press: Thermal Electrical and Electromagnetic Shielding

机译:用真空过滤制造的MWCNT / PVA碎片蛋白的多功能性能加上热压机:热电气和电磁屏蔽

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摘要

The applications of pure multi-walled carbon nanotubes (MWCNTs) buckypapers are still limited due to their unavoidable microano-sized pores structures. In this work, polyvinyl alcohol (PVA) was added to a uniform MWCNTs suspension to form MWCNT/PVA buckypapers by vacuum infiltration combined with a hot press method. The results showed an improvement in the thermal, electrical, and electromagnetic interference (EMI) shielding properties due to the formation of dense MWCNTs networks. The thermal and electrical properties rose from 1.394 W/m·k to 2.473 W/m·k and 463.5 S/m to 714.3 S/m, respectively. The EMI performance reached 27.08 dB. On the other hand, ABAQUS finite element software was used to simulate the coupled temperature-displacement performance. The electronic component module with buckypapers revealed a homogeneous temperature and thermal stress distribution. In sum, the proposed method looks promising for the easy preparation of multi-functional nanocomposites at low-cost.
机译:由于其不可避免的微/纳米尺寸的孔结构,纯多壁碳纳米管(MWCNT)抑制率的应用仍然有限。在这项工作中,将聚乙烯醇(PVA)加入到均匀的MWCNTs悬浮液中以通过真空渗透与热压法合并形成MWCNT / PVA乳蛋白。结果表明,由于致密MWCNTS网络的形成,在热电,电气和电磁干扰(EMI)屏蔽性能的改善。热电平和电气性能分别从1.394W / m·k升至2.473W / m·K和463.5 s / m至714.3 s / m。 EMI性能达到27.08 dB。另一方面,ABAQUS有限元软件用于模拟耦合温度位移性能。具有Buckypapers的电子元件模块显示出均匀的温度和热应力分布。总之,所提出的方法希望以低成本轻松制备多功能纳米复合材料。

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