Wang Yudong, Yuan Jinhua, Zhao Xiaopeng, Yin Jianbo
Smart Materials Laboratory, Department of Applied Physics, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China.
Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China.
Materials (Basel). 2022 Jan 2;15(1):311. doi: 10.3390/ma15010311.
Due to their unique anisotropic morphology and properties, graphene-based materials have received extensive attention in the field of smart materials. Recent studies show that graphene-based materials have potential application as a dispersed phase to develop high-performance electrorheological (ER) fluids, a kind of smart suspension whose viscosity and viscoelastic properties can be adjusted by external electric fields. However, pure graphene is not suitable for use as the dispersed phase of ER fluids due to the electric short circuit caused by its high electrical conductivity under electric fields. However, graphene oxide (GO) and graphene-based composites are suitable for use as the dispersed phase of ER fluids and show significantly enhanced property. In this review, we look critically at the latest developments of ER fluids based on GO and graphene-based composites, including their preparation, electrically tunable ER property, and dispersed stability. The mechanism behind enhanced ER property is discussed according to dielectric spectrum analysis. Finally, we also propose the remaining challenges and possible developments for the future outlook in this field.
由于其独特的各向异性形态和性能，基于石墨烯的材料在智能材料领域受到了广泛关注。最近的研究表明，基于石墨烯的材料作为分散相具有开发高性能电流变（ER）流体的潜在应用，电流变流体是一种智能悬浮液，其粘度和粘弹性性能可通过外部电场进行调节。然而，由于纯石墨烯在电场下具有高电导率会导致电短路，因此不适合用作电流变流体的分散相。然而，氧化石墨烯（GO）和基于石墨烯的复合材料适合用作电流变流体的分散相，并显示出显著增强的性能。在这篇综述中，我们批判性地审视了基于氧化石墨烯和基于石墨烯的复合材料的电流变流体的最新进展，包括它们的制备、电可调电流变性能和分散稳定性。根据介电谱分析讨论了增强电流变性能背后的机制。最后，我们还提出了该领域未来展望中仍然存在的挑战和可能的发展方向。
