Londono Monsalve J M, Kovalska E, Craciun M F, Marsico M R
Department of Engineering, University of Exeter, Exeter EX4 4QF, UK.
Philos Trans A Math Phys Eng Sci. 2024 Oct 23;382(2281):20230324. doi: 10.1098/rsta.2023.0324. Epub 2024 Sep 9.
This study presents an experimental investigation of the mechanical behaviour of recycled rubber pads coated with graphene nanoplatelets. The investigation is part of an effort to develop a novel rubber-based composite that aims to reroute rubber from end-of-life tyres from illegal landfills and incineration back into the market in the form of a novel composite for vibration isolation. Graphene nanoplatelets were deposited on rubber pads via ultrasonic spray coating. The pads were made of a combination of recycled rubber (from tyres) and virgin rubber. A comprehensive analysis of the structural and chemical properties of the graphene coating, ensuring its integrity on the rubber substrate, was performed by combining surface topography, Raman and Fourier-transform infrared (FTIR) spectroscopy. Stacked coated pads were cured and tested dynamically in compression and shear under cyclic loading. Results showed promising improvements in the mechanical properties, in particular, in compressive stiffness and damping of the coated specimens with respect to their uncoated counterparts, laying the foundation for using graphene-enhanced recycled rubber as a novel composite.This article is part of the theme issue 'Celebrating the 15th anniversary of the Royal Society Newton International Fellowship'.
本研究对涂覆有石墨烯纳米片的再生橡胶垫的力学行为进行了实验研究。该研究是开发一种新型橡胶基复合材料工作的一部分，该复合材料旨在将废旧轮胎中的橡胶从非法填埋场和焚烧处理中转移出来，以一种用于隔振的新型复合材料形式重新投入市场。通过超声喷涂将石墨烯纳米片沉积在橡胶垫上。这些垫子由再生橡胶（来自轮胎）和原生橡胶组合制成。通过结合表面形貌、拉曼光谱和傅里叶变换红外（FTIR）光谱，对石墨烯涂层的结构和化学性质进行了全面分析，以确保其在橡胶基材上的完整性。将堆叠的涂覆垫子进行固化，并在循环载荷下进行动态压缩和剪切测试。结果表明，与未涂覆的对应物相比，涂覆试样的力学性能有了显著改善，特别是在压缩刚度和阻尼方面，为使用石墨烯增强再生橡胶作为新型复合材料奠定了基础。本文是主题为“庆祝皇家学会牛顿国际奖学金设立15周年”的一部分。
