Document Type

Article

Disciplines

2. ENGINEERING AND TECHNOLOGY

Publication Details

https://www.sciencedirect.com/science/article/pii/S0142941823000156

https://doi.org/10.1016/j.polymertesting.2023.107935

Abstract

Magnetorheological elastomers (MREs) are smart materials whose mechanical properties can quickly respond to changes in the external magnetic field. This phenomenon is known as the magnetorheological (MR) effect and is the key to the application of magnetorheological elastomers. Previous studies have found that the interface between magnetic particles and elastomers is a critical factor that influencing the MR effect of MREs. To improve the interfacial interaction between silicone rubber (SR) and carbonyl iron (CI) particles, in the MREs considered in this work, CI particles were subjected to surface modification through polydopamine (PDA) deposition and n-dodecyltrimethoxysilane (DTMS) grafting. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirmed the successful deposition of PDA@DTMS coating layer with a thickness of about 30.6 nm. The tensile strength of anisotropic MREs increased by 31.5% after surface modification of CI particles. The study of magnetic field induced changes in viscoelastic properties showed that CI-PDA@DTMS based MREs exhibited a superior MR effect to the CI-based MREs.

DOI

https://doi.org/10.1016/j.polymertesting.2023.107935

Funder

National Natural Science Foundation of China (Grant no. 52003130), the Shandong Provincial Natural Science Foundation, China (Grant no. ZR2020QE087) and the Qingdao Postdoctoral Applied Basic Research Project.

Creative Commons License

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.

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