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| Experimental Investigation on Interfacial Bonding Performance between Nano-Fe3O4 Magnetic Particles Reinforced Silicone Rubber with Ferrite |
| Received:February 26, 2024 Revised:March 25, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.04.015 |
| KeyWord:Nano-Fe3O4 reinforced silicone rubber interface bonding model bonding strength hyperelastic cohesive zone model |
| Author | Institution |
| WANG Gongqi |
Institute of Systems Engineering, China Academy of Engineering Physics, Sichuan Mianyang , China |
| HUANG Xicheng |
Institute of Systems Engineering, China Academy of Engineering Physics, Sichuan Mianyang , China |
| WAN Qiang |
Institute of Systems Engineering, China Academy of Engineering Physics, Sichuan Mianyang , China |
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| Abstract: |
| The work aims to investigate the interfacial bonding characteristics of nano-Fe3O4 reinforced silicone rubber with ferrite. Quasi-static tensile tests, interfacial normal and tangential bonding strength tests were conducted. The hyperelasticity theory was applied to analyze the tensile behavior of nano-Fe3O4 reinforced silicone rubber, and bilinear and exponential cohesive models were utilized to analyze the interfacial damage behavior of nano-Fe3O4 reinforced with ferrite. The engineering stress-strain curves of silicone rubber reinforced by nano-Fe3O4 particles with different content were obtained by tensile tests, and two-parameter Mooney-Rivlin model was gotten as well. The error of the model in a small deformation range was less than 1%, and that in a large deformation range was 3.8%. Through interfacial strength tests, the normal and tangential force-displacement curves, the interfacial bonding strength and interfacial fracture energy, and the parameters of the interfacial cohesive model for the interface of silicone rubbers with different nano-Fe3O4 contents with ferrite were obtained. The experiments show that the tensile strength of silicone rubber and the interfacial normal bonding strength and fracture energy increase with nano-Fe3O4 content, while the tangential bonding strength and fracture energy do not depend significantly on the content. The bilinear cohesion model is more suitable for the characterization of the interfacial bonding strength of nano-Fe3O4 reinforced silicone rubber and ferrite, and the interfacial normal and tangential bond models are in better agreement with the measured values. |
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