纳米Fe3O4增强硅橡胶与铁氧体的界面黏结特性试验研究
Experimental Investigation on Interfacial Bonding Performance between Nano-Fe3O4 Magnetic Particles Reinforced Silicone Rubber with Ferrite
王功起 1黄西成 1万强1
作者信息
- 1. 中国工程物理研究院总体工程研究所,四川 绵阳 621999
- 折叠
摘要
目的 探究纳米Fe3O4增强硅橡胶与铁氧体的界面黏结特性.方法 分别开展准静态拉伸试验、界面法向和切向黏结强度试验.采用超弹性理论,分析纳米Fe3O4增强硅橡胶材料的拉伸行为,采用双线性和指数内聚力模型,分析纳米 Fe3O4 增强与铁氧体的界面破坏行为.结果 通过拉伸试验获得了不同纳米 Fe3O4 含量的硅橡胶的工程应力应变曲线及两参数Mooney-Rivlin模型,小变形范围的模型误差在 1%以内,大变形范围的最大误差为 3.8%.通过界面强度试验,获得了不同纳米 Fe3O4 含量的硅橡胶和铁氧体界面的法向和切向力-位移曲线、黏结强度和界面断裂能,得到了界面法向和切向黏结强度内聚力模型参数.结论 随着纳米Fe3O4含量增加,硅橡胶的拉伸强度增加,界面法向黏结强度和断裂能增大,而切向黏结强度和断裂能变化不显著.双线性内聚力模型更适合作为纳米Fe3O4 增强硅橡胶与铁氧体的界面黏结强度表征模型,界面法向和切向黏结强度变化规律与实测值的吻合程度更高.
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 cohe-sive 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 in-terface 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.
关键词
纳米Fe3O4增强硅橡胶/界面模型/黏结强度/超弹性/内聚力模型Key words
Nano-Fe3O4 reinforced silicone rubber/interface bonding model/bonding strength/hyperelastic/cohesive zone model引用本文复制引用
基金项目
国家自然科学基金委员会-中国工程物理研究院NSAF联合基金(U2130206)
出版年
2024
NETL
NSTL
万方数据