基于微流控系统的磁流变胶微观结构演化与磁敏行为分析  

Microstructural Evolution and Magneto Sensitive Behavior ofMagnetorheological Gel Based on Microfluidic System

作　　者：甘如饴 浮洁[1] 綦松 余淼[1] GAN Ruyi;FU Jie;QI Song;YU Miao(Key Lab for Optoelectronic Technology and Systems,Ministry of Education,College of Optoelectronic Engineering,Chongqing University,Chongqing,400044,China)

机构地区：[1]重庆大学光电工程学院,光电技术及系统教育部重点实验室,重庆400044

出　　处：《材料导报》2024年第21期256-260,共5页Materials Reports

基　　金：国家自然科学基金(51875056;12372146)。

摘　　要：作为磁敏智能材料的重要一员,磁流变胶的大阻尼和抗沉降特性使其在大幅振动衰减和缓冲领域具有广阔的应用前景。然而,传统宏观测试方法难以说明微观结构与宏观力学性能之间的机理联系,因此,通过直观表征微观结构的演化,揭示材料在多场下的力磁耦合机制具有重要意义。故本工作采用微流控测试系统对磁流变胶的微观结构的演化与磁敏行为进行了研究,并预测了多场耦合下材料在管道结构中的宏观力学特性。同时,通过对不同流速以及磁感应强度下的磁流变胶微观结构的定性观察和定量分析,阐述了多场耦合下磁流变胶微观结构的演化与磁敏行为的统计规律。As an important member of magnetic-controlled intelligent materials,magnetorheological gel(MRG)have an important application prospect and potential in the field of large vibration reduction and mitigation due to its excellent damping and small settling characteristics.However,traditional macroscopic methods are difficult to explain the mechanism between microstructures and macroscopic mechanical properties.Hence,it is of great significance to visually characterize the evolution of microstructures and reveal the magneto-mechanical coupling mechanism of materials under multiple fields.Therefore,in this work,the microfluidic measurement system is used to study the microstructures evolution and magneto-sensitive behavior of MRG,and predict the macroscopic mechanical properties of the material in the tube under multi-field coupling.Meanwhile,through qualitative observation and quantitative analysis of MRG microstructures at different velocities and magnetic flux densities,the statistical laws of MRG microstructure evolution and magneto-sensitive behavior under multi-field coupling are elaborated.

关 键 词：磁流变胶 微流控测试系统 微观结构 磁敏行为 

分 类 号：TB381[一般工业技术—材料科学与工程]