论文部分内容阅读
以三元嵌段共聚硅橡胶为基体,Fe73.5Cu1Nb3Si13.5B9软磁粉为应力敏感填充粒子,采用机械共混和精密铸压热成型方法制备出系列粉体含量的Fe73.5Cu1Nb3Si13.5B9软磁粉/硅橡胶接触应力敏感复合材料,重点研究了其交流阻抗、直流电阻、粒子间及粒子与硅橡胶间相互作用程度等性能的逾渗特性。研究表明,该柔性力敏复合材料具有较显著的交流阻抗双逾渗特性。分析发现,“第一逾渗区”内材料的交流阻抗值由粒子的隧道跃迁主导,“第二逾渗区”内材料的交流阻抗大小取决于Fe73.5Cu1Nb3Si13.5B9粒子链间的接触电阻值。
Based on ternary block copolymerized silicone rubber, Fe73.5Cu1Nb3Si13.5B9 soft magnetic powder is stress-sensitive filler particles. Fe73.5Cu1Nb3Si13.5B9 soft magnetic powder / silicon powder was prepared by mechanical blending and precision casting and thermoforming Rubber touches the stress sensitive composite materials, and focuses on the percolation characteristics of AC impedance, DC resistance, the interaction between particles and silicon rubber and other properties. Studies have shown that the flexible force sensitive composite has a more significant double permeability characteristics of AC impedance. The analysis shows that the AC impedance of the material in “the first percolation zone” is dominated by the tunnel transition of the particles and the magnitude of the AC impedance of the material in the “second percolation zone” depends on the inter-particle chain of Fe73.5Cu1Nb3Si13.5B9 The contact resistance.