炭黑/硅橡胶复合材料的压阻特性研究与改进  

Study and Improvement on Piezoresistivity of Silicon Rubber/Carbon Black Compsoites

作　　者：王鹏[1] 丁天怀[1] 徐峰[1] 覃元臻[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084

出　　处：《传感技术学报》2004年第1期15-18,共4页Chinese Journal of Sensors and Actuators

摘　　要：我们对柔性挤压应力传感器 ,炭黑 /硅橡胶复合材料的压阻特性进行了研究 ,提出了其压力 -电阻的简化理论计算公式。实验研究表明 ,通过添加有机溶剂和SiO2 纳米粉可以有效地提高炭黑分布的均匀程度和复合材料的弹性模量 ,从而改善复合材料的压阻性能。用这种复合材料制备的力敏元件不受被测物体表面形状的限制 ,可以被广泛应用于各种规则和不规则曲面的挤压应力测量。In order to design and fabricate the flexible force sensor, we have researched the piezoresistivity of silicon rubber/carbon black composites and given the academic calculation formula between pressure and electrical resistivity. The experiments illustrate that the homogenization of carbon black and the elastic modulus of composites can be improved effectively by dispersing nanosize silica filler and using organic solvent. As a result, the piezoresistivity of composites can be improved. Moreover, the fore-sensitive device fabricated by the composites is free from the limitation of the surface shape of the tested objects which can be widely applied to various squeeze stress measurement on any regular and unregular curve surfaces.

关 键 词：炭黑/硅橡胶复合材料 柔性传感器 压阻 挤压应力 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB332[自动化与计算机技术—控制科学与工程]