炭黑/硅橡胶复合材料,具有良好的导电性和柔韧性,可用于机器人传感器领域。在炭黑/硅橡胶复合材料中分别添加纳米二氧化硅和纳米三氧化二铝,用扫描电镜考察纳米粒子对导电炭黑在橡胶基体中的分散作用。测量其导电特性、压阻特性,考察了纳米粒子对该复合材料导电特性和压阻特性的影响。结果显示,适量添加纳米粒子,对炭黑具有分散作用和解离作用,可以得到具有导电性好、压阻特性线性好的导电橡胶复合材料,且添加二氧化硅效果优于三氧化二铝。
The composites of carbon black-filled silicon rubber are obtained aimed the usage in field of robotic sensor because of its conductivity and flexibility.The effects of the nano-silica and nano-alumina on the dispersion of carbon black in silicon rubber were analyzed with Scanning Electronic Microscopy(SEM). The conductivity and piezoresistance character were measured and the effects of nano particles were investigated.The results indicate that the nano particles have the effect of dispersion and erosion,and on optimum percentage,conductive rubber with better conductivity and linear piezoresistance was achieved.