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基于炭黑填充导电橡胶的力敏传感器的灵敏度

, PP. 51-55

Keywords: 复合材料,灵敏度,压力,炭黑,导电橡胶,柔性触觉传感器

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Abstract:

以通用有效介质理论为基础,给出了炭黑填充导电橡胶(炭黑/橡胶)的力敏传感器灵敏度计算方程。采用该方程并结合形变和压阻效应,分析了影响力敏导电炭黑/橡胶的灵敏度的主要参数。结果表明:炭黑体积分数是影响力敏导电炭黑/橡胶的灵敏度的主要参数。当炭黑体积分数在临界体积分数附近时,力敏导电炭黑/橡胶的灵敏度为0.1~11.5MPa-1,其敏感机制主要为压阻效应。当炭黑体积分数在渗流区时,灵敏度为0.2~3.6MPa-1,其敏感机制还与接触压力的大小有关,压力较小时,主要为压阻效应;压力较大时,主要为应变效应。若炭黑体积分数在传导区,灵敏度为0.3~1.7MPa-1,其敏感机制主要为应变效应。

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