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0.1～11.5 MPa-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0.2～3.6 MPa-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0.3～1.7 MPa-1,其敏感机制主要为应变效应.
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