In the present study, silicone rubber reinforced with ketjenblack and barium titanate were fabricated using high temperature compression molding method. These particulate composites are characterized for piezoresistive sensitivity. Ketjenblack and barium titanate are the conducting and dielectric fillers in the high temperature vulcanized silicone rubber matrix. The effects of ketjenblack and barium titanate fillers, filler loading, amount of curing agent, curing temperature and mixing time on the piezoresistive properties of these composites were investigated. The piezoresistive sensitivity recorded maximum values of 3.7(10^–3) (kPa)⁻¹ for dielectric and dielectric-conductive composites. The linear variation of normalized resistance change was observed for change in pressure up to 20 kPa. The dielectric composite sensitivity increases with reduction in dielectric filler and curing agent loadings, increasing with mixing time and curing temperature. The piezoresistive sensitivity for dielectric-conductive composites depends on ketjenblack and barium titanate filler loading. These composites demonstrate interaction effects among the factors.

在本研究中，使用 ketjenblack 和钛酸钡增强的硅橡胶是使用高温压缩成型方法制造的。这些颗粒复合材料的特点是具有压阻灵敏度。Ketjenblack 和钛酸钡是高温硫化硅橡胶基体中的导电和介电填料。研究了科琴黑和钛酸钡填料、填料用量、固化剂用量、固化温度和混合时间对这些复合材料压阻性能的影响。压阻灵敏度记录的最大值为 3.7(10 ^–3 ) (kPa) ^-1用于介电和介电导电复合材料。对于高达 20 kPa 的压力变化，观察到归一化电阻变化的线性变化。介电复合材料的敏感性随着介电填料和固化剂用量的减少而增加，随着混合时间和固化温度的增加而增加。介电导电复合材料的压阻灵敏度取决于科琴黑和钛酸钡填料的负载。这些复合材料证明了因素之间的交互作用。