High-piezoresistive sensitivity of silicone matrix composites with low metal filler content

作者：Li, Yuting; Liu, Zhiyong; Wang, Tianxing; Shang, Shuying^*

来源：Materials Letters, 2016, 171: 252-254.

DOI：10.1016/j.matlet.2016.02.093

• Composites
• Piezoresistivity
• Gauge factor
• Pressure
• Conductivity

A series of nickel/silicone rubber composites, co-filled with micron nickel and submicron nickel particles, were made in this work. The composites with mass ratio of nickel/silicone rubber under 1.8:1 had a high pressure sensitivity; the conductivity changed 9 orders under a low pressure around 0.096 MPa. To our knowledge, this is the lowest content of fillers reported to date in high sensitive polymer-based composites. Furthermore, the composites show good repeatability of piezoresistivity, indicating attractive application prospect. The gauge factor of the composites was studied and a master curve appeared for the composites with different conductive fillers. It showed that the gauge factor of the composites was strain-controlled.

• 出版日期2016-5-15
• 单位河南师范大学