1. Flexible tactile sensor materials based on carbon microcoil/silicone-rubber porous composites
- Author
-
Yukio Hishikawa, Keijiro Yoshimura, and Kazunori Nakano
- Subjects
Materials science ,Composite number ,General Engineering ,chemistry.chemical_element ,02 engineering and technology ,Microcoil ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Silicone rubber ,01 natural sciences ,0104 chemical sciences ,chemistry.chemical_compound ,chemistry ,Natural rubber ,visual_art ,Ceramics and Composites ,visual_art.visual_art_medium ,Composite material ,0210 nano-technology ,Porosity ,Elastic modulus ,Carbon ,Tactile sensor - Abstract
Mechanical and electrical properties of porous composites consisting of spring-shape carbon microcoils (CMCs) and silicone-rubber were investigated. The CMC/rubber porous composites having 71–81% porosity had compressive elastic moduli of 0.04–0.1 MPa which were 2–4% of a composite having the same ingredients without pores. The porous structure gave the composites not only the flexibility but a unique piezoresistivity in a wide compressive strain range. Resistivities of the porous composites increased over 104 times with a compressive strain up to 80%, while those of other porous composites including fibrous or particulate carbon fillers decreased only several tens of percent. CMC/rubber porous composites having such a unique piezoresistivity enabled us to develop a new tactile sensor system.
- Published
- 2016