Polyisoprene-nanostructured Carbon Black and Carbon Nanotube Composites as Progressive Tensile and Compressive Strain Sensing Materials

Abstracts of Junior EUROMAT 2006 2006
Juris Zavickis, Māris Knite, Velta Tupureina, Valdis Teteris, Igors Klemenoks, Armin Fuith

The change of electrical resistivity depending on mechanical loading applied (the tensoresistive and piezorezistive effect) in polyisoprene-nanostructured carbon nanoparticle composites (nanocomposites) is experimentally studied. Dependence of the electrical resistance on time, strain and stress is examined. High structure carbon nanoparticles (mean diameter 30 nm, dibuthyl phthalate adsorption 380ml/100g, specific surface 950 m2/g) and multi-wall carbon nanotubes (MWCNT) have been used as the filler. Solvent based mixing technology before curing for sample preparation is used. Finally the mechano-electric properties of different composites are compared and functional models of both piezo and tenzoresistive effect are proposed and practical usage fields are discussed as well. Conclusions are made, that multi wall carbon nanotube composites can be used as strain sensing elements at smaller strain ranges comparing with carbon black filled ones. On other hand they have certain resistivity “memory effect” during large (more than few %) strain deformations.

Atslēgas vārdi
Polyisoprene, carbon, nanocomposite, piesoresistive

Zavickis, J., Knite, M., Tupureina, V., Teteris, V., Klemenoks, I., Fuith, A. Polyisoprene-nanostructured Carbon Black and Carbon Nanotube Composites as Progressive Tensile and Compressive Strain Sensing Materials. No: Abstracts of Junior EUROMAT 2006, Šveice, Lausanne, 4.-8. septembris, 2006. Lausanne: , 2006, 11.-11.lpp.

Publikācijas valoda
English (en)