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Publikācija: Electrical Properties of Conductive Polyisoprene/High Structured Carbon Black Composites in the Temperature Range 90 – 335 K

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Nosaukums oriģinālvalodā Electrical Properties of Conductive Polyisoprene/High Structured Carbon Black Composites in the Temperature Range 90 – 335 K
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Autori Sanita Zīke
Raimonds Orlovs
Māris Knite
Juris Zavickis
Valdis Teteris
Atslēgas vārdi carbon black, nanocomposite, piesoresistive
Anotācija This presentation deals with electrical properties study of high structured carbon black/polyisoprene (HSCB/PI) composites of various HSCB concentrations (8, 9, 10 and 11 mass parts) in the temperature range 90K – 335K. The DC electrical resistance of the sample was measured as a function of temperature. Composites exhibit negative temperature coefficient of resistivity (TCR) below the room temperature. The resistivity varies exponentially with temperature similar to a semiconducting behavior. Similar to doped semiconducting materials, composites have two different activation energies. The activation energies decrease with increasing HSCB concentration. Hysteresis of R(T) is not observed. Above the room temperature composites show positive TCR. Coefficient decreases with increasing HSCB concentration. There is observed small hysteresis of R(T). The resistance change with temperature in both cases is reversible. We have found that the investigated composite has wide multifunctional sensor properties. It shows temperature, strain and organic solvent vapor sensing behavior.
Atsauce Zīke, S., Orlovs, R., Knite, M., Zavickis, J., Teteris, V. Electrical Properties of Conductive Polyisoprene/High Structured Carbon Black Composites in the Temperature Range 90 – 335 K. No: Abstracts of E-MRS Spring Meeting 2008, Francija, Strasbourg, 26.-30. maijs, 2008. Strasbourg: Elsevier, 2008, A-11.-A-11.lpp.
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