Details
| Original language | English |
|---|---|
| Pages (from-to) | 22-30 |
| Number of pages | 9 |
| Journal | KGK Kautschuk Gummi Kunststoffe |
| Volume | 73 |
| Issue number | 7-8 |
| Publication status | Published - Aug 2020 |
| Externally published | Yes |
Abstract
In order to create electrical conductive polydimethylsiloxane/carbon nanotubecomposites with high flexibility, it is inevitable to minimize the filler content. To hold conductivity at a minimum of CNT content, an appropriate filler dispersion has to be realized. This was achieved by applying shear forces during compounding by modifying the mixing conditions to an optimum. The electrical percolation threshold is determined to be at 0.9 wt.% of CNTs. An optimized roll mill step enabled to further increase the conductivity and lead to an orientation of CNTs. By adding a high-dispersible silica, a significant shift of the percolation threshold towards 0.5 wt.% of CNTs was observed. Adding silica amounts of ≥ 15.0 wt.% resulted in an increase in stiffness and density, which is contradicting for the application in lightweight, soft and flexible components.
Keywords
- Dispersion, Flexibility, Percolation threshold, Planetary mixer, Shear forces
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Polymers and Plastics
- Engineering(all)
- Industrial and Manufacturing Engineering
- Materials Science(all)
- Materials Chemistry
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In: KGK Kautschuk Gummi Kunststoffe, Vol. 73, No. 7-8, 08.2020, p. 22-30.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Development of soft electrical conductive PDMS/CNT-Composites with extremely low CNT Content
AU - Omelan, Marvin Christopher Vincenzo
AU - Diekmann, Astrid
AU - Giese, Ulrich
N1 - Funding Information: We owe thanks to the Federal Ministry of Education and Research (BMBF), KMU innovativ – Flowtrode, 13GW0050C.
PY - 2020/8
Y1 - 2020/8
N2 - In order to create electrical conductive polydimethylsiloxane/carbon nanotubecomposites with high flexibility, it is inevitable to minimize the filler content. To hold conductivity at a minimum of CNT content, an appropriate filler dispersion has to be realized. This was achieved by applying shear forces during compounding by modifying the mixing conditions to an optimum. The electrical percolation threshold is determined to be at 0.9 wt.% of CNTs. An optimized roll mill step enabled to further increase the conductivity and lead to an orientation of CNTs. By adding a high-dispersible silica, a significant shift of the percolation threshold towards 0.5 wt.% of CNTs was observed. Adding silica amounts of ≥ 15.0 wt.% resulted in an increase in stiffness and density, which is contradicting for the application in lightweight, soft and flexible components.
AB - In order to create electrical conductive polydimethylsiloxane/carbon nanotubecomposites with high flexibility, it is inevitable to minimize the filler content. To hold conductivity at a minimum of CNT content, an appropriate filler dispersion has to be realized. This was achieved by applying shear forces during compounding by modifying the mixing conditions to an optimum. The electrical percolation threshold is determined to be at 0.9 wt.% of CNTs. An optimized roll mill step enabled to further increase the conductivity and lead to an orientation of CNTs. By adding a high-dispersible silica, a significant shift of the percolation threshold towards 0.5 wt.% of CNTs was observed. Adding silica amounts of ≥ 15.0 wt.% resulted in an increase in stiffness and density, which is contradicting for the application in lightweight, soft and flexible components.
KW - Dispersion
KW - Flexibility
KW - Percolation threshold
KW - Planetary mixer
KW - Shear forces
UR - http://www.scopus.com/inward/record.url?scp=85090135037&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85090135037
VL - 73
SP - 22
EP - 30
JO - KGK Kautschuk Gummi Kunststoffe
JF - KGK Kautschuk Gummi Kunststoffe
SN - 0948-3276
IS - 7-8
ER -