Abstract
Carbon nanotube (CNT) is increasingly applied as a reinforcement of polymer matrix composite because of extremely high mechanical properties. Among several forms of CNT reinforcement, CNT yarn can be a next-generation reinforcement which enables the use of CNTs in the macro-scale. In this study, untwisted CNT yarns were fabricated by the dry spinning method using a die and graphitized in order to develop CNT yarns with high strength and stiffness. Impure materials and defective structures on MWCNTs were removed after graphitization treatment. G/D ratio was improved more than 10 times. Stress transfer between constituent MWCNTs of CNT yarns became more effectively by removing impure materials. Consequently, macroscopic mechanical properties of CNT yarns were improved by the graphitization treatment in addition to improvement of MWCNT itself.
| Original language | English |
|---|---|
| Title of host publication | ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials |
| Publisher | European Conference on Composite Materials, ECCM |
| ISBN (Electronic) | 9783000533877 |
| Publication status | Published - 2016 |
| Event | 17th European Conference on Composite Materials, ECCM 2016 - Munich, Germany Duration: 2016 Jun 26 → 2016 Jun 30 |
Other
| Other | 17th European Conference on Composite Materials, ECCM 2016 |
|---|---|
| Country | Germany |
| City | Munich |
| Period | 16/6/26 → 16/6/30 |
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Keywords
- Carbon nanotube yarn
- Densification
- Graphitization
- Heat treatment
- High strength
ASJC Scopus subject areas
- Ceramics and Composites
Cite this
Development of untwisted carbon nanotube yarn with high strength by heat treatment. / Kim, Taesung; Nikawa, Hidefumi; Hosoi, Atsushi; Kawada, Hiroyuki.
ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 2016.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - Development of untwisted carbon nanotube yarn with high strength by heat treatment
AU - Kim, Taesung
AU - Nikawa, Hidefumi
AU - Hosoi, Atsushi
AU - Kawada, Hiroyuki
PY - 2016
Y1 - 2016
N2 - Carbon nanotube (CNT) is increasingly applied as a reinforcement of polymer matrix composite because of extremely high mechanical properties. Among several forms of CNT reinforcement, CNT yarn can be a next-generation reinforcement which enables the use of CNTs in the macro-scale. In this study, untwisted CNT yarns were fabricated by the dry spinning method using a die and graphitized in order to develop CNT yarns with high strength and stiffness. Impure materials and defective structures on MWCNTs were removed after graphitization treatment. G/D ratio was improved more than 10 times. Stress transfer between constituent MWCNTs of CNT yarns became more effectively by removing impure materials. Consequently, macroscopic mechanical properties of CNT yarns were improved by the graphitization treatment in addition to improvement of MWCNT itself.
AB - Carbon nanotube (CNT) is increasingly applied as a reinforcement of polymer matrix composite because of extremely high mechanical properties. Among several forms of CNT reinforcement, CNT yarn can be a next-generation reinforcement which enables the use of CNTs in the macro-scale. In this study, untwisted CNT yarns were fabricated by the dry spinning method using a die and graphitized in order to develop CNT yarns with high strength and stiffness. Impure materials and defective structures on MWCNTs were removed after graphitization treatment. G/D ratio was improved more than 10 times. Stress transfer between constituent MWCNTs of CNT yarns became more effectively by removing impure materials. Consequently, macroscopic mechanical properties of CNT yarns were improved by the graphitization treatment in addition to improvement of MWCNT itself.
KW - Carbon nanotube yarn
KW - Densification
KW - Graphitization
KW - Heat treatment
KW - High strength
UR - http://www.scopus.com/inward/record.url?scp=85018610971&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85018610971&partnerID=8YFLogxK
M3 - Conference contribution
BT - ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
PB - European Conference on Composite Materials, ECCM
ER -