Effect of Filler Alignment on Piezo-Resistive and Mechanical Properties of Carbon Nanotube Composites

Materials

Hyunwoo Kim¹  Sung-Hoon Park¹  Soon-Kook Hong²  Jae-Kwan Ryu³ 

[1] Department of Mechanical Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-Gu, Seoul 06978, Korea;Department of Mechanical and Naval Architectural Engineering, Naval Academy, 1 Jungwon-ro, Jinhae-gu, Changwon-si, Kyungsangnam-do 440-749, Korea;LIG Nex1, 207 Mabuk-ro, Giheung-gu, Yongin-si, Gyeonggi-do 16911, Korea;

关键词: carbon nanotube;    polymer composite;    aligned MWCNT;    piezo-resistive characteristics;   

DOI  :  10.3390/ma13112598

来源: DOAJ

【 摘 要 】

Highly aligned multi-walled carbon nanotube (MWCNT) polymer composites were fabricated via a roll-to-roll milling process; the alignment of the MWCNTs could be controlled by varying the speed of the rotating rolls. The effect of MWCNT alignment on the polymer matrix was morphologically observed and quantitatively characterized using polarized Raman spectroscopy. To provide a more detailed comparison, MWCNT composites with alignment in the transverse direction and random alignment were fabricated and tested. Enhanced mechanical and electrical properties were obtained for the aligned MWCNT composite, which can be attributed to the efficient electrical network and load transfer, respectively. In addition, a cyclic stretching test was conducted to evaluate the piezo-resistive characteristics of the aligned MWCNT composites. The composites with an aligned filler configuration showed an exceptionally high degree of strain sensitivity compared to the other composites.

【 授权许可】

Unknown