논문 해외 국제전문학술지(SCI급) Effect of dispersion by three-roll milling on electrical properties and filler length of carbon nanotube composites
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2019-11
- 저자명 Ji-Hwan Ha, Sang-Eui Lee, Sung-Hoon Park
- 학술지명 Materials
- 발행국가 해외
- 논문언어 외국어
- 키워드 #carbon nanotube; composite; three-roll milling; CNT dispersion; filler length variation
- 원문 링크 https://www.mdpi.com/1996-1944/12/23/3823
홈페이지논문 초록 (Abstract)
For practical use of carbon nanotube (CNT) composites, especially in electronic applications, uniform dispersion of a high concentration of CNTs in a polymer matrix is a critical challenge. Three-roll milling is one of most reliable dispersion techniques. We investigate the effect of three-roll milling time on CNT length and the electrical properties of a CNT/polydimethylsiloxane composite film with 10 wt% CNTs. During the milling process, the CNT length is decreased from 10 to 1–4 μm by mechanical shear forces. The electrical conductivity increases after 1.5 min of milling owing to dispersion of the CNTs but decreases with increasing milling time owing to the decrease in the CNT length. Considering the changes in the electrical conductivity of the CNT composite and CNT length, we determined how to optimize the three-roll milling time to obtain a suitable dispersion state.