Mechanical and electrical property improvement in CNT/Nylon composites through drawing and stretching

Xin Wang, Philip D. Bradford, Wei Liu, Haibo Zhao, Yoku Inoue, Jon Paul Maria, Qingwen Li, Fuh Gwo Yuan, Yuntian Zhu

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

The excellent mechanical properties of carbon nanotubes (CNTs) make them the ideal reinforcements for high performance composites. The misalignment and waviness of CNTs within composites are two major issues that limit the reinforcing efficiency. We report an effective method to increase the strength and stiffness of high volume fraction, aligned CNT composites by reducing CNT waviness using a drawing and stretching approach. Stretching the composites after fabrication improved the ultimate strength by 50%, 150%, and 190% corresponding to stretch ratios of 2%, 4% and 7%, respectively. Improvement of the electrical conductivities exhibited a similar trend. These results demonstrate the importance of straightening and aligning CNTs in improving the composite strength and electrical conductivity.

Original languageEnglish (US)
Pages (from-to)1677-1683
Number of pages7
JournalComposites Science and Technology
Volume71
Issue number14
DOIs
StatePublished - Sep 30 2011

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Engineering(all)

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