Experimental study on force sensitivity of the conductivity of carbon nanotubes-modified epoxy resins

Chun Feng Wan, Bo Wen, Jian Guo Dai, Jian Xun Liu, Yu Zhong Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The addition of a conductive material into polymer improves its mechanical properties, electrical properties and thermal conductivity and bestows it with good self-sensing and self-adjusting properties. In this study, carbon nanotubes-modified epoxy resins (CNTs-EP) were successfully prepared with good dispersion through the combined methods of three roller rolling, ultrasonic processing and adding surfactant. Tests were conducted to evaluate the resistivity of unloaded modified epoxy resins with different mixing amounts of carbon nanotubes (CNTs), to determine the conductive percolation threshold. On the basis of the test results, a series of monotonic and cyclic uniaxial tensile tests were then conducted to investigate the force sensitivity of the conductivity of epoxy resins modified with different mixing amounts of CNTs. The relationship between the stress and the resistivity under various mixing amounts was studied, indicating that the resistance response could play a good warning role on the damage of the modified polymer material.

Original languageEnglish
Article number1174
JournalMaterials
Volume11
Issue number7
DOIs
Publication statusPublished - 10 Jul 2018

Keywords

  • Carbon nanotubes
  • Epoxy resin
  • Force sensitivity
  • Mixing amount
  • Resistivity

ASJC Scopus subject areas

  • Materials Science(all)

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