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The property and microstructure study of polyimide/nano-TiO2 hybrid films with sandwich structures

  • Xiaoxu Liu
  • , Jinghua Yin
  • , Yunan Kong
  • , Minghua Chen
  • , Yu Feng
  • , Zhonghua Wu
  • , Bo Su
  • , Qingquan Lei
  • Harbin University of Science and Technology
  • Heilongjiang University of Science and Technology
  • CAS - Institute of High Energy Physics

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

Polyimide (PI)/Titanium dioxide (TiO2) nanocomposite films were prepared by in-situ polymerization method and sandwich structures (PI-TiO 2/PI/PI-TiO2) were obtained. The microstructures, as well as the electrical and mechanical properties of hybrid films were characterized and analyzed. The results indicate that the TiO2 nanoparticles were homogeneously dispersed in the hybrid films. Among all the tested samples, the electrical insulation and mechanical properties of tri-layered PI/TiO 2 nanocomposite films with 5 wt.% doping concentration are the best. The breakdown field strength and volume resistivity of PI/TiO2 composite film with sandwich structures are 216.5 (kV/mm) and 0.847 × 1017 (Ω cm),which are 8% and 20% higher than those ofmonolayer PI composite film, respectively.

Original languageEnglish
Pages (from-to)54-58
Number of pages5
JournalThin Solid Films
Volume544
DOIs
StatePublished - 1 Oct 2013
Externally publishedYes

Keywords

  • Composite
  • Electrical
  • Mechanical
  • Sandwich structures

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