Wear, thermal, and physical properties of fluorine-containing polyimide/silica hybrid nanocomposite coatings

ÇAKIR M., AKIN E.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.136, no.16, 2019 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 136 Issue: 16
  • Publication Date: 2019
  • Doi Number: 10.1002/app.47399
  • Journal Name: JOURNAL OF APPLIED POLYMER SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: fluorine-containing polyimide coatings, nanocomposite coatings, polyimide-silica hybrid coatings
  • Marmara University Affiliated: Yes

Abstract

This study prepared fluorine and SiO2 particles containing organic-inorganic hybrid polyimide nanocomposite coatings (PISFs) with inorganic content in the range of 5-20% in pure polyimide solutions via the sol-gel process. Polyimide hybrid structures containing fluorine and SiO2 particles were synthesized by using perfluorooctyltriethoxysilane and tetraethyl orthosilicate. These formulations were applied on aluminum sheets by using a 75 mu m wire wound applicator, and the coatings were cured for 8 h at room temperature and then 24 h at 100 degrees C. Increased inorganic contents caused slight decreases in the initial decomposition temperatures, but the char yield values increased for PISF15 and PISF20. All samples exhibited hydrophobic properties. When all samples were compared, PISF5 and PISF10 exhibited hydrophobicity, high wear resistance and thermal properties. Additionally, PISF5 and PISF10 showed high adhesion, hardness, and methyl ethyl ketone solvent resistance. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47399.