论文信息 - Synthesis and Characterization of Polyimide/silica Nanocomposite Films

Synthesis and Characterization of Polyimide/silica Nanocomposite Films

In the paper, a kind of polyimide nanocomposite films was made by synthesizing polyimide/silica nano-particle matrix resin through the hydrolysis and poly-condensation of varies ratio of tetraethoxysilane (TEOS) and dimethyldiethoxysilane (DMES) in the solution of polyamic acid (PAA) solution dissolved in N, N-dimethylacetamide (DMAc), followed by rotating it on glass substrates and heating at high temperature. The 3-aminopropyltriethoxysilane (APrTEOS), which serves as a coupling agent, was chosen to enhance the compatibility between the polyimide (PI) and the silica (SiO2). The chemical structure of the films was characterized by FT-IR. The results of TGA proved that the thermal stability can be improved by well dispersion of inorganic components not more than 16wt%.

Q. Lei | Y. Fan | S. Zeng | M. Y. Zhang | T. Dong

[1] Bor-Kuan Chen,et al. Synthesis and characterization of polyimide/silica hybrid nanocomposites , 2004 .

[2] L. Mascia,et al. Toughness enhancement of polyimides by in situ generation of silica particles , 2004 .

[3] L. Brožová,et al. Molecular dynamics in nanostructured polyimide–silica hybrid materials and their thermal stability , 2002 .

[4] L. Mascia,et al. Polyimide‐Silica Hybrids: Spectroscopy, Morphology and Mechanical Properties , 2001 .

[5] L. Brožová,et al. Molecular dynamics in nanostructured polyimide‐silica hybrid materials and their thermal stability , 1999 .

[6] J. Iroh,et al. Synthesis and Characterization of Polyimide/Silica Hybrid Composites , 1999 .

[7] K. L. Mittal,et al. Polyimides: Fundamentals and Applications , 1996 .

[8] L. Mascia,et al. Compatibility of polyimide-silicate ceramers induced by alkoxysilane silane coupling agents , 1994 .

[9] Ayusman Sen,et al. Molecular level ceramic/polymer composites. 2. Synthesis of polymer-trapped silica and titania nanoclusters , 1991 .