Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 36, Issue 8, Pages 1152-1157Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2004.12.010
Keywords
polymer-matrix composite (PMCs); thermal properties; electron microscopy; dielectric constant
Ask authors/readers for more resources
The polyimide/barium titanate (BaTiO3) Composites were successfully synthesized through a colloidal process. In this process, the preparing suspension of fine BaTiO3 particles in poly(amic acid) solution, the film casting of the suspension, and the imidization with heat treatment are involved in sequence. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), thermal-gravimetric analyses (TGA) and electrometer were used to characterize the structure and properties of the obtained composites. It was found that the BaTiO3 particles in the size of 100 nm were dispersed homogeneously in the polyimide matrix without aggregation. Thermal stability of the composites could be improved with the incorporation of BaTiO3. The dielectric constant (epsilon) and the dielectric loss (tan 5) of these composites increased with the increase of the volume fraction of BaTiO3 particles. epsilon tan delta was 35 and 0.0082, respectively at 10 kHz as the composite contains 50 vol% BaTiO3. Also, the dielectric properties of the composites displayed good stability within a wide range of temperature or frequency. (c) 2005 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available