Document Type
Article
Publication Date
3-13-2013
Journal or Book Title
ACS Applied Materials & Interfaces
Volume
5
Issue
5
First Page
1636
Last Page
1642
DOI
10.1021/am302520e
Abstract
SiO2 coated Fe3O4 submicrometer spherical particles (a conducting core/insulating shell configuration) are fabricated using a hydrothermal method and are loaded at 10 and 20 vol % into a bisphenol E cyanate ester matrix for synthesis of multifunctional composites. The dielectric constant of the resulting composites is found to be enhanced over a wide frequency and temperature range while the low dielectric loss tangent of the neat cyanate ester polymer is largely preserved up to 160 °C due to the insulating SiO2 coating on individual conductive Fe3O4 submicrometer spheres. These composites also demonstrate high dielectric breakdown strengths at room temperature. Dynamic mechanical analysis indicates that the storage modulus of the composite with a 20 vol % filler loading is twice as high as that of neat resin, but the glass transition temperature considerably decreases with increasing filler content. Magnetic measurements reveal a large saturation magnetization and negligibly low coercivity and remanent magnetization in these composites.
Copyright Owner
American Chemical Society
Copyright Date
2013
Language
en
File Format
application/pdf
Recommended Citation
Sun, Weixing; Sun, Wuzhu; Kessler, Michael R.; Bowler, Nicola; Dennis, Kevin W.; McCallum, R. William; Li, Qi; and Tan, Xiaoli, "Multifunctional Properties of Cyanate Ester Composites with SiO2 Coated Fe3O4 Fillers" (2013). Materials Science and Engineering Publications. 2.
https://lib.dr.iastate.edu/mse_pubs/2
Comments
This article is from ACS Applied Materials & Interfaces 5, no. 5 (2013): 2013, doi:10.1021/am302520e.