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Multifunctional Properties of Cyanate Ester Composites with SiO2 Coated Fe3O4 Fillers
W. X. Sun; W. Z. Sun; M. R. Kessler; N. Bowler; K. W. Dennis; R. W. McCallum; Q. Li; X. L. Tan
2013
Source PublicationAcs Applied Materials & Interfaces
ISSN1944-8244
Volume5Issue:5Pages:1636-1642
AbstractSiO2 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 degrees 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.
description.department[sun, weixing ; kessler, michael r. ; bowler, nicola ; tan, xiaoli] iowa state univ, dept mat sci & engn, ames, ia 50011 usa. [sun, wuzhu ; li, qi] chinese acad sci, inst met res, shenyang 110016, peoples r china. [dennis, kevin w. ; mccallum, r. william] us doe, div mat sci & engn, ames lab, ames, ia 50011 usa. ; li, q (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; qili@imr.ac.cn ; xtan@iastate.edu
KeywordSio2 Coated Fe3o4 Submicrometer Spheres Polymer-matrix Composites Dielectric Properties Mechanical Stiffening Superparamagnetic Behavior Dynamic-mechanical Analysis Dielectric-properties Ester/alumina Nanocomposites Magnetite Nanoparticles Polymer Composites Silica Oxide
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71483
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
W. X. Sun,W. Z. Sun,M. R. Kessler,et al. Multifunctional Properties of Cyanate Ester Composites with SiO2 Coated Fe3O4 Fillers[J]. Acs Applied Materials & Interfaces,2013,5(5):1636-1642.
APA W. X. Sun.,W. Z. Sun.,M. R. Kessler.,N. Bowler.,K. W. Dennis.,...&X. L. Tan.(2013).Multifunctional Properties of Cyanate Ester Composites with SiO2 Coated Fe3O4 Fillers.Acs Applied Materials & Interfaces,5(5),1636-1642.
MLA W. X. Sun,et al."Multifunctional Properties of Cyanate Ester Composites with SiO2 Coated Fe3O4 Fillers".Acs Applied Materials & Interfaces 5.5(2013):1636-1642.
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