Influence of nanoparticle surface treatment on the electrical properties of cycloaliphatic epoxy nanocomposites

Author

Huang, Xingyi ; Zheng, Yun ; Jiang, Pingkai ; Yin, Yi

Author_Institution

Dept. of Polymer Sci. & Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

17

Issue

2

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

635

Lastpage

643

Abstract

This experimental study reports the influence of the surface treatment of silica nanoparticles on the morphology and electrical properties of epoxy composites. (3-Glycidoxypropyl)methyldiethoxysilane was used as a silane coupling agent for the surface treatment of the silica nanoparticles. It was found that the incorporation of the silane onto the surface of silica nanoparticles not only improved the dispersion of the nanoparticles in epoxy, but also improved the electrical properties as compared with the composites filled with unsurface-treated nanoparticles. The surface treatment makes it possible to increase volume resistivity, dielectric strength, and provides an excellent approach able to reduce the dielectric loss of the nanocomposites. It is concluded that the improved properties could be directly ascribed to the good dispersion and special physicochemical characteristics of the surface-treated nanoparticles in the polymer matrix.

Keywords

dielectric losses; electric strength; electrical resistivity; filled polymers; nanocomposites; nanoparticles; permittivity; surface morphology; surface treatment; (3-Glycidoxypropyl)methyldiethoxysilane; cycloaliphatic epoxy nanocomposites; dielectric constant; dielectric loss; dielectric strength; nanoparticle dispersion; physicochemical characteristics; polymer matrix; silane coupling agent; silica nanoparticle surface treatment; surface morphology; surface-treated silica nanoparticles; Dielectric losses; Dielectric materials; Dielectrics and electrical insulation; Epoxy resins; Nanocomposites; Nanoparticles; Polymers; Silicon compounds; Surface morphology; Surface treatment; Epoxy resin; silica nanoparticles; surface treatment; dielectric constant; dielectric loss tangent; dielectric strength;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2010.5448121

Filename

5448121