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Composition dependence of dielectric properties, elastic modulus, and electroactivity in (carbon black‐BaTiO 3 )/silicone rubber nanocomposites
Author(s) -
Zhao Hang,
Xia YuJuan,
Dang ZhiMin,
Zha JunWei,
Hu GuoHua
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38044
Subject(s) - materials science , composite material , carbon black , nanocomposite , dielectric , silicone rubber , permittivity , natural rubber , elastomer , modulus , dielectric loss , optoelectronics
The dielectric properties, elastic modulus, and electromechanical responses of dielectric elastomers (DEs) consisting of silicone rubber and carbon black (CB) incorporated with BaTiO 3 (BT) were studied. When compared with single filler/rubber composites, the resulting three‐component nanocomposites yielded very abnormal phenomena. They might be attributed to the interactions between the two kinds of fillers. The increase in concentration of CB (BT) would play a destructive role to the network structure formed by BT (CB) particles. The maximum electromechanical strain of the nanocomposites achieved at mass fraction m CB = 0.03 and m BT = 0.06. The resultant electromechanical strain would be attributed to the large dielectric permittivity in the three‐component nanocomposites, in which the BT particles themselves have a high dielectric permittivity and the electrical networks of CB particles have a contribution on the increase in dielectric permittivity of the three‐component nanocomposites. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013