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Rheological and electrical properties of carbon black‐based poly(vinylidene fluoride) composites
Author(s) -
Wang Jianghong,
Wu Defeng,
Li Xiang,
Zhang Ming
Publication year - 2013
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.23519
Subject(s) - carbon black , materials science , rheology , composite material , viscoelasticity , percolation (cognitive psychology) , compounding , percolation threshold , dielectric , electrical resistivity and conductivity , natural rubber , optoelectronics , engineering , neuroscience , electrical engineering , biology
Carbon black (CB)–filled poly(vinylidene fluoride) composites (PCB p ) were prepared by melt compounding. The linear rheology was then studied in detail. The composites show typical solid‐like response in the low‐frequency region, which is attributed to the percolation of CB particles. However, the transient percolated CB network is temperature dependent during the small amplitude oscillatory shear flow. Therefore, the principle of time–temperature superposition is invalid on the dynamic rheological responses of those percolated PCB p . A two‐phase viscoelastic model was then used to further describe the linear responses of PCB p to relate hierarchical structures of CB particles to flow responses of composites. In addition, the electrical and dielectric properties of PCB p were also investigated, aiming at further exploring the percolation behavior of CB. POLYM. ENG. SCI., 53:2541–2548, 2013. © 2013 Society of Plastics Engineers