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Effect of SnO 2 and Sb‐doped SnO 2 on the structure and electrical conductivity of epichlorohydrin rubber
Author(s) -
Liu Huihui,
Li Qiuying,
Wang Lujia,
Mao Yapeng,
Wu Chifei
Publication year - 2016
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.23423
Subject(s) - materials science , epichlorohydrin , electrical resistivity and conductivity , composite material , composite number , scanning electron microscope , conductivity , natural rubber , doping , oxide , temperature coefficient , metallurgy , chemistry , optoelectronics , electrical engineering , engineering
Nanosized Sb‐doped SnO 2 (ATO) particles were successfully synthesized. Electrically conducting rubbery composites based on epichlorohydrin rubber (ECO) and two kinds of conductive fillers (SnO 2 and ATO) were prepared by a conventional blending method. The morphology, structure and electrical conductivity of ECO/SnO 2 and ECO/ATO composites were investigated. Results showed that SnO 2 and ATO had great influence on the structure of ECO composite. Besides, the addition of oxide particles enhanced its electrical conductivity significantly. The electrical conductivity of ECO/ATO composite appeared an obvious threshold value with the variation of the loading amount of ATO fillers, whereas the resistivity of ECO filled with SnO 2 decreased monotonically with the increasing SnO 2 . The temperature dependence of resistivity indicated that the ECO/SnO 2 and ECO/ATO composites exhibited a negative temperature coefficient (NTC) effect. Scanning electron microscopy (SEM) was used to investigate the morphological states of oxide fillers in ECO matrix, and specifically continuous networks were observed. POLYM. COMPOS., 37:2411–2416, 2016. © 2015 Society of Plastics Engineers