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The effect of ceria nanoparticles on improving heat resistant properties of fluorosilicone rubber
Author(s) -
Xu Xiang,
Liu Junjie,
Chen Pei,
Wei Dafu,
Guan Yong,
Lu Xiaojuan,
Xiao Huining
Publication year - 2016
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.44117
Subject(s) - materials science , diffractometer , thermal stability , scanning electron microscope , natural rubber , ultimate tensile strength , transmission electron microscopy , nanoparticle , thermogravimetric analysis , isothermal process , elongation , composite material , polymer chemistry , chemical engineering , nanotechnology , engineering , physics , thermodynamics
The thermal aging behavior of poly(3,3,3‐trifluoropropyl)methylsiloxane was investigated by thermal gravimetric analysis and isothermal aging tests, and the results indicated the degradation mechanism II, oxidation scission of the side groups, played a more important role when the temperature was below 350 °C. The addition of ceria had significantly improved the thermal stability of fluorosilicone rubber (FSR) by inhibiting the oxidation scission. Moreover, two types of ceria including laminar‐structure ceria (LS‐CeO 2 ) and nanoparticle ceria (N‐CeO 2 ) were prepared and surface was modified by KH570 and characterized by scanning electron microscopy, transmission electron microscope, and X‐ray diffractometer. FSR incorporated with modified LS‐CeO 2 and N‐CeO 2 revealed a significant improvement on the heat resistant properties. In particular, after having been thermal oxidative aged for 70 h at 250 °C, FSR containing 2 wt % of modified N‐CeO 2 maintained 72.6% of tensile strength and 63.9% of elongation at break, respectively, while FSR without ceria completely failed. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44117.