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The effect of ceria nanoparticles on improving heat resistant properties of fluorosilicone rubber.
- Source :
- Journal of Applied Polymer Science; 11/10/2016, Vol. 133 Issue 42, pn/a-N.PAG, 8p
- Publication Year :
- 2016
-
Abstract
- ABSTRACT 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<subscript>2</subscript>) and nanoparticle ceria (N-CeO<subscript>2</subscript>) 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<subscript>2</subscript> and N-CeO<subscript>2</subscript> 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<subscript>2</subscript> 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218995
- Volume :
- 133
- Issue :
- 42
- Database :
- Complementary Index
- Journal :
- Journal of Applied Polymer Science
- Publication Type :
- Academic Journal
- Accession number :
- 117124288
- Full Text :
- https://doi.org/10.1002/app.44117