Thermal degradation of natural rubber/ZNO nanocomposites
conference contribution
posted on 2008-01-01, 00:00authored byPuwang Li, M Lu, M Huang, Zheng Peng, Lingxue KongLingxue Kong
Nanoparticies have been widely used to enhance the properties of natural rubber (NR). In the present paper a novel nanocomposite was developed by blending nano-ZnO slurry with prevulcanized NR latex, and the thermal degradation process of pure NR and NR/ZnO nanocomposites with different nano-ZnO loading was studied with a Perkin Elemer TGA-7 thermogravimetric analyzer. The thermal degradation parameters of NR/ZnO (2 parts ZnO per hundred dlY rubber) at different heating rates (Bs) were studied. The results show that the thermal degradation of pure NR and NR/ZnO nanocomposites in nitrogen is a one-step reaction. The degradation temperatures of NR/ZnO nanocomposite increase with an increasing B. The peak height (Rp) on the differential thermogravimetric curve increases with the increase of B. The degradation rates are not affected significantly by B, and the average values of thermal degradation rate Cp and Cf are 44.42 % and 81.04 %, respectively. The thermal degradation kinetic parameters are calculated with Ozawa-Flynn-Wall method. The activation energy (E) and the frequency factor (A) vary with ecomposition degree, and can be divided into three phases corresponding to the volatilization of low-molecular-weight materials, the thermal degradation ofNR main chains and the decomposition of residual carbon.
History
Event
Asia-Pacific Conference on Materials Processing (8th : 2008 : Guilin, China, and Guangzhou, China)
Pagination
996 - 1001
Publisher
Frontiers of Design and Manufacturing
Location
Guilin-Guangzhou, China
Place of publication
Riverwood, N.S.W.
Start date
2008-06-15
End date
2008-06-20
ISBN-13
9780958069298
Language
eng
Publication classification
E1 Full written paper - refereed
Copyright notice
2008, APCMP
Editor/Contributor(s)
C Wang, X Li, J Wang
Title of proceedings
APCMP 2008 : Proceedings of the 8th Asia-Pacific conference on materials processing