Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (06): 1100-1104.doi: 10.3866/PKU.WHXB20080633

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Thermal Stability of Fluoroelastomer/MEPDM Blends

WANG Ya-Ming; LIU Lan; LUO Yuan-Fang; JIA De-Min   

  1. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
  • Received:2008-01-17 Revised:2008-02-19 Published:2008-06-03
  • Contact: LIU Lan

Abstract: The thermal degradation behaviors of fluoroelastomer and the blends of fluoroelastomer/MEPDM were investigated by thermogravimetry (TG) and derivative thermogravimetry (DTG). The kinetic parameters were evaluated by differential method and integral method. The results showed that the fluoroelastomer/MEPDM blends had higher thermal degradation temperature, but smaller apparent activation energy E than FPM, the E values were 251.74, 244.98, and 219.60 kJ·mol-1 for FPM, FPM/MEPDM(5%), and FPM/MEPDM(10%), respectively. The thermal decomposition reaction order was 0.95 for both FPM and FPM/MEPDM blends. The thermal decomposition apparent activation energy E increased with increasing mass fraction loss α. The TG and DTG results suggested that the FPM/MEPDM blends had excellent thermalstability. The kinetic data indicated that the FPM/MEPDM blends decomposed easily than FPMafter onset degradation temperature.

Key words: Fluoroelastomer, Rubber blends, Thermal stability, Kinetics


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