CJCU

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (3): 461.

• Articles • Previous Articles     Next Articles

Dynamic Mechanical Properties of Epoxy Resins/Poly(Ethylene Oxide) Blends Cured with Phthalic Anhydride and Aromatic Amine

ZHENG Si-Xun1, LUO Xiao-Lie1, MA De-Zhu1, LIU Rui-Lin2, LI Jian3   

  1. 1. Dept. of Mater. Sci. and Eng., Univ. of Science and Technology of China, Hefei, 230026;
    2. Henan Institute of Chemistry, Zhengzhou;
    3. Open Lab. of Internal Friction and Defect in Solids,Academia Sinica, Hefei
  • Received:1993-04-05 Revised:1993-07-24 Online:1994-03-24 Published:1994-03-24

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Abstract: Dynamic mechanical properties fo epoxy resins(EP)/poly(ethylene oxide) blends cured with phthalic anhydride(PA) and 4,4'-diaminodiphenylmethane(DDM)were studied.The experimental results indicated that all the blends, with various blend composition and content of curing agents, are miscible at amorphous state,i.e.all the dynamic mechanical spectra showed one single Tg, regularly between two Tgs of constituents.The mechanism of the low temperature relaxation(β relaxation)is different because there are different crosslinking networks of chemical structure between the aromatic amine-cured and the phthalic anhydride-cured products, Therefore, the reliance on the crosslinking density and blend composition is also different.

Key words: Epoxy resins/poly(ethylene oxide)blends, Dynamic mechanical properties, αRelaxation, βRelaxation, Miscibility

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