W. He, G. X. Liao, X. G. Jian*, X. B. Feng
Department of Polymer Science & Materials,
Dalian 116012, People’s Republic of
In the present work, blends of poly (phthalazinone ether sulfone ketone) (PPESK) /poly(tetrafluoroethylene) (PTFE) with various weight ratios were prepared by solution mixing. The dynamic mechanical properties including the storage modulus(E′), loss modulus(E″) and loss tangent were studied over a wide range of temperature and frequencies and compared for PPESK and its blends. The results show that novel PPESK possesses high storage modulus within a high temperature range and shows good thermal stability. The peaks representing the loss modulus and tan δ of blends shifted to higher temperatures with increasing scanning frequency. The glass transition temperature (Tg) of PPESK/PTFE was not enhanced when the content of PTFE in blends was more than 10wt %. The Arrhenius relationship has been used to calculate the activation energy of the glass transition of PPESK and its blends.
Keywords: Poly(phthalazinone ether sulfone ketone); PTFE; Dynamic mechanical thermal behaviour; Blends; Modulus
* Corresponding author: E-mail: xgjian@chem.dlut.edu.cn, Fax: +86-411-83653426. Tel:+86-411-88993860