Abstract: Blends of inorganic nano zirconium dioxide(ZrO₂^-) and poly(ether-sulfone)(PES) were prepared by mechanical blending. Their mechanical, thermal and electrical properties were investigated. Compared with pure PES, this kind of organic/inorganic nano-composite exhibit a better electrical property, lower coefficients of thermal expansion, as well as a similar thermal properties. The mechanical properties are composition-dependent.

Key words: Poly(ether-sulfone)(PES), Coefficients of thermal expansion(CTE), Nano zirconium dioxide(ZrO₂^-)