Abstract: The non-isothermal crystallization behavior of poly（ethylene terephthalate）was investigated by differential scanning calorimetry （DSC）, using Fe2O3-coated mica was used as a nucleating agent. Jeziorny and Mo methods were used to analyze the non-isothermal crystallization process of neat PET and composite of PET/Fe2O3-coated mica, and the activation energies of the systems were calculated by Flynn-Wall-Ozawa method. The results showed that the Fe2O3-coated mica acted as an efficient nucleating agent, and the crystallization rate of PET was obviously increased. Mo method appropriately described the non-isothermal crystallization of PET and the PET/ Fe2O3-coated mica composite. The incorporation of Fe2O3-coated mica particle did not obviously change the nucleation and crystal growth mechanism of PET，and simply decreased the crystallization activation energy of PET.

Key words: poly（ethylene terephthalate）, iron oxide coated mica, non-isothermal crystallization kinetics, activation energy