Writer: Wei Wu, Tao Wang, Yuhua Zhong, Hui Jiang.

Publication: Engineering Plastics Application, 2012,40 (8)：10-14

Abstract: With PET-PEN random copolyester as compatibilizer, PET/PEN blends with different PET-PEN copolyester content were prepared by means of twin-screw extruder. The compatibility and other properties of the blends were investigated by DSC, TG, heat distortion temperature test and mechanical test etc..The results showed that PET-PEN copolyester had significant compatibilizing effect on PET/PEN blends and could improve the thermal stability of the blends effectively. The higher PET-PEN copolyester content was ，the more thermal stability of PET/PEN blends was improved．The starting temperature of weight loss increased by 20.3℃when PET-PEN copolyester content was 15phr．The vicat softening temperature ，tensile and bending properties，impact toughness of PET/PEN blends were improved by PET-PEN copolyester. The comprehensive properties of the blends were best when PET-PEN copolyester content was 5phr