The composite of glass fiber reinforced PET (FRPET)/Ultra-fine CaCO3 modified by La3+ (UCa-CO3-La3 + ) was prepared by twin screw extrusion.

• 采用双螺杆挤出制备了玻璃纤维增强PET(FRPET)/稀土镧化合物改性超细碳酸钙(UCaC03一La3’)复合材料,将UCaCO3-La3+对FRPET性能的影响与有机钠盐类成核剂NA做了对比。