The content of nano-MgO had a major effect on the iso-thermal crystallization of nano-MgO/PET composites and (1.0 wt %) of MgO was considered as an optimum at (125 .

• 研究结果表明:纳米成核剂均能明显提高PET的结晶速率；而纳米氧化镁比纳米氧化硅对促进PET的结晶效果更好;添加不同含量的纳米氧化镁对PET在不同温度下的等温结晶影响不同；在所研究的范围内；1.；0%25的添加量较有利于PET的结晶。