低环状三聚体含量的PET制备方法研究进展

Research Progress on Preparation Methods of PET with Low Cyclic Trimer Content

聚对苯二甲酸乙二酯(PET)作为综合性能优良的聚合物,被人们用于制备合成纤维、包装瓶、包装材料、薄膜、胶片以及工程塑料等领域。但是PET产物中的杂质环状三聚体的存在对PET的品质具有不利影响,从降低环状三聚体含量的角度来获得高品质的PET是目前公认可行的一个途径。本文对现有的各类降低环状三聚体含量的方法进行了综述。

Polyethylene terephthalate(PET) is used as a polymer with excellent comprehensive performance and is used by people in the fields of preparing synthetic fibers, packaging bottles, packaging materials, films, engineering plastics and the like. However, the presence of the impurity cyclic trimer in PET product has a detrimental effect on the quality of PET, and obtaining high quality PET from the standpoint of reducing the content of cyclic trimer is currently recognized as a viable route. Various prior art methods for reducing the cyclic trimer content were reviewed herein.