PET综合性能良好，应用广泛，但难以生物降解，随着排入自然界的废旧PET日益增多，对其进行回收利用已迫在眉睫。回收方法包括物理方法、化学方法、物理化学方法等，其中，化学回收方法将PET解聚成单体或低聚体，是实现废旧 PET 循环利用最有前途的途径之一，包括醇解法、水解法等。本文重点对废旧PET的化学回收方法研究现状及新进展进行了综述，旨在为PET的工业回收利用提供参考。
The chemical methods of recycling post PET,such as alcoholysis,aminolysis,hydrolysis and pyrolysis, etc. ,were reviewed in this article. By using these chemical methods,post PET can depolymerize into monomers or oligomers,which may act as raw materials for preparation unsaturated polyester resin,polyurethane,etc. . The main goal of this work is to provide reference for comprehensive utilization of post PET.
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