废旧PET固相增黏回收工艺探索

Exploration on solid phase tackifying recovery process of waste PET

PET材料在透明塑料领域中价格低廉,且综合性能较好,我国每年废旧PET的产生量非常大,由于PET在自然环境中很难降解,为了减少其对环境的影响,迫切需加大废旧PET的循环利用。目前废旧PET回收工艺主要有物理回收和化学回收2种。制约废旧PET循环使用的主要瓶颈是特性黏度太低,因此研究PET回收增黏工艺对提升废旧PET的回收利用,减少其对环境的影响,具有重要意义。

PET materials are cheap in the field of transparent plastics and have good comprehensive properties.The amount of waste PET produced in China is very large every year.Because pet is difficult to degrade in the natural environment,in order to reduce its impact on the environment,it is urgent to increase the recycling of waste PET.At present,there are two kinds of waste PET recycling processes:physical recycling and chemical recycling.The main bottleneck restricting the recycling of waste PET is that the intrinsic viscosity is too low.Therefore,the study of PET recycling and tackifying process is of great significance to improve the recycling of waste PET and reduce its impact on the environment.