微波辅助废旧PET聚酯解聚反应研究  

Microwave-assisted glycolysis of PET waste

作　　者：岳群峰[1] 廖志刚[1] 李桂春[1] 金英学[1] 王天赤[1] 

机构地区：[1]哈尔滨师范大学化学化工学院,黑龙江哈尔滨150025

出　　处：《化学工程师》2011年第5期9-11,共3页Chemical Engineer

基　　金：黑龙江省教育厅科学技术研究项目资助(11541086)

摘　　要：采用微波辅助加热的方式研究了回收PET聚酯的乙二醇解聚反应,并对比了相同催化作用下常规加热条件下的解聚反应,对解聚反应产物BHET进行了熔点测定和FTIR分析。结果显示,两种方法下控制解聚反应至PET聚酯完全转化时单体BHET的收率相差不大,微波辅助条件下单体的收率略高,但是反应时间大大缩短。反应物PET与EG在1∶5(w∶w),微波作用10min的条件下解聚反应单体收率最佳,改变反应条件会影响解聚反应平衡的移动。Glycolysis of polyethylene terephthalate（PET） waste was carried out using different heating source,microwave energy assisted and conventional heating.Comparison of results was made from the yield of BHET and the time taken for depolymerization.It was observed that under identical conditions the yield of BHET was nearly same by different heating.However,the reaction time be shortened greatly with microwave-assisted heating.This has led to substantial saving in energy.The optimal yield of BHET was observed under conditions of PET∶EG ratio is 1∶5 and reaction time is10min with microwave irradiation.

关 键 词：PET聚酯 微波辅助 乙二醇 解聚反应 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]