反应挤出过程中回收PET扩链反应的研究  

Study on Extending Chain Reaction of R-PET in Reactive Extruded Processing

作　　者：吕云伟[1] 李斌[1] 丁岚曦[1] 莫敬源[1] 刘忠仁[1] 

机构地区：[1]四川大学高分子科学与工程学院,成都四川610065

出　　处：《现代塑料加工应用》2009年第2期17-19,共3页Modern Plastics Processing and Applications

摘　　要：选用羧羟基加成型扩链剂亚磷酸三苯酯(TPP),并以抗氧剂1010和环氧树脂为稳定剂,考察了反应挤出后回收PET(R-PET)的特性黏数、羧基含量(CV)的变化以及对扩链反应后期不稳定性的改善。结果表明,TPP能较大程度地提高R-PET的特性黏数,而环氧树脂可以改善扩链反应后期的不稳定性。R-PET在哈克流变仪上进行反应,反应条件为:TPP和环氧树脂质量分数分别为1%和0.20%时,转子转速为40 r/min,反应温度为260℃。Triphenyl phosphite （TPP） ylene terephthalate） （R-PET）, epoxy resin was used as chain extenders of recycled poly（ethand heat-oxygen stabilizer 1010 as the stabilizer. The changes of the inherent viscosity ,the content of carboxyl value（CV） of R-PET and improvement of the instability of the late extending chain reaction were studied. The results show that TPP can increase the inherent viscosity of R-PET to a great extent, and epoxy resin can improve the instability of the late extending chain reaction. The R-PET products can be obtained at the reactive conditions as follows： the temperature at 260℃ in the Haake rheometer, the screw rotation speed is 40 r/min, the mass fractions of TPP and epoxy resin are 1 % and 0.20 % respectively.

关 键 词：回收聚对苯二甲酸乙二醇酯 亚磷酸三苯酯 扩链反应 反应挤出 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]