中国塑料2025，Vol.39Issue(1)：92-96,5.DOI:10.19491/j.issn.1001-9278.2025.01.015
废弃聚异氰脲酸酯泡沫塑料的降解回收及再生利用
Degradation and recycling of waste polyisocyanurate foams
摘要
Abstract
Two component alcoholysis agents,ethylene glycol(EG)and diethylene glycol(DEG),were used to degrade the waste polyisocyanurate foams(PIR)to obtain polyol as the degradation product.The regenerated PIR foams were obtained through foaming the degradation product.The infrared spectrum and viscosity of the degradation product were and analyzed.The apparent density,compression strength,thermal conductivity and thermal stability of the regenerated PIR were investigated.The results indicated that the degradation of waste PIR and regeneration of PIR obtained an opti-mal effect at a mass ratio of mEG to mDEG of 1/2 and a NaOH catalyst amount of 1.0 g under the degradation reaction condition at 180 ºC for 1 h and then at 190 ºC for 1 h.In this case,the viscosity of the degradation product was 2 246 mPa∙s.The apparent density of regenerated PIR was 0.044 8 g/cm³,its compressive strength was 0.398 MPa,and its thermal conductivity was 0.025 W/m∙K.All performance parameters can meet a requirement of national standards.关键词
聚异氰脲酸酯泡沫/降解/回收/再利用/醇解剂Key words
polyisocyanurate foam/degradation/recovery/reuse/alcoholysis agent分类
化学化工引用本文复制引用
周天宇,李玖重,张婧帆..废弃聚异氰脲酸酯泡沫塑料的降解回收及再生利用[J].中国塑料,2025,39(1):92-96,5.基金项目
中国石化科技开发项目,废弃保冷材料PIR的循环再生及资源化利用技术开发(CHG22149) （CHG22149）
