发泡体系对TPU注射发泡成型的影响  

Effect of Foaming System on Foam Injection Molding of TPU

作　　者：杨昊运 何继敏[1] 王国俨 井金兵 贠鹏 YANG Hao-yun;HE Ji-min;WANG Guo-yan;JING Jin-bing;YUN Peng(Institute of Plastic Machinery and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学塑料机械及塑料工程研究所,北京100029

出　　处：《塑料工业》2020年第8期127-130,共4页China Plastics Industry

摘　　要：以纳米黏土为成核剂,偶氮二甲酰胺(AC)为化学发泡剂,对热塑性聚氨酯弹性体(TPU)进行注射发泡成型。研究了发泡体系中不同成核剂含量、不同发泡剂含量对TPU发泡制品的泡孔形态结构及力学性能的影响。结果表明,纳米黏土的添加有利于提高TPU注射发泡试样的发泡效果和回弹性能。当纳米黏土和AC发泡剂的质量分数分别为0.6%和3%时,可得到最佳的发泡效果和回弹性能。Taking nano-clay as nucleating agent and azobisformamide(AC)as chemical foaming agent,thermoplastic polyurethane elastomer(TPU)was injection foamed.The effects of different nucleating agent contents and different foaming agent contents on the cell morphology and mechanical properties of TPU foamed products were studied.The results show that the addition of nano-clay is beneficial to improve the foaming effect and resilience performance of TPU injection foam samples.The best foaming effect and resilience performance can be obtained,when the content of nano-clay and AC foaming agent is 0.6%and 3%,respectively.

关 键 词：热塑性聚氨酯 纳米黏土 注射发泡 

分 类 号：TQ334[化学工程—橡胶工业]