上海交通大学学报

上海交通大学学报（自然版）

• 化学工程 • 上一篇    下一篇

聚氨酯/环氧树脂互穿网络硬泡循环压缩

花兴艳1，赵培仲2，朱金华3，王源升3
  

  1. （1.中国人民解放军91550部队94分队，大连 116023； 2.海军航空工程学院 青岛分院，青岛 266041；3.海军工程大学 理学院， 武汉 430033）
  • 收稿日期:2009-08-31 修回日期:1900-01-01 出版日期:2010-11-30 发布日期:2010-11-30

Cyclic Compression of Rigid PU/ER Interpenetrating Polymer Networks Foams

HUA Xingyan1,ZHAO Peizhong2,ZHU Jinhua3,WANG Yuansheng3
  

  1. (1. Branch 94, The People’s Liberation Army Unit 91550，Dalian 116023, Liaoning, China; 2. Qingdao Branch, Naval Academy of Aeronautical Engineering, Qingdao 266041, Shandong, China; 3. College of Science, Naval University of Engineering, Wuhan 430033, Hubei, China)
  • Received:2009-08-31 Revised:1900-01-01 Online:2010-11-30 Published:2010-11-30

摘要： 制备了聚氨酯(PU)/环氧树脂(ER)互穿聚合物网络硬泡，研究了互穿聚合物网络(IPN)硬泡的化学结构及微观结构形态.傅里叶红外光谱(FTIR)分析表明，IPN硬泡的网络间存在接枝反应.扫描电子显微镜(SEM)分析发现，IPN硬泡泡孔结构形状都比较均一.循环压缩实验研究表明：随循环次数增加，应力下降，单次循环的能量损耗下降；随ER含量增加，IPN硬泡的压缩模量和强度提高，相同应变下应力增加，每次循环耗能增加；循环压缩的加卸载应力应变曲线可用改进的Ogden模型表示；累积能量损耗可用Weibull方程表示.

关键词: 聚氨酯/环氧树脂互穿聚合物网络, 硬泡, 循环压缩, 能量损耗

Abstract: A series of rigid polyurethane (PU)/epoxy resin (ER) IPN foams were prepared. Changes of the chemical structure and morphology of IPN foams were investigated by FTIR spectroscopy and SEM. The FTIR show that there exist some chemical bonds between PU and ER component. The cell shapes of all the IPN foams are almost uniform. The cyclic compression behaviors of the IPN foams were tested. The results indicate that the stress at any given strain and the dissipated energy both decrease with the number of cycles. The stress and dissipated energy both increase with the ER content. The loading and unloading response can be fully described by modified Ogden’s model. The accumulated dissipated energy can be expressed by Weibull equation.

中图分类号: