开环式聚降冰片烯共混黏弹性阻尼材料的动态阻尼力学热分析  

Dynamic Damping Mechanical Analysis of Viscoelastic Damping Material Mixed Norsorex by Ring-Opening Metathesis Polymerization

作　　者：许俊红[1] 李爱群[1] 苏毅[2] 庄继忠 黄国元 骆春燕 

机构地区：[1]东南大学土木工程学院,江苏南京210096 [2]南京林业大学土木工程学院,江苏南京210037 [3]常州兰锦橡塑有限公司,江苏常州213000

出　　处：《高分子材料科学与工程》2015年第7期51-57,共7页Polymer Materials Science & Engineering

基　　金：国家科技支撑计划课题(2006BAJ03A04);国家自然科学基金资助项目(51278104)

摘　　要：采用开环式聚降冰片烯（NSX）,分别制备了聚降冰片烯-丁腈橡胶（NBR）混合物和聚降冰片烯-松焦油-丁腈橡胶混合物,通过动态力学测试手段重点分析了聚降冰片烯对丁腈橡胶和松焦油-丁腈橡胶共混物的动态阻尼力学特性的影响。研究发现,在特定频率（1.5Hz）和一定温度范围之内（-20-50℃）,聚降冰片烯会使NBR的阻尼性能得到大幅提升,随着聚降冰片烯掺入量的持续增加,阻尼性能随之减小,呈抛物线型增减趋势;松焦油的添加限制了聚降冰片烯对丁腈橡胶的改性功能。所有工况下的Tg值都得到了向高温移动的效果,扩大了材料在建筑结构的应用空间,某些工况会提高共混物的损耗因子峰值,但效果有限。对此次试验的丁腈橡胶来讲,m（NBR）/m（NSX）（70/30）为最佳组分比。Two organic hybrid systems respectively consisting of NBR-norsorex（NBR-NSX）and NBR-NSXA2 oil were prepared as new types of damping material.From DMTA measurements,their dynamic damping mechanical properties were analyzed.The results show that,the damping properties increase with the mixed of appropriate norsorex at special frequency of 1.5Hz and in certain temperature range（-20~50 ℃）.But as the amount of norsorex continues to increase,the damping properties decrease.As showed the tendency of parabola fluctuation,A2 oil limits the modification functions of norsorex.The Tgof all the conditions moves to higher temperature,which expands the application range in structural engineering.After comprehensive consideration,m（NBR）/m（NSX）（70/30）is the best composition.

关 键 词：聚降冰片烯 丁腈橡胶 松焦油 动态力学热分析 损耗因子 剪切储能模量 剪切损耗模量 

分 类 号：TQ333.7[化学工程—橡胶工业]