扩链剂对PPG-1000／MDI体系聚氨酯弹性体阻尼性能的影响  

The Effect of Chains Extenders on the Damping Property of PPG/MDI Polyurethane Elastomers

作　　者：陈浩[1] 周海军[2] 刘德居[3] 李彦涛[2] 

机构地区：[1]河北工业大学,天津300130 [2]河北省科学院能源研究所,石家庄050081 [3]河北科技大学,石家庄050018

出　　处：《聚氨酯工业》2012年第4期9-11,共3页Polyurethane Industry

摘　　要：以聚氧化丙烯二醇(PPG-1000)、MDI-50与不同的二醇扩链剂采用二步法合成PPG-1000/MDI体系的聚氨酯(PU)弹性体,并对其阻尼性能进行了测试。结果表明,扩链剂对PPG-1000/MDI体系的聚氨酯弹性体的阻尼性能有明显影响。加入含侧甲基和醚键的扩链剂在不同程度上提高了聚氨酯弹性体的阻尼因子(tanδ),拓宽其阻尼温域。因此选择适宜的扩链剂对调节聚氨酯弹性体的阻尼温域具有一定的意义。PPG-1000/MDI type polyurethane elastomers （PU） based on PPG-1000, MDI-50 and different chain extenders were synthesized by two step method. The damping property was tested. The results of dynamic me-chanical measurement showed that chain extenders affected on PPG-1000/MDI type polyurethane materials damping property. When the chain extenders contained methyl or ether linkage, the polyurethane material had high damping properties （ tan 8） and wided damping zones. So choosing the suitable structure of the chain extender could improve the damping property of polyurethane.

关 键 词：聚氨酯弹性体 扩链剂 阻尼性能 

分 类 号：TQ334.1[化学工程—橡胶工业]