聚氨酯/苯并噁嗪互穿聚合物网络的阻尼性能  

Studies on Polyurethane/Benzoxazine Resin Interpenetrating Polymer Networks Damping Properties

作　　者：陈晔[1] 刘允航[1] 田国华[1] 王新灵[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《上海交通大学学报》2002年第10期1506-1508,共3页Journal of Shanghai Jiaotong University

摘　　要：采用二步法 ,以部分交联的聚氨酯 ( PU)为聚合物 ,双酚 A型苯并嗪 ( BA)为聚合物 合成聚氨酯 /苯并嗪互穿聚合物网络 ( PU/BA IPN) ,并应用动态机械热力学分析对产物的阻尼性能进行了研究 .结果表明 ,PU/BA IPN在 PU∶ BA为 1 .5∶ 1时具有最佳的宽温域的阻尼性能 .低的 PU交联度有利于阻尼性能 ;适当地延长固化时间可提高体系的阻尼值 。A series of Polyurethane/Benzoxazine resin Interpenetrating Polymer Networks (PU/BA IPN) were prepared by sequential polymerization, in which PU is in the structure as network I and BA as network Ⅱ.The damping properties of the PU/BA IPN samples were studied by DMTA. The results show that the PU/BA IPN has the best damping properties in broad temperature range at PU∶BA=1.5∶1.Crosslink of PU makes the damping value decrease. The increasing of curing time increases the damping value, but narrows the damping temperature range.

关 键 词：阻尼性能 聚氨酯 苯并恶嗪 互穿聚合物网络 阻尼温度 二步法 交联度 

分 类 号：O633.2[理学—高分子化学] O633.5[理学—化学]