聚酰胺6/热塑性聚氨酯共混物的流变性能  

Rheological Behavior of PA6/TPU Blends

作　　者：李新法[1] 马晓峰[1] 马丽[1] 赵磊[1] 蒋爱云[1] 牛明军[1] 刘培义[1] 陈金周[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450052

出　　处：《中国塑料》2007年第11期57-59,共3页China Plastics

摘　　要：采用毛细管流变仪测试了聚酰胺6/热塑性聚氨酯(PA6/TPU)共混物的表观黏度、非牛顿指数等流变参数,讨论了剪切速率和温度对熔体表观黏度、剪切应力的影响。结果表明,PA6 和 PA6/TPU 共混物的表观黏度随着温度和剪切速率的增大而减小,非牛顿指数均小于1,符合假塑性流体的流动规律;PA6/TPU 共混物的表观黏度比PA6 的高,而其非牛顿指数比 PA6 的小,说明共混物的非牛顿性增强。在温度为230～250℃、剪切速率为100～1200s^(-1)时,共混物的表观黏度为100～900 Pa·S,共混物适合挤出成型和注射成型。The rheological behavior of polyamide 6/thermoplastic polyurethane （PA6/TPU） blends was studied. The results showed that the apparent viscosity of PA6 and PA6/TPU blends decreased with increasing of the temperature and share rate, Non-Newtonian index is less than 1, which corresponds to pseudoplastic flow characteristics. The apparent viscosity of PA6/TPU blends is higher, non-Newtonlan index is lower than that of PA6, respectively. In temperature range between 230 ℃ and 250 ℃, shear rate range between 100 s^- 1 and 1 200 s^- 1, the apparent viscosities of the blends were between 100 Pa＇s and 900 Pa＇ s, which confirms that the blends are suitable for extrusion and injection molding.

关 键 词：聚酰胺6 热塑性聚氨酯 流变性能 共混物 

分 类 号：TQ320[化学工程—合成树脂塑料工业]