If no other differences can be seen between resins, try testing the elongational viscosity. 如果看不出两种树脂间存在别的差别,那就测试一下它们的拉伸黏度。
The resin with the higher elongational viscosity will likely have more problems with buildup due to higher stresses at the die exit. 具有更高拉伸黏度的树脂因为在口模出口处具有高的应力而将可能具有更多的积料问题。
RHEO-TENSION are important instruments which have been applied in the scientific research and manufacture widely, to study properties of elongational flow, breaking strength and elongational viscosity. 拉伸流变仪是研究聚合物熔体的拉伸流动性、拉伸强度以及拉伸粘度的重要设备,在科研及生产领域有广泛的应用。
Experimental Determination of Elongational Viscosity during the Process of Blown Film in Cellulose Solution 纤维素溶液吹膜过程中拉伸黏度的测定