摘要
利用毛细管流变仪对不同水分聚酯熔体的流变性能进行了对比研究,讨论储料装置对干燥后聚酯切片吸水性的影响,以及水分对表观粘度、非牛顿指数及粘流活化能的影响。结果表明:由于发生了水解反应,在相同温度下,聚酯熔体的表观粘度随着水分的增加而降低,非牛顿指数随着水分的增加而增大,粘流活化能随着水分的增加而增大。
The rheological properties of polyester melt with different moisture content were comparatively stud-ied by capillary rheometer,and the influence of charging apparatus on the moisture content of dry polyester chips and the influence of moisture content on the apparent viscosity,non -Newtonian index,and viscous flow activation energy were discussed.The results showed that the apparent viscosity of polyester melt decrease with the increasing of moisture content.At the same temperature,the non-Newtonian index and the viscous flow activation energy of pol-yester melt increased with the increasing of moisture content due to hydrolysis reaction.
出处
《合成技术及应用》
2015年第2期56-60,共5页
Synthetic Technology & Application
关键词
聚酯
水分
水解
流变性能
polyester
moisture content
hydrolysis
rheological properties
