关键词: 拉伸粘度, Trouton粘度, 稳态纯剪切流动, 稳态纯拉伸流动, 拉伸与剪切共存的复合流动

Abstract: Extensional viscosity is also known as Trouton viscosity. This paper briefly describes the extensional viscosity of hundred year’s history study, cites several measurement methods and principles and analyzes the changes of the Trouton viscosity measured in different ways.

Key words: extensional viscosity, Ttrouton viscosity, pure steady shear flow, extensional flow, complex flow including shear and extension