Rheological behavior of semi‐aromatic transparent polyamide | Zendy

Chen Jinzhou | Zendy; Qu Liangjun | Zendy; Li Xinfa | Zendy; Jiang Aiyun | Zendy; Niu Mingjun | Zendy; Wang Jingwu | Zendy

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Rheological behavior of semi‐aromatic transparent polyamide

Author(s) -

Chen Jinzhou,

Qu Liangjun,

Li Xinfa,

Jiang Aiyun,

Niu Mingjun,

Wang Jingwu

Publication year - 2005

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.21607

Subject(s) - activation energy , shear rate , rheology , materials science , rheometer , shear thinning , viscosity , composite material , polyamide , capillary action , shear stress , shear (geology) , apparent viscosity , newtonian fluid , thermodynamics , polymer chemistry , chemistry , organic chemistry , physics

The rheological behaviors of semi‐aromatic transparent polyamide (SATPA) melt are investigated using a capillary rheometer. The effects of shear rate, shear stress, and temperature on the apparent viscosity η a of SATPA are discussed. A correlation of non‐Newtonian index with temperature is obtained. The results show the shear thinning of SATPA; meanwhile η a decreases with increasing temperature and shear rate, and the viscous flow activation energy is further obtained from temperature dependence of the samples. It was concluded that the apparent viscosity η a is sensitive to temperature at lower shear rate owing to the higher viscous flow activation energy; on the contrary, the influence of temperature effect on the apparent viscosity becomes minor at higher shear rate due to the lower viscous flow activation energy. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1586–1589, 2005

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