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32 6 · Nov. 2006
Journal of Southwest University for Nationalities ⋅Natural Science Edition
___________________________________________________________________
1003-2843(2006)06-1223-04
Research on extensional viscosity of
liquid crystalline polymer
FU Qiang
(Southwest University for Nationalities, Chengdu 610041, P.R.C)
Abstract: The relationship between the extensional viscosity and material parameters is studied through the analytical formulas
of stress and extensional viscosity derived from the constitutive equation, boundary conditions and the equation of motion of
co-rotational Oldroyd fluid B model. By using software MATLAB, the differential equations are solved and the curves of
extensional viscosity with other parameters are drawn, and the influence of these parameters on the rheologic behavior is shown.
These results qualitatively agree with the experimental results.
Key words: extensional viscosity; co-rotational Oldroyd fluid B; constitutive equation, liquid crystalline polymer (LCP)
CLC Number: O373 Document Code: A
Liquid crystalline polymer (LCP) has distinctive properties from the combination of high molecular mass and
liquid crystalline phase, which has become a new high performance polymer in recent years[1]. So the study and
development of LCP not only provides a new high performance material and results in the advance of technology
and the generation of new technology, but also promotes the development of molecular engineering, synthesis
chemistry, polymer physics, polym
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