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《China Synthetic Fiber Industry》 2006-05
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Rheological study on polyamic acid solution

Guo Lihong, Cheng Ru, Huang Pei (College of Chemical Engineering, Nanjing University of Technology, Nanjing 210009)  
The rheological behavior of polyamic acid solution and the influential factors on its viscosity were studied with a cone-plate rheometer. The results showed that the polyamic acid solution belonged to now-Newtonian pseudoplastic fluid and had the characteristics of rheopectical fluid. The viscosity of polyamic acid solution was decreased while raising shearing rate, increased while increasing solution concentration, decreased while elevating temperature and prolonging storage time. The polyamic acid solution had the flow activation energy 20. 83 kJ/mol at the mass fraction of 15%.
【CateGory Index】: TQ320.1
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