Title :
Study of electrorheological behavior in smart composites of polyacene quinone radical polymer dispersed in silicone oil
Author :
Yong, Far ; Wei, Zheng ; Linjian, Zhen ; Xiaoqin, Zhang ; Yanhe, He ; Qinguan, Lei
Author_Institution :
Dept. of Electr. Mater. Eng., Harbin Univ. of Sci. & Technol., China
Abstract :
By virtue of studying the change of torque (or shear stress) in smart composites of two polyacene quinone radical (PAQR) polymers dispersed in silicone oil with some important factors, such as, shear rate, temperature, and applied stress, we have observed that there is a correlation in the change trend between both the current-voltage and stress-voltage curves, expressed by power function. It is worthy of note that the power index in some cases is about 3, higher markedly than the 2 expected from conversant models. A maximum exists at about 120 °C in the diagram of shear stress versus temperature; the conductivity and dielectric permittivity, or type of PAQR were a significant influence on the ER behaviour. Here, we give a tentative explanation for these phenomena
Keywords :
composite materials; disperse systems; electrical conductivity; electrorheology; intelligent materials; organic semiconductors; permittivity; polymer blends; silicones; torque; 120 degC; applied stress; conductivity; current-voltage curves; dielectric permittivity; electrorheological behavior; intrinsic semiconducting PAQR particles; polyacene quinone radical polymer; power function; power index; shear rate; shear stress; silicone oil; smart composites; stress-voltage curves; temperature; torque; Conductivity; Dielectrics; Electrodes; Erbium; Force measurement; Petroleum; Polymers; Stress; Temperature; Voltage;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617531
