Title :
Carbon black-BaTiO3/silicone rubber electroactive nanocomposites with large strain coefficient
Author :
Xia, Yujuan ; Dang, Zhimin ; Zha, Junwei ; Song, Hongtao ; Shi, Changyong ; Bai, Jinbo
Author_Institution :
Key Lab. of Beijing City on Preparation & Process. of Novel Polymer Mater., Beijing Univ. of Chem. Technol., Beijing, China
Abstract :
High driving fields have blocked the development of dielectric elastomers from practical applications. Keeping high dielectric permittivity but low modulus of the elastomers is a prospect way to reduce the driving field. In this letter, carbon black-BaTiO3/liquid-state silicone rubber (CB-BT/RTV) three-component electroactive nanocomposites were fabricated by simple blending method. Results showed that both CB and BT particles were well-dispersed in silicone rubber matrix. Percolation appeared when the volume fraction of CB (fCB) was 0.039(in BT enforced RTV matrix having fBT=0.07). A remarkably increase of strain coefficient K was discovered at this critical point. The three-component electroactuation nanocomposites with large K could reduce the driving field dramatically and have potential applications as artificial muscle and electric actuator.
Keywords :
barium compounds; elastomers; electrostriction; nanocomposites; BaTiO3; dielectric elastomers; dielectric properties; electrostriction; silicone rubber electroactive nanocomposites; silicone rubber matrix; strain coefficient; Capacitive sensors; Chemical technology; Dielectric liquids; Dielectric materials; Muscles; Nanocomposites; Permittivity; Polymers; Protection switching; Rubber; dielectric elastomer; dielectric properties; electrostriction; nanocomposites; strain coefficient;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-4367-3
Electronic_ISBN :
978-1-4244-4368-0
DOI :
10.1109/ICPADM.2009.5252166