期刊
RARE METALS
卷 40, 期 9, 页码 2627-2632出版社
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-018-1186-8
关键词
Dielectric elastomer; Electro-deformation; Phase morphology; Modulus control
This paper focuses on finding a balance between the strong electric driving force and hard matrix provided by high phase content of inorganic dielectric fillings, in order to enhance the electro-deformation of dielectric elastomers. The theoretical calculation and experimental investigation were based on calcium copper titanate (CCTO)/poly(dimethyl siloxane) (PDMS), showing that smaller CCTO particles result in larger dielectric parameters and can lead to an elastomer composite with a lower modulus.
The high phase content of inorganic dielectric fillings will give a strong electric driving force and hard matrix. That is a contradiction in enhancing the electro-deformation of dielectric elastomers (DEs). Therefore, in this paper, by focusing on how to approach a balance between these and finding an effective way to tune the electric response of the DEs, the theoretical calculation and experimental investigation based on calcium copper titanate (CCTO)/poly(dimethyl siloxane) (PDMS) were carried out. It is found that CCTO with a smaller particle size shows a larger dielectric parameter. With smaller CCTO particle as the fillings, the fabricated elastomer composite would approach to a low modulus by a proper CCTO phase morphology in the matrix.
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