凯发

Speaker-Ning Nanying

Ning Nanying
Beijing University of Chemical Technology, China
Ning Nanying received her B. S. from Sichuan University in 2005 and her Ph.D. from College of Polymer Science and Engineering, Sichuan University in June, 2010. After working as a post-doc at College of Light Industry, Textile and Food Engineering, Sichuan University for 2 years, she joined Beijing University of Chemical Technology, College of Materials Science and Engineering in July, 2012 as an associate professor. Her research interests center on the Microstructure and formation mechanism of Dynamic vulcanized thermoplastic elastomer, Interfacial properties and viscoelasticity of elastomer nanocomposites, Microstructure and properties of conductive elastomer and dielectric elastomers. As the first or the corresponding author, she has published more than 30 papers in Prog.Polym.Sci, JMCA, Macromolecules, Soft Matter, Polymer and so on. She has received the National Hundred Excellent Doctoral Thesis Nomination award.
Title：Improving the electromechanical performance of graphene based dielectric elastomers by using some new methods
SymposiumB19 Rubber Composites
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Abstract

Dielectric elastomers (DEs) can give rise to surprisingly large deformations by applying an electric field. 1-3 Because of the lightweight, large strain, and high energy density etc., DEs find many applications in industry such as artificial muscles and sensors. Among various DEs, graphene based DEs have attracted much attention because of its high dielectric constant (k) and unique layered structure. In this study, some new methods were used to improve the electromechanical performance of graphene based DEs. First, we prepared thermoplastic polyurethane (TPU) DE with high k and low dielectric loss by disrupting hydrogen bonding between TPU chains and in-situ thermal reduction of graphene oxide nanosheets (GONS). Second, we prepared GONS-encapsulated carbon nanosphere (GO@CNS) hybrid/XNBR dielectric composite with high k, low dielectric loss and large actuated strain at a low electric filed by latex compounding. Third, we prepared poly (dopamine) encapsulated GONS/elastomer composites with low dielectric loss and improved breakdown strength and actuated strain at a low electric field. The improvement in the electromechanical performance of graphene based DEs facilitates the wider application of DEs.

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Abstract: Minyang Lu

Sponsor: Wenyang Yang

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