J Polym Sci Part B Polym Phys 49:1421–1429 Wang Q, Zhu L (2011) Polymer nanocomposites for electrical energy storage. Wang Z, Wang T, Fang M, Wang C, Xiao Y, Pu Y (2017) Enhancement of dielectric and electrical properties in BFN/Ni/PVDF three-phase composites. Yang Y, Sun H, Yin D et al (2015) High performance of polyimide/CaCu 3Ti 4O hybrid films with enhanced dielectric permittivity and low dielectric loss. Moreover, introducing ultra-small Ag nanoparticles had effectively decreased the dielectric loss and conductivity of composites due to its coulomb blockade and quantum trapped carrier structure effects, which resulted in the improvement of energy storage characteristics of composite.Īzizi A, Gadinski MR, Li Q et al (2017) High-performance polymers sandwiched with chemical vapor deposited hexagonal boron nitrides as scalable high-temperature dielectric materials. Theoretical analysis shows that the PDA shell not only promoted the uniform dispersion of Gns in TPU matrix, but also enhanced the interface bonding between the nanoplatelets and the TPU matrix. Under low-frequency test conditions, the dielectric constant of the (4 wt%) nanocomposite was 117.81, which was about 14 times higher than that of pure TPU. Moreover, the addition of core–shell nanoplatelets could effectively improve the dielectric constant of the composite.
Results indicated that the core–shell nanoplatelets were evenly dispersed in TPU matrix. The microstructure and dielectric performances were tested. This obtained core–shell nanoplatelets were filled into TPU to prepare a flexible dielectric material.
Dopamine was oxidatively polymerized to form a polydopamine (PDA) layer on the surface of graphene nanosheets (Gns), and then Ag nanoparticles were chemically reduced by silver nitrate and uniformly embedded on the surface of PDA. A new type of core–shell nanoplatelets was developed to improve the dielectric properties of thermoplastic polyurethane (TPU) nanocomposites.
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