For energy storage application, free-standing polymer films with high dielectric constant and low dielectric loss play an important role as a high energy density material. Here, we have synthesized and processed tin polyester based metal-containing polymer p(DMTDMG) with organic polyimide p(BTDA-HDA) to make free-standing films as a high energy density dielectric material. From the comparison of dielectric properties of processed hybrid materials with homopolymers i.e. tin containing p(DMTDMG) and organic p(BTDA-HDA), it is found that polymer film processed using 60% loading of p(DMTDMG) and 40% loading of p(BTDA-HDA) have improved dielectric properties than both organic and metal containing homopolymers. This newly processed material gives maximum energy density of 5.9 J/cm<sup>3</sup> which is higher than the commercial standard BOPP polymer. Dielectric properties of the processed polymers were characterized by using time domain dielectric spectroscopy, DC breakdown analysis, and D-E hysteresis loop analysis. Films were also characterized using Differential Scanning Calorimetry for their thermal analysis and Wide Angle X-Ray diffraction for microstructural analysis.

Tin polyesters: Polyimide blends as a dielectric material for energy storage application

2019 Fall National Meeting

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