Roll your own – nano-nanocomposite capacitors

摘要: Commercial and liquid-feed flame spray pyrolysis (LF-FSP) processed nano-BaTiO3 with average particle sizes (APSs) of 50 nm were mixed [glycidylSiMe2OSiO1.5]8 (OG, Q cage epoxy) diaminodiphenylmethane (DDM) at loadings 30, 40 vol% (69, 77 83 wt%) to form nano-nanocomposites. We demonstrate processing flexible films 10–13 μm thicknesses on a variety substrates but especially thick aluminum foil. The octafunctional glycidyl silica epoxy resin combines very high flexibility needed for rolling the potential impart good-to-excellent breakdown voltages hence higher energy densities. Nanopowders cast without characterized by FTIR, TGA, SEM, XRD etc. dielectric constants also providing (loss tangents) 18 (0.05), 21 (0.06) 16 (0.11) films, respectively 100 KHz. Only 30 Al foil wound capacitors as exhibited excessive porosity resulting from agglomeration induced during curing/coating resin. Rolled fabricated simply stacking two strips nanocomposite them around metal rod used mandrel. found storage ranged 80–90 nanofarads (33–37 nF cm−2) whereas that equivalent biaxially oriented polypropylene (BOPP) same would exhibit only 9–12 (4–5 similar voltages. Current work provides first example rolled BaTiO3/epoxy capacitor excellent replacing commercially available counterparts. Furthermore, achieve much densities through further optimization suggests possibility reducing dimensions any given capacitor.