Electrochemi cal study of nano composite p oly DDS / SiO۲ nan oparticles on t he surface of coppe r electrode

Electrically condu ctive thermosetting ma terials, com posite mate rials, such as anti static and conductive epoxy adhesives, contain metallic particles, fibers, flakes or other fillers, such as metal oxides, or carbon black. These materials are widely used in application fields, including automotive, aero pace, optical, medical and electronics. The desired co nductivity o f the materials determi nes the type and concen tration of conductive fi llers neede d in a given resin system . The amo unt of metal loading us ually ranges from ۶۰ to ۹۰ wt. % to reach a d esired high conductivity level [۱]. Although metals have a good electrical conductiv ity, some r eadily cover with inadequate conductivity stability on therm al cycling [۲,۳]. Furthermore, for charge dissipation the intermediate c onductivity levels required are not r eadily achie vable with carbon blacks [۴,۵].