Discharge Resistant Nano-Coatings

Nano-Iaminate coatings with highly ordered and oriented nanostructures based on Organically Modified Montmorillonite (o-MMT) were formed via co-assembling with polymer binders and applied by using various coating methods including spray coating, dip coating and blade cast coating for making films/coatings with enhanced dielectric and electrical discharge resistance. Dielectric properties of the nanoclay coatings along with their nanostructure characterization were studied for the coating processing optimization. The DC breakdown strength test and small-angle x-ray diffraction results consistently indicated that dip coated samples led to the most highly oriented nano-Iaminated structure with the highest breakdown strength. Corona endurance test was also performed on dip coated MMT nano-composite materials in comparison with other commercial available discharge resistant film. A remarkable enhancement was observed for nano-Iaminate coating, which indicated that this new nano-composite material has potential to be a processable and cost-effective dielectric material for many applications where discharge resistance device/structure/materials are needed.