Isolating metal fasteners in carbon fiber panels

[Fgayford]

I have not been able to find any information on how to isolate an imbedded stainless fastener hard point in a carbon fiber panel. I know there will be an electrical corrosion between these materials. Is one method to wrap the nut in fiberglass (Matte, veil, cloth, tow??) let it cure and then bond it into the panel? Or do it wet ??
Thanks
Fred

[michael pierzga]

Very few mechanical fasteners in the carbon structures that Im familiar with. Fasteners in carbon are poor engineering.

Heavy duty metallic components are always insulated with eglass embedded in the laminate schedule. Light fasteners are always helicoiled and waterproofed.

Most of my marine environment , human built, non mil spec, carbon experience is years old. Perhaps there are new techniques.

SS and carbon are reasonably friendly. Alloy, bronze and carbon will erode before your eyes

[Petros]

There are lots of applications in aircraft where metal fasteners are installed in carbon panels. They usually just use a sealant or adhesive in the holes and than install the fasteners "wet". Seems to hold up well in aircraft structures, should work in marine application. The deicing solutions they spray on the wings and runway are very corrosive, so if the sealant is done well to encapsulate the fastener, corrosion is not an issue.

[Passin Thru]

Retired Aviation Mechanic and we used a sealant inside fuel tanks which would last 25 years. Its rubberized and stinks and you'll have it all over you so wear rubber gloves and long sleeves. It creeps but should give you peace of mind.
http://www.sacskyranch.com/proseal.htm

[CDK]

Fred, there is no corrosion between carbon fiber laminate and fasteners. Just apply a smear of sealant while installing the fasteners.