Copper foil to fiberglass or carbon fiber bonding
Copper foil to fiberglass or carbon fiber bonding
(OP)
I am looking for recommendations on bonding copper foil into a fiberglass or carbon fiber laminate. The copper foil will be near the surface of the laminate but will not be exposed to corrosion environments.
I am having a hard time getting a good bond. Would the use of BR127 or BR6747 help me alot? I do not want to grit blast the copper foil if possible. I do want a pretty good bond though because of the CTE mismatch and a service temp going from -40 F up to 160 F.
Suggestions are greatly appreciated.
I am having a hard time getting a good bond. Would the use of BR127 or BR6747 help me alot? I do not want to grit blast the copper foil if possible. I do want a pretty good bond though because of the CTE mismatch and a service temp going from -40 F up to 160 F.
Suggestions are greatly appreciated.





RE: Copper foil to fiberglass or carbon fiber bonding
RE: Copper foil to fiberglass or carbon fiber bonding
e.g.
http://www
Chris DeArmitt
"Knowledge has no value except that which can be gained from its application toward some worthwhile end."
Think and Grow Rich - Napoleon Hill
RE: Copper foil to fiberglass or carbon fiber bonding
Mike Halloran
Pembroke Pines, FL, USA
RE: Copper foil to fiberglass or carbon fiber bonding
I think you had better explain what you want the foil to do. Are you looking for lightning strike protection, or static charge dissipation such as on a fuel tank, or for a radio antenna?
Static charge dissipation on a fuel tank can use Adhesive backed foil tape, so can a radio ground plane or antenna.
Lightning strike protection is another animal completely, and as Mike halloran says you would need a screen or Knitted material.
B.E.
RE: Copper foil to fiberglass or carbon fiber bonding
RE: Copper foil to fiberglass or carbon fiber bonding
B.E.
RE: Copper foil to fiberglass or carbon fiber bonding
RE: Copper foil to fiberglass or carbon fiber bonding
I would also do a water break test to see if I have a good surface prep for bonding. Have you tried using a polyester adhesive film for bonding? Finally I would vacuum bag the laminate for good compaction and throw it in an oven for curing. If possible perforating the foil would be a good idea as well.
Below is a random website I found for adhesive films. I hope this helped.
http://www.adhesivefilms.com/polyester_PAF.htm
RE: Copper foil to fiberglass or carbon fiber bonding
1) Degrease
2) Immerse for 1-2 minutes at 77F (25C) in a solution of
42% Aqueous FeCl2 soln. - 15 pbw
Conc. HNO3 (s.g. 1.41) - 30 pbw
DI water - 197 pbw
3) Rinse in cold running DI water.
4) Dry immediately with clean pressurized air at 77F
RE: Copper foil to fiberglass or carbon fiber bonding
For EMI/RFI protection, you also need to terminate the edges of the foil, continuously or pretty close to it, to adjacent metal structure/ surfaces. That's where the foil tactic, er, falls apart, especially if the joint has to be separable.
I don't have any good solutions for that problem, but I've seen quite a few tactics that didn't work.
Mike Halloran
Pembroke Pines, FL, USA
RE: Copper foil to fiberglass or carbon fiber bonding
Scott