Staking Teflon Wire

[qu1nn]

Hello,

I am looking for a material that would stake teflon coated wire to steel. I am hoping for some of the following characteristics:

1. relatively thick, quick cure
2. chemical resistant to degreasing solutions commonly used to remove flux when soldering
3. non-conductive, good insulation properties ** important**



Thank you for your time and suggestions
qu1nn


Qu1nn

 

[MikeHalloran]

Loctite used to sell a 'Tak-Pak' comprising a fast-dry brush-on primer and a thick fast-cure cyanoacrylate adhesive. It worked very well at holding Kynar insulated wires to solder- masked printed circuit boards.

Something like that would work in your application, except of course that nothing really sticks to Teflon. I.e., you can't bond to the insulation, you have to trap it in place.
If you built up the CA to form a bridge over the wire, that would be better, but it wouldn't be a very durable setup. It would hold the wire in place long enough for a big ol' blob of RTV silicone to set up.



Mike Halloran
Pembroke Pines, FL, USA

 

[btrueblood]

Bonding of epoxy resins to teflon can be done, but requires etching the teflon with HF acid first.

 

[btrueblood]

Oh, and if you go that route: etch the wire by first bending it double and dipping the bent area into etchant. Then rinse and/or neutralize excess acid, then proceed to cut and strip the wire. Otherwise, you end up with residual HF wicking into and contaminating your wire and all subsequent processes.

 

[zeitghost]

Bearing in mind that HF is such very very friendly stuff...