Adhesives Question
Adhesives Question
(OP)
I have a problem with an aircraft door seal that's disbonding. The door is a composite door with a rain seal around its outer edge. The current seal is an AMS 3195 silicone rubber strip, bonded to the door with MIL-A-46106 Group I Type I silicone adhesive. I'm not an expert on adhesives, but this stuff does not seem terribly strong or durable.
Can anybody suggest a better adhesive ?
I've been through ASTM D 6465, and while that's great for the initial design, I'm looking for something a little more specific, i.e. actual manufacturer and part number, that sort of thing. Any guidance you folks can give me will be appreciated.
Can anybody suggest a better adhesive ?
I've been through ASTM D 6465, and while that's great for the initial design, I'm looking for something a little more specific, i.e. actual manufacturer and part number, that sort of thing. Any guidance you folks can give me will be appreciated.





RE: Adhesives Question
RE: Adhesives Question
RE: Adhesives Question
RE: Adhesives Question
Then again, my sample size is pretty small (3 out of a fleet of 20-odd aircraft).
Not sure about the primer, will check.
RE: Adhesives Question
Regardless, if the adhesive selection is even remotely appropriate for the application adhesive failure almost always comes down to improper surface preparation.
With a composite I would suspect contamination from mold release or amine blush.
RE: Adhesives Question
RE: Adhesives Question
Try to "rough it up" with some 120-grit sandpaper, then wipe it down with IPA before bonding.
Wes C.
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RE: Adhesives Question
RE: Adhesives Question