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Letter 37084
Polyurethane system adhesion problem on
titanium
+++++
We're having a bit of trouble with titanium parts, we're painting
them with a wash-primer, an epoxy primer and a polyurethane topcoat.
I suspect contamination from a sealant line but I also believe the
adhesion is somewaht lower on titanium than it is on aluminium
alloys. If you haven't guessed yet, I work on aircraft... and the
titanium parts achieve high temperatures (around 150ºC should be
common).
Thanks for any help.
Pedro de Oliveira
Martinho
OGMA - Alverca, Santarém, Portugal
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