Definitely off-topic, but interesting . . .
I have a friend who is making his new home out of a 727 airplane (see
www.AirplaneHome.com <http://www.AirplaneHome.com> for details). He is
investigating coatings he might use to "paint the house", and has rejected
his first choice (Kapton) when he found that it deteriorates when exposed to
UV and Oxygen (I think that was what it was). Since I've seen some amazing
insights shared on this group, I thought I'd dangle this challenge in front
of the group to see what happens . . . Any (and all) suggestions will be
appreciated and investigated. Please let me know of your suggestions and
I'll forward them to him.
Thanks
Carl Van Wormer
Cipher Systems
1815 NW 169th Place, Suite 5010
Beaverton, OR 97006
Phone (503)-617-7447 Fax (503)-617-6550
p.s. here's a snippet from my last contact with the airplane/home owner:
Hot dog, thanks very much. I've always been very fond of RTVs - they seem
more stable than any conventional paint, or any other coating short of
Teflon. I've never in my life seen any evidence of any form of
deterioration
of RTVs, and they've been around since I was a kid. I've always thought
they'd make a great roof coating for my mobile home (back when maintenance
of
the structure would've been justified) or the freight vans.
The timing is quite good too in that I've been thinking about coatings
again.
I've been pressure washing again in the last few days, and I've noted that,
while the color coats often flake off, the chromates don't, although they
can
bleed off. That is, the chromates seem to form a chemical bond with the
aluminum, whereas the paint just forms an adhesive bond, which, like all
adhesive bonds, is unreliable. When the pressurized water is forced onto
the
chromate at its most aggressive (with the wand within a cm or two of the
surface), the chromate sometimes get fainter and fainter as if they're being
abraded off. But they never peel. That's impressive.
And that's what I'd like in a coating - a true chemical bond, so that it's
literally part of the metal, not just a layer over the metal. Well, that,
plus absolute immunity to UV, chemical weathering, and every other factor
that makes a coating just plain perfect.
Teflon's been on my mind too. It's extremely stable of course. But I'm not
sure what the nature of it's bond is, or what the economics are - I need to
look into it.
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