| |
 |
|
|
Science Forum Index » Materials Forum » hole fill/plug material
Page 1 of 1
|
| Author |
Message |
| Guest |
 Posted: Fri Apr 04, 2008 10:32 am |
|
|
|
|
I'm looking for a material (preferably polymeric) to plug a hole
through some 0.40" thick aluminum.
Hole diameter: 5/8"
The material needs to have a low MVTR (on the order of ~3.0 g/24hr/m^2/
atm or lower), and not release volatiles when heated up to around 90
C. I've searched on (http://www.matweb.com) with some luck, so far
I've found HDPE, and Ethylene Vinyl Acetate.
Does anyone have an idea of other materials I could look into?
Thanks for any help you can provide. |
|
|
| Back to top |
|
| Mark Thorson |
| Posted: Fri Apr 04, 2008 5:00 pm |
|
|
|
Guest
|
mr_wizard2@hotmail.com wrote:
Quote:
I'm looking for a material (preferably polymeric) to plug a hole
through some 0.40" thick aluminum.
Hole diameter: 5/8"
The material needs to have a low MVTR (on the order of ~3.0 g/24hr/m^2/
atm or lower), and not release volatiles when heated up to around 90
C. I've searched on (http://www.matweb.com) with some luck, so far
I've found HDPE, and Ethylene Vinyl Acetate.
Does anyone have an idea of other materials I could look into?
Cork has excellent temperature resistance, and it
will hold itself in the hole if compressed during
insertion. It is very resistant to compression
set, unlike any solid elastomer. Artificial
materials used as replacements for corks in
wine bottles are also possibilities. You can
be sure these materials are relatively clean,
otherwise they wouldn't be used for wine.
If you only need one, you could carve it from
a wine bottle cork. Those are greater than
5/8 inch. Buying a bottle of wine would be
the cheapest and easiest way to get a piece,
and you could always send the wine to hazmat
disposal (if you're Mormons or something).
A platinum-catalyzed addition cure silicone will
not outgas as part of its curing mechanism, but
there will be low-molecular weight silicone
oligomers which are emitted. That's a big problem
for silicone in sensitive applications. You can
get special silicones stripped of these oligomers,
such as Dow Corning 93-500, but that's expensive
stuff. |
|
|
| Back to top |
|
| |
|
Page 1 of 1
All times are GMT - 5 Hours
The time now is Mon May 12, 2008 10:06 am
|
|
