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Nice site. I will call them tomorrow and see what they have to say.
Maybe I can get a test sample or the "student experiment" discount.
Alex Madsen
P.S. (I am not sure if I should mention this yet) If all goes will with
manifold development I may eventually look into compost exhaust with
this stuff:
http://www.graphitestore.com/itemDetails.asp?item_id=1561&prd_id=6&cat_i
d=4&curPage=1
This will be an even more interesting experiment.
Alex Madsen
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Marvin Kaye
Sent: Wednesday, July 07, 2004 12:43 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: High Temperature Epoxy Selection
I did a Google search on "high temperature laminating epoxy" and came up
with
a huge amount of hits. I particularly liked what I saw at De-Comp
Composites... http://www.decomp.com/indexA.htm. Once there and poking
around
I noticed that some of their product line is used by Boeing... quite the
recommendation. Down in the hi-temp laminating area I spotted all sorts
of
resin systems, all requiring post cure, and all with very impressive
strength
numbers. I clicked on their link to a hi-temp flame retardant system
(http://www.decomp.com/laminate/htlfr.htm) which is good to a HDT of
375F, has
a mixed specific gravity of 1.11 (figure 11% thicker than water...
excellent
for layups) and thought it would be an ideal candidate. Post cures in a
kitchen oven (if the parts will fit and the Missus doesn't mind) is
actually
quite simple, as is vacuum bagging. You don't actually need a real
vacuum
pump, as you can pull a good vacuum with a shop-vac or on the intake
side of
your air compressor. I buy my bagging supplies from FibreGlast
Developments
(hardware & fittings, bagging plastic, sealing tape) but I get my peel
ply
from Aircraft Spruce and my breather ply from Joanne Fabrics (polyester
fiber-fill batt insulation). ACS is also a reasonbly priced source for
carbon
fiber ($16.95/yd is excellent). I have paid as much as $37/yd for wider
crow's foot weave, but that is a bit of a specialty product... much
stronger
than plain weave, goes around curves really well and pleasant to work
with...
it's just expensive. Attached is my latest CF creation.. it's a ventral
fin I
added to the tail of the IVP I've been talking about. There are 14
plies
around the edges and there's about no deflection when you beat on it.
It's
basically 4 plies CF each side over a hardwood-strengthened foam core
with the
edges wrapped and the whole thing peel plyed. I really enjoy composite
work,
and am always happy to talk about it. Enough for now. Thanks for
listening.
<Marv>
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