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11-29-2018, 08:10 PM
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Join Date: Jan 2005
Posts: 833
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High temp epoxy
Anyone use high temp epoxy resin?
Aeropoxy or what do you recommend?
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Steve "Stu"
Cold Lake, Alberta
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11-29-2018, 08:39 PM
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Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,186
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For?
I used the West system and have not had any issues on my -10...
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Bob
Aerospace Engineer '88
RV-10
Structure - 90% Done
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11-30-2018, 04:02 AM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,092
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Quote:
Originally Posted by sjhurlbut
Anyone use high temp epoxy resin?
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In what application, please?
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(2020 dues paid)
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11-30-2018, 05:13 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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+1
Quote:
Originally Posted by snopercod
In what application, please?
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Yes, but still have this question as they generally require a specific high temperature post cure and are very tender and weak until fully cured. PTM&W does make a wide range of excellent products, Aeropoxy among them. The Tech line guys are outstanding.
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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11-30-2018, 07:22 AM
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Join Date: Aug 2006
Location: Taylor Texas
Posts: 811
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words from an epoxy engineer
Yes, there are 'high temp resins', but according to an engineer I trust (he designs resin systems) they all catch on fire at about the same temp. I was looking for some FWF parts to be made from a 'High Temp' resin, but it turns out the high temp stuff will still burn when near a heat source like an exhaust manifold etc. He did mention the temp where they all will burn, but danged if I can remember what that was - maybe 450F or so?
If I am recalling the conversation well enough, the 'high temp resin' has a higher post cure temp, and that is about it.
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Best,
Mark
"Not everyone needs a Rocket. Some folks, however, shouldn't live life without one.
You know who you are."
Budd Davisson, 1997
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11-30-2018, 07:23 AM
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Join Date: Jan 2010
Location: Southern Michigan
Posts: 1,964
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MGS L285 is an excellent choice for post cure composite work.
https://www.pilotshop.com/catalog/cm...iABEgLHkvD_BwE
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David C.
Howell, MI
RV-10: #41686 Under Construction
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"Donor Exempt" but donated through Dec. 2020
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11-30-2018, 07:48 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,477
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Good numbers for a room temperature cure epoxy. I have some exit parts running very close to a hot tailpipe without issue.
https://www.aircraftspruce.com/catal...tr212resin.php
West 105 has very low temperature ratings.
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Dan Horton
RV-8 SS
Barrett IO-390
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11-30-2018, 07:51 AM
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Join Date: Jan 2005
Posts: 833
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Custom
Quote:
Originally Posted by snopercod
In what application, please?
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Custom plenum and air intake. Maybe not really required but I ordered my last air intake in high temp epoxy from Sam James and it worked great. Previous one scorched from the exhaust proximity.
Think I'll just make plenum out of West Systems but was curious. I get the high curing temp as well which would be difficult in my application.
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Visit and subscribe to Stu's Aircraft Factory on
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Steve "Stu"
Cold Lake, Alberta
7A #70015 - C-FZQX - built - sold
7A #71629 - C-FSIS - built - sold across Atlantic
7 #70215 - C-GOJU - flying - sold
7 #70703 - C-GMIY - flying - sold
6 #60119 - C-FHBZ - built - Airventure 2016 Bronze Lindy - sold
8 #82842 - C-FSBG - Fastback - built - sold
4 #2723 - building
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11-30-2018, 07:57 AM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,562
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DPL862 is a widely used base stock for most epoxies. The manufacturers add their herbs and spices to change various attributes. DPL 862 turns to apple sauce when cold but its easy to fix by keeping it in a metal can and putting it on low heat before use. The additives typically used to prevent crystallization also weaken the epoxy.
Nice thing about DPL862 is its about half the cost when you take out the middle men.
https://www.avtcomposites.com/produc...oxy-resin-gal/
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Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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11-30-2018, 08:45 AM
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Join Date: May 2006
Location: Pocahontas MS
Posts: 3,884
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Here's a data point. The EZ builders were making their engine baffles out of fiberglass 30+ years ago, and I doubt they were using exotic high temp epoxy back then.
I can barely *spell* 'layup', but if a fiberglass item was scorching from exposure to heat from the exhaust, wouldn't a radiant heat barrier would do more good than higher temp epoxy?
Charlie
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