High temp epoxy

[Gray E Fowler]

First, NEVER dilute epoxy adhesives with anything. If you do you will end 
up with the epoxy plus the crap you put in as a finished product resulting 
in an incomplete reaction which equals lower strength, lower temperature 
resistance and lower chemical resistance. This is not "glue".  Second JB 
weld does not come close to the temperature requirements of an exhaust 
system. Whats epoxy does? Not too many that cure at room temp. Metal 
(aluminum powder) does not increase the temperature resistance, only keeps 
the adhesive from softening as much as a non filled version.
The best bet for your application is Hysol 9394. This adhesive cures at 
room temp and then with an elevated post cure can withstand 350F 
continuously.  Heres how to get some free........everyone remember 
this-trust me it works. 

First make up a fake company name ( or if you can use your real company 
name).  Log onto www.dexteraero.com get the contact info closest to where 
you live.  Call and say that you are investigating high temp epoxy 
adhesives and are bonding and conducting Lap shear tests at 300 and 350F. 
Your analysis says you need about 1000 PSI of shear strength at 330F-ask 
for Hysol 9394. You are bonding 3 different times and only need about 100 grams for each time. They will send you 3 
pre-weighed mixing semco cartridges. If they start asking you questions 
that you cannot answer prentend to be new on the job and where told to do 
this, or better a supply chain management person-they buy everything 
without knowing anything......Hysol will send these as free samples. If 
you are worried than you can by these cartridges from from the local 
distributor for about $35 each or get a quart for about $75.

Now if there is a Hysol rep on this list then NEVER MIND.......It all for 
the promotion of pattern.......



Gray Fowler
Principal Chemical Engineer
Composites Engineering




"Ihncheol Park" <PatternFlyer at msn.com>
Sent by: discussion-request at nsrca.org
09/05/2002 10:21 PM
Please respond to discussion

 
        To:     "NSRCA" <discussion at nsrca.org>
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        Subject:        High temp epoxy


What kind of epoxy can handle exhaust temperature?
I need one to fix my ES carbon pipe, but could not find one today.  I went
to local Schuck's auto part, they only had something with metal in them. I
have lots of JB Weld, but am trying to find clear epoxy.
Any suggestions?

Ihncheol Park
1973 White Ave., #402
Moscow, ID 83843
(208) 883-7882 Home
(208) 661-5018 Cellular
PatternFlyer at msn.com

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