Elevated Temperature Epoxy
Elevated Temperature Epoxy
(OP)
Hello Everyone,
I am looking for a room temperature curing epoxy that will not degrade in the 160 to 220 deg F temperature range. Something in a colorless epoxy with a viscosity less than 700 for RTM. I have been using several of the 2:1 epoxies and they have been working well for other projects, but I now have a project that the part may be exposed to direct sun and reach temps above 160 F. My initial tests showed that the 2:1 gets soft and also shows fabric break through. I have tried post cure at 140 F and adding UV safe clear coat, but the test parts still degrade. Are vinyl esters or polyester resins the only solution? Any thoughts?
Thanks.
Mike
I am looking for a room temperature curing epoxy that will not degrade in the 160 to 220 deg F temperature range. Something in a colorless epoxy with a viscosity less than 700 for RTM. I have been using several of the 2:1 epoxies and they have been working well for other projects, but I now have a project that the part may be exposed to direct sun and reach temps above 160 F. My initial tests showed that the 2:1 gets soft and also shows fabric break through. I have tried post cure at 140 F and adding UV safe clear coat, but the test parts still degrade. Are vinyl esters or polyester resins the only solution? Any thoughts?
Thanks.
Mike





RE: Elevated Temperature Epoxy
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EA9396 is good to 350° with good properties. I'm not sure what the viscosity is, but it calls it low viscosity.
-Kirby
Kirby Wilkerson
Remember, first define the problem, then solve it.
RE: Elevated Temperature Epoxy
TenCate is supplying a lot of different grades of resins.
They have also a selector guide (see link).
http://
RE: Elevated Temperature Epoxy
I also tried a Loctite H8000 which resisted heat very well. It's "methactrylate", and when mixed 10:1 it has a consistency like toothphaste. Applying it is tricky but once cured the bond was good.
Steven Fahey, CET
RE: Elevated Temperature Epoxy
Epicure 3218 is a pretty good room temp curing agent used with Bis A epoxy. Believe with heloxy modifiers can reduce the viscosity where you want it.
RE: Elevated Temperature Epoxy
technical reps from huntsman and cook. They have both suggested examples to try. I should have results in about 3 weeks that I will post.
Mike