High TG epoxy
High TG epoxy
(OP)
I am hoping someone could suggest an epoxy/resin system that has a TG in the 450F range and is compatible with carbon fiber.
Now that was the easy part, the hard part is to find an epoxy/resin system that will yield the high TG and is relatively easy to work with, i.e. which can be cured initially at 100-120F and post cured at up to 500F.
Are my requirements completely unreasonable?
Now that was the easy part, the hard part is to find an epoxy/resin system that will yield the high TG and is relatively easy to work with, i.e. which can be cured initially at 100-120F and post cured at up to 500F.
Are my requirements completely unreasonable?





RE: High TG epoxy
RE: High TG epoxy
RE: High TG epoxy
> Look into the PETI resins developed by NASA...
Is this the type of stuff UBE America commercialized called PMR-15? It is my understanding that PMR-15 contains the toxic compound methylenedianiline (MDA). I've also found RP-46 (Unitech Corp.) but the info I am gathering indicates very complicated manufacturing processesa and high cure temperature and pressure -- 325°C/617°F and 200 psi -- are needed, plus there is off-gasing to worry about. What about phthalonitrile resins (Eikos Inc.)? Any comments on or experience with these products? ... I need something that can be processed/applied like epoxy. Many of these products seem to be available as prepregs only!
> 450F Tg is pretty high for an epoxy. I am not aware of any
> that have such a high Tg and can gel at such low temperatures
I am desperately trying to avoid having to build a hot cure mold
RE: High TG epoxy
RE: High TG epoxy
PT2846A/B2 (by PTMW) - this stuff will set at room temp, then after a graduated post cure TG is claimed (by PTMW) to go as high as 425F
ABOCAST 8501-5 (by ABATRON) - they claim that set is at 90F, after a 4 hour post cure, TG is at 570F.
Anybody had any experience with these systems?
RE: High TG epoxy
RE: High TG epoxy
RE: High TG epoxy
RE: High TG epoxy
If this does not pan out, I'll try to steal the industrial secrets of SpiritAerosystems/Boeing
RE: High TG epoxy
THanks!
RE: High TG epoxy
CERAMIC MATRIX Composite Brake rotors.
http:
Rink
RE: High TG epoxy
RE: High TG epoxy
I agree with others statements that 450F is high for an epoxy.
Good Luck,
Steve
RE: High TG epoxy
This might give you some additional avenues to research.
RE: High TG epoxy
You may want to look at these different companies for information about high temp epoxies:
1. www.cotronics.com
2. www.aremco.com
I'm making an exhaust system (pipe and muffler) for my ATV and have need for the high temp resistance of these epoxies. As an aside it may be useful to consider basalt sleeve material as your first layer or two if you want to do a similar project. It is able to withstand sustained temps > 1600F. Most carbon fibers that I've seen spec'd are better at 600F (please tell me if this is in error). If this works well I am considering the use of basalt sleeve to make a 4" downpipe for my diesel (where the temps routinely hit 1200F). For this application I have found ceramic-based adhesives that may be useful--don't know as I haven't gotten that far.
Please feel free to comment on the second idea as I'm just a little diabetes doctor with a case of insomnia...
Cheers,
IceKing02
RE: High TG epoxy
RE: High TG epoxy
RE: High TG epoxy
RE: High TG epoxy