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Curing Epoxy
Curing Epoxy
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Alexandre
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Alexandre
posted 8 Years Ago
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Hi,
I have a question regarding curing epoxy to get the best results. The project is a hand layup of fiberglass 3 oz and I'm working with a room temperature curing epoxy with the following properties:
- Gel Time (@ 21C) 38 min
- Demold Time 24hr
- Deflection temp 53 C
- full cure at room temperature 7 days
I'm a lite confused about what is considered the
"
curing'' and
"post-cure" period, when and how much heat to apply (and for how long).
Thanks
Alexandre
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Curing Epoxy
Alexandre
-
8 Years Ago
Oh and how the heating affect the full cure time?
Alexandre
-
8 Years Ago
The demould time is when you can remove it from the mould. The epoxy will only be partially cured at demould and depending on temperature, can take a few weeks to a month or two to fully cure...
Warren (Staff)
-
8 Years Ago
Thanks for the quick answer! So main cure and post-cure should be specified by the manufacturer? In my case there doesn't seem to have this information, can anything be done in this case? Alexandre
Alexandre
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8 Years Ago
I would definitely email the manufacturer. If they have no data on even the simplest room temperature cure times then I would probably consider then fairly incompetent!
Warren (Staff)
-
8 Years Ago
Not uncommon to find no post-cure data, but generally you should always be able to find a 'Tg' or 'HDT' value, which is the upper temperature limits of the resin. For most entry level epoxies this is...
Hanaldo
-
8 Years Ago
I've gotten word from the manufacturer and indeed the epoxy is not designed for high temperature applications. Hence, they don't suggest any curing schedule.
Alexandre
-
8 Years Ago
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