Most epoxy systems we use require normal room temp cure (~70-80F) before
considering post curing. Leaving the wing for a couple of days will also
enhance this first catalytic process, as most epoxies takes weeks to
fully cure. Forcing a cure with regular epoxy systems by using elevated
temperatures during the primary catalyzing stage will hinder, if not
preclude proper long-chain molecular formation. Depending on quality,
all epoxies will benefit from post curing.
BTW, the only problem with electric blankets is that even distribution
of heat is impossible, therfore the molecular structure is inconsistant
across the core. Even with a heat chamber (of any kind), even heat
distribution requires forced air.
> Martin Cleary wrote:
>
> I read Fred S's post re 3m77-interesting.
> Regarding the hotbox. I have heard that the heat treatment should be
> done after the epoxy has cured from one source and another said do the
> treatment while the epoxy is setting up. Just looking for input. My
> current method is to just throw an electric blanket over the bag and
> let it cook for a day or so. If I can find some dead shop space, I
> may build a box.
--
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Simon Van Leeuwen, Calgary, Alberta
RADIUS SYSTEMS
Cogito-Ergo-Zoom
IAC25233*MAAC12835*IMAC1756*LSF5953*IMAA20209
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