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asarangan(at)gmail.com
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 Posted: Fri Sep 02, 2011 4:33 pm Post subject: Best way to store araldite 420 after opening the cam |
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As the subject says, I am unsure how to store the araldite resin.
Unlike the aeroepoxy, this opens like a tuna can, and cannot be
sealed. I was going to pour it into the glass jar, but I wanted to
check if there are better ideas.
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asarangan(at)gmail.com
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| Posted: Sat Sep 03, 2011 2:09 pm Post subject: Best way to store araldite 420 after opening the cam |
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That's an interesting procedure, and brings up the question if these
epoxies are better stored under vacuum to prevent long term oxidation.
There is a kitchen product called pump-n-seal which is used for vacuum
sealing food jars. I wonder if that would be of use here.
On Sat, Sep 3, 2011 at 5:53 AM, <simonnelson(at)vodamail.co.za> wrote:
| Quote: | I drill a hole in the lids and put in a 60ml syringe in the hole. Use the
syringe to dispense inverted and put it back in the hole.
Sy
Sent via my BlackBerry from Vodacom - let your email find you!
________________________________
From: "Carl Pattinson" <carl(at)flyers.freeserve.co.uk>
Sender: owner-europa-list-server(at)matronics.com
Date: Sat, 3 Sep 2011 10:36:14 +0100
To: <europa-list(at)matronics.com>
ReplyTo: europa-list(at)matronics.com
Subject: RE: Best way to store araldite 420 after opening the
cam
Small washing up liquid bottles are good and easy to dispense when =
weighing out the quantities. The resin isn’t affected by exposure = to air
but the hardener deteriorates over time = (months)
From:= = owner-europa-list-server(at)matronics.com =
[mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Karl = Heindl
Sent: 03 September 2011 02:06
To: = europa-list(at)matronics.com
Subject: RE: Best way = to store araldite 420 after opening the
= cam
It is = supposed to come with a plastic lid which you use after removing the
= metal one.
Find a = substitute like the plastic lid on a coffee tin. I just tried it
and = that fits.
<= /o:p>
<= /o:p>
<= /o:p>
> From: = asarangan(at)gmail.com
> Date: Fri, 2 Sep 2011 20:30:18 -0400
> = Subject: Best way to store araldite 420 after opening the =
> cam
> To: europa-list(at)matronics.com
>
>
> =
> As the subject says, I am unsure how to store the araldite = resin.
> Unlike the aeroepoxy, this opens like a tuna can, and = cannot be
> sealed. I was going to pour it into the glass jar, but = I wanted to
> check if there =
> are=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<=
> br>&g=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> =
<=
/b>
http://www.matron=
ics.com/Navigator?Europa-List
<=
/b>
http://forums.matronics.com=
<=
/b>
http://www.matronics.com/c=
ontribution
<=
/b>
=
=
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gregoryf.flyboy(at)comcas
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| Posted: Sat Sep 03, 2011 5:09 pm Post subject: Best way to store araldite 420 after opening the cam |
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I don't have any scientific data for that, or for those higher temps, but
have gone years with the hardener only stored in a plastic polyethylene
squeeze bottle of the type that can be tightly capped when finished with the
job, to keep the air out. The exit spout for the hardener allows one to
finely control measurements during the weighing process, since it is a small
diameter. Think of the spout as being of the type that comes on a caulking
tube, with a cap on it. My Storage temperature is thermostatically regulated
to about 65-70 degrees (heater is just a light bulb, like others have done,
which works fine in the small area), except for a few months in the summer,
where it might see a little more. The resin (the stuff that looks like
Lemon Meringue pie filling) is the only component I have seen degrade
(visually)...it can start to look a little gritty, but I think it can be
re-constituted by placing the can into a pot of water, and heating slowly..
With regards to the unopened stuff:
In the past, I have seen the shelf-life expiration date come close to 2
years out.
Lately, the expiration is only 6 months out, even on fresh batches, that
have just started their shelf life. That's too bad, since now the stuff is
twice as much 
Not sure, but am thinking the manufacturer is covering their tail for the
product having been stored in the most extreme conditions, i.e.. Very High
or cold temps, etc ...but my guess is that it will probaly store much
longer..
Greg
__________
Picking up on the deterioration of the hardner - do you have data on that?
How many months?
Does anybody have a realistic idea how long unopened 420 is good for?
Stored at over 70f
Will
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