opening the cam
My Aeroepoxy is over 10 years old. The opened can of hardener does
change color, to wine red, and eventually to a blackish red. It is a
bit disturbing to see this color on laminations, but the strength
appears to be good as new. The sealed cans (which also sat for 10
years) also show a slight red coloration, but not nearly as much. I
think a vacuum sealing method for storing these epoxies would be a
useful addition.
I saved opening the araldite 420 until bonding the cockpit module, and
for all other jobs I've been using the 50ml version of epibond 420.
On Sat, Sep 3, 2011 at 8:36 PM, Karl Heindl <kheindl@msn.com> wrote:
> I am still using Araldite 420 that is 10 years old and still as good as new.
> It has been open all this time, but with a lid on of course. The Araldite
> itself crystallized once or twice, but yu simply stand the can in very hot
> water for a while and give it a good stir. The hardener never changed its
> state.
> This question seems to come up regularly every few months.
>
>
>> Subject: [SUSPECTED SPAM]RE: Europa-List: Best way to store araldite 420
>> after opening the cam
>> From: wdaniell@etb.net.co
>> To: europa-list@matronics.com
>> Date: Sat, 3 Sep 2011 18:20:59 -0500
>>
>>
>> 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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