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#1
posted to rec.boats.building
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old epoxy
I had some epoxy left over from a project two years ago and I tried to
use it. It seemed to have separated into a watery top part and a thicker milky bottom part. The whole mess smelled like ammonia. Nevertheless, I did use some of it by mixing it very well. It took a long time to cure but it did work. A couple of weeks later, it had gotten so that I could not even mix it so I had to throw it away. I am wondering if moisture had condensed as water in the container somehow but this would be a lot of water, almost a half gallon. |
#2
posted to rec.boats.building
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old epoxy
On Mon, 02 Mar 2009 07:50:31 -0800, Frogwatch wrote:
I had some epoxy left over from a project two years ago and I tried to use it. It seemed to have separated into a watery top part and a thicker milky bottom part. The whole mess smelled like ammonia. Nevertheless, I did use some of it by mixing it very well. It took a long time to cure but it did work. A couple of weeks later, it had gotten so that I could not even mix it so I had to throw it away. I am wondering if moisture had condensed as water in the container somehow but this would be a lot of water, almost a half gallon. I have some epoxy which is probably over 10 years old. It has darkened over the years, but it seems to work about the same. It did not separate, and doesn't smell like ammonia. So, I'm not sure what's going on with that. Julien |
#3
posted to rec.boats.building
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old epoxy
I had left some West system at a friend's and forgot about it.
He brought it back because he is moving. It's at least 10yo. both pumps are solid as a rock, but the stuff in the cans is just fine. Matt Frogwatch wrote: I had some epoxy left over from a project two years ago and I tried to use it. It seemed to have separated into a watery top part and a thicker milky bottom part. The whole mess smelled like ammonia. Nevertheless, I did use some of it by mixing it very well. It took a long time to cure but it did work. A couple of weeks later, it had gotten so that I could not even mix it so I had to throw it away. I am wondering if moisture had condensed as water in the container somehow but this would be a lot of water, almost a half gallon. |
#4
posted to rec.boats.building
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old epoxy
Frogwatch schrieb:
I had some epoxy left over from a project two years ago and I tried to use it. It seemed to have separated into a watery top part and a thicker milky bottom part. The whole mess smelled like ammonia. Nevertheless, I did use some of it by mixing it very well. It took a long time to cure but it did work. A couple of weeks later, it had gotten so that I could not even mix it so I had to throw it away. I am wondering if moisture had condensed as water in the container somehow but this would be a lot of water, almost a half gallon. Are you sure it is real epoxy and not one of the nearly but not completely similar mixtures mostly made for car repairs? Regards, Rainer |
#5
posted to rec.boats.building
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old epoxy
Frogwatch wrote:
I had some epoxy left over from a project two years ago and I tried to use it. It seemed to have separated into a watery top part and a thicker milky bottom part. The whole mess smelled like ammonia. Nevertheless, I did use some of it by mixing it very well. It took a long time to cure but it did work. A couple of weeks later, it had gotten so that I could not even mix it so I had to throw it away. I am wondering if moisture had condensed as water in the container somehow but this would be a lot of water, almost a half gallon. the part A has begun to crystallize on you. Heating it up (like honey) would dissolve the milky crystals and make it as good as new!. The part B will darken over time and develop a strong amonia smell, it is fine to use. paul oman progressive epoxy polymers, inc www.epoxyproducts.com/marine.html |
#7
posted to rec.boats.building
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old epoxy
On Mar 3, 10:01*am, Paul Oman wrote:
Frogwatch wrote: I had some epoxy left over from a project two years ago and I tried to use it. *It seemed to have separated into a watery top part and a thicker milky bottom part. *The whole mess smelled like ammonia. Nevertheless, I did use some of it by mixing it very well. *It took a long time to cure but it did work. *A couple of weeks later, it had gotten so that I could not even mix it so I had to throw it away. *I am wondering if moisture had condensed as water in the container somehow but this would be a lot of water, almost a half gallon. the part A has begun to crystallize on you. Heating it up (like honey) would dissolve the milky crystals and make it as good as new!. The part B will darken over time and develop a strong amonia smell, it is fine to use. * * * * * * * * * * * * *paul oman *progressive epoxy polymers, inc *www.epoxyproducts.com/marine.html I had some West System epoxy that was easily 12 years old that I used for some repair work and other than the dark-coffee color, it was fine. I called Gougeon before I used it and they said that other than the color, so long as it's kept reasonably well sealed it's fine. As it turns out, the limitation is on the can itself - a year or so later, the can perforated with rust and began to leak....s |
#8
posted to rec.boats.building
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old epoxy
On Mar 2, 11:50*am, Frogwatch wrote:
I had some epoxy left over from a project two years ago and I tried to use it. *It seemed to have separated into a watery top part and a thicker milky bottom part. *The whole mess smelled like ammonia. Nevertheless, I did use some of it by mixing it very well. *It took a long time to cure but it did work. *A couple of weeks later, it had gotten so that I could not even mix it so I had to throw it away. *I am wondering if moisture had condensed as water in the container somehow but this would be a lot of water, almost a half gallon. I believe the resin itself has a long shelf life. But the shelf life of the hardener is very short. If I found some left over old epoxy, I would throw away the hardener, but kept the resin, and tried a test batch to see if it cured similar to the way of fresh resin. Jay Chan |
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