My RR Epoxy Looks like apple sauce! I have never seen this happen, I’ve been out of the shop for a month or so and went back today to work on some boards and the resin looks a bit chunky. So I put it on a heater and it looked better after that. Does anyone know why this happened?
hmm…i dunno…but i’m gonna go check my RR…it’s been awhile!
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My RR Epoxy Looks like apple sauce! I have never seen this happen, I’ve been out of the shop for a month or so and went back today to work on some boards and the resin looks a bit chunky. So I put it on a heater and it looked better after that. Does anyone know why this happened?
Was it the resin or the hardener? What was the temps lin your room?
Most epoxy resins (RR included) are Bisphenol A based. BPA crystallizes over time at lower temperatures. Heating it up to get it in to solution is the right approach. A warm bath of water is usually the best way to do this; make sure the cap is on so it doesn’t suck moisture or you WILL have blush problems later. Some resins are worse for this than others; higher content BPA; the more crystallization will be an issue. One resin I use crystallizes real bad; I haven’t used it in a while, but my basement is kinda cold and I watched it transition from a clear liquid to an impermeable solid in about 2 weeks.
Uh; to be on the safe side, I’d test the stuff that you warmed up before doing an important lam. Test panels are always a good idea…
Cheers,
G
Thank you for the input, I’m in new Jersey the only thing I can think is the concrete had somthing to do with it.The temps have not been to low here.
The resin, my hardener is fine.
I have some that had been sitting around awhile that went
semi-solid gooey.
How gooey was it? So gooey it wouldn’t budge even with the jug upside down. Pouring it out? - no way. It was harder than Pamela Anderson’s old breast implants.
There was less than a quart left in a gallon jug so air in the jug may have had something to do with it(?) I also live where it is relatively cool - 65 degree day time temperature and cooler nights. I probably shouldn’t even use epoxy where I live but aside from some blush issues, I’ve never had it not go off.
I unscrewed the cap and put it in my trusty microwave for about a minute and a half. The resin turned liquid and works fine.
I don’t know if it’s safe to do what I did so use your own judgement.
I’ve seen Add F go semi-solid and “slushy” at cooler temps…did you mix it into the resin?