LV resin recrystallized after following hot water treatment. Has it gone bad?
Low Viscosity LV Epoxy Resin
Cory,
You responded to a question I had concerning thickened LV resin and suggested that it was starting to crystallize and to subject it 135 degress using a hot water bath. I did this and shook the jug at frequent intervals during the heating process. As expected the resin was very liquid during this time. While I was not able to measure the temp of the resin itself, I was monitoring the temp of the water bath and keep it between 130 and 140 degrees for about 1 hour. Allowing time for the resin to come up to temp, I'm guessing it was about 130 degrees (based on the water bath temp) for at least 20 minutes. I stopped the water bath treatment and let the resin cool down to room temp (63 degrees). It's now (12 hrs later) just as thick as it was before the treatment. So, my question is this batch just bad (my 1 gal jug of resin had no problems)? What determines if the resin is bad to use in the first place? Or, did I either not follow the protocol correctly or long enough to allow the crystals to go back into solution? I was treating the 135 temp a max not-to-exceed temperature for the water bath and perhaps it was just on the cusp of crystallization phase of the resin and never got the resin hot enough to fully melt the crystals. Looking for the chemist at the company to advise if I should I give it another go or just punt? Thanks
Status:
Open Nov 06, 2024 - 02:23 PM
Troubleshooting
1answer
Answer
Nov 07, 2024 - 05:39 AM
Sorry to hear you're still having trouble. Every batch is quality tested, so there's no "bad batch" out there. If it still hardens i would save it for any application where you might need a thicker resin. Epoxy does not "go bad", our has a 1 year shelf life and that's only due to the color of the hardener becoming more yellow.. Your temperature is also low. 75F is the ideal temp for application. At 65 it will be thicker.
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Low Viscosity LV Epoxy Resin
MAS Low Viscosity (LV) Resin with MAS Fast, Medium or Slow Hardeners is a non-blushing, low viscosity, low odor epoxy resin system. It can be used for laminating, filleting, and gluing. It has a simple 2 to 1 by volume mix ratio, easily wets out fiberglass fabric and requires no messy washdowns. MAS...
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