Crystalization of Epoxy

Discussion in 'Materials' started by Phil Westendorf, Jun 3, 2012.

  1. Phil Westendorf
    Joined: Jun 2012
    Posts: 35
    Likes: 1, Points: 0, Legacy Rep: 20
    Location: Saginaw, MI

    Phil Westendorf Junior Member

    Recently I was the recipient of two five gallon cans of Dow D.E.R. 331 Epoxy Resin in steel containers. It has crystallized, I assume it's been stored in someones garage for some time. According to Dow's Tech Data Sheet it's like frozen water just thaw it until the whole mass is at 50 Degrees C (122 F). Sounds easy, eh.
    Well my question to you folks is: How in the heck do I heat it? First it must be outdoors, I have homeowners ins, but I am not taking any chances, if you know what I mean. Don;t like the idea of sitting around with a torch pointed at the can. The five gallon can is a bit much for an elecrtic hot plate....
    I tried to "thaw"a small amount in a plastic quart bottle of another brand a couple of years ago by putting it in a black garbage bag in the Sun. Didn't work!
    If someone out there has any experience I am open to suggestions.

    phil w
     
  2. Silver Raven
    Joined: Oct 2011
    Posts: 437
    Likes: 12, Points: 0, Legacy Rep: 67
    Location: Far North Queensland, Australia

    Silver Raven Senior Member

    Gooday 'Phil' . Take approx 500ml or 500 grams - put it in a plastic (like Tupper ware) container - with a loosly titting lid - put it in a micro-wave - on low or medium - give it 30 seconds, or 60 seconds - or whatever - it will soon turn to liquid & be as usable as it was when it was first made. Regardless of the 'company-chemists' it will have 99% of it's original properties. Been doing that in my Fiberglass Reinforced Plastics for well over 30 years & I've never had a problem - of any kind. Just go at it softly - softly - - you'll gain in confidence & see that it works just fine. Ciao, james
     
  3. Herman
    Joined: Oct 2004
    Posts: 1,618
    Likes: 89, Points: 48, Legacy Rep: 1240
    Location: The Netherlands

    Herman Senior Member

    55 gallon drums are easy: you can buy heaters for them.

    If the 5 gallon drums you have are metal, you can heat them on a portable electric stove. Open the lid just a bit, to prevent pressure build-up.

    I like the container to be completely liquid and stirred well before using the contents, to prevent any change of separation of the contents.
     
  4. TeddyDiver
    Joined: Dec 2007
    Posts: 2,588
    Likes: 125, Points: 73, Legacy Rep: 1650
    Location: Finland/Norway

    TeddyDiver Gollywobbler

    1# 5 gallon drum is easy in the sauna.. of course if you happen to have a sauna.
    2# Put it in a tub of hot water.. (not submerged thou)
    3# Warm air blower (domestic kind of.. ) and a big box over both, works also with 55gallon drums just takes a bit more time and an extra blanket over..
    BR Teddy
     
  5. goodwilltoall
    Joined: Jul 2010
    Posts: 844
    Likes: 26, Points: 28, Legacy Rep: 31
    Location: nation of Ohio

    goodwilltoall Senior Member

    Get $40.00 porpane torch at Lowe's and start slowly walking around with heat, also elevate bottom on clay bricks. Seen guys do this with foundation tar in winter.
     
  6. mydauphin
    Joined: Apr 2007
    Posts: 2,164
    Likes: 53, Points: 48, Legacy Rep: 575
    Location: Florida

    mydauphin Senior Member

    Leave it outside in mid day in back of pickup while you drive around.
     
  7. Stumble
    Joined: Oct 2008
    Posts: 1,901
    Likes: 71, Points: 48, Legacy Rep: 739
    Location: New Orleans

    Stumble Senior Member

    Last time I had this happen I just so happen to "need" a propane grill. The burner on my new grill worked great.
     
  8. PAR
    Joined: Nov 2003
    Posts: 19,133
    Likes: 488, Points: 93, Legacy Rep: 3967
    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Sweet God, no torches or flames. Just drop it the thing into a container full of water fresh from a standard hot water heater (usually about 125 degrees from the tap). This will reconstitute the molecules. No grills, no burners, no silly stuff, just common sense. If you like you can heat the water on the stove until it's in the 150 to 175 degree range and add this to the regular tap water. It doesn't have to real hot and mixing during the process will speed things up.
     
  9. pauloman
    Joined: Jun 2010
    Posts: 268
    Likes: 10, Points: 18, Legacy Rep: 151
    Location: New Hampshire

    pauloman Epoxy Vendor

    a cabinet/box with 2 100 watt light bulbs will get the temp to about 105 - process will probably take a few days...

    that's how I do it ---

    paul oman
    progressive epoxy polymers inc.
     
  10. Phil Westendorf
    Joined: Jun 2012
    Posts: 35
    Likes: 1, Points: 0, Legacy Rep: 20
    Location: Saginaw, MI

    Phil Westendorf Junior Member

    Guys,
    I appreciate all the various ideas. Not sure which one I'll use but it doesn't seem to be such a significant challenge. I have an electric smoker, I think I'll try it with out the enclosure. Don't really like the idea of eating smoked fish or meat tasting like Epoxy. Thanks,
    phil w.
     
  11. philSweet
    Joined: May 2008
    Posts: 2,475
    Likes: 273, Points: 83, Legacy Rep: 1082
    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member

    Think really low power and lots of time, like 24 hours for a five gallon pail. You can sit it in the sun on the asphalt in most places. In Saginaw, you might need a bit of help. Once you get it all mixed up again, divide into containers that will fit in the micro. The stuff REALLY heats up in the micro. 10 seconds for a gallon or so ought to do it. 60 seconds and you'll melt the container. You could just sit it over a heat register for that matter.
     
    Last edited: Jun 6, 2012
  12. troy2000
    Joined: Nov 2009
    Posts: 1,743
    Likes: 170, Points: 63, Legacy Rep: 2078
    Location: California

    troy2000 Senior Member

    Amen. Approach it like you're making Hollandaise sauce.

    No sense aiming fire at something that's flammable or vulnerable to overheating, even if it's in a container that's theoretically sealed from the flames.
     
  13. SheetWise
    Joined: Jul 2004
    Posts: 279
    Likes: 54, Points: 0, Legacy Rep: 658
    Location: Phoenix

    SheetWise All Beach -- No Water.

  14. Herman
    Joined: Oct 2004
    Posts: 1,618
    Likes: 89, Points: 48, Legacy Rep: 1240
    Location: The Netherlands

    Herman Senior Member

    I don't fancy open flames as well. Over here the guys heated a valve with a flame:

    [​IMG]
     

  15. PAR
    Joined: Nov 2003
    Posts: 19,133
    Likes: 488, Points: 93, Legacy Rep: 3967
    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Incandescent bulbs work and what I do with smaller quantities too. If you need it quick and/or a big drum, the hot water, straight from the tap will work, much faster too.
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.