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Paint'n a poly tank.

K

kyplowboy

Well-known Member
If you were going to paint a clear (or as clear as a used poly chemical tank can be) poly tank that was going to be setting out side, how would you go about it and what would you use?

There is a 5,500 gallon poly tank here at work that has a crack in it and they can't get it to stop leaking. Every thing they patch it with the caustic eats. Boss was worried about how she was going to get it hauled off so I told her I'd take care of it. I am going to split it lenght ways and make two 8X16 quansit huts out of it to park lawn mowers, four wheeler, maybe little tractor, and just a place to put yard stuff or feed. Might even hold 75 square bales or something one day. Just want to paint it so it don't stay hot as balls all summer.

Dave
 
A few trash barrels we have, we wrote TRASH on them with rattle cans, and it faded but did stay on for a pretty long time. This is like the apple / orange thing I realize, but just thinking out loud.
 
I didn't know if there was anything that needed to be done to it before hand. It's going to have to set a while and get rained on before I do much with it. I didn't know if there was anything that would work better than vinyl sidding paint or not with out costing much. Try'n to do this on the cheap as you can tell.

Dave
 
No paint or glue will stick to Polyethylene or Polypropylene for the long term.. Poly is basically just oil that has been polymerized into a solid matter. That oiliness will not allow paint or glue to stick.. Sorry for the bad news..
 
If you are right about using a paint that will stick to vinyl you can use any latex paint. It doesn't have to be anything special. Just read the label. You can paint vinyl siding but the companies warn against using a darker color then the original because the sun will soften it and make the siding sag.
 
While I agree that it is impossible to apply a durable paint coat to polyethylene or polypropylene, I wonder if your tank isn't made of fibre reinforced polyester. (I cannot imagine a tank that big being made of polyethylene or polypropylene.) If polyester, I would imagine that vinyl siding paint will work.
My 2c. Hendrik
 
if you do paint it, would painting it on the inside work to make the paint last longer by being out of the elements? Bill M.
 

Others are right in saying paint won't stick to polyethylene (HDPE) or polyprop very well. There are paints that will better than others. 3-M made a glue that you couln't get off HDPE so you may look at their web site.

We used to "flame" HDPE parts before we would glue or apply decals or paint. Flaming is basically running a torch over the surface lightly and quickly. This burns off the wax/oil that leaches to the surface of the plastic that keeps paint and glue from sticking.
 
I work at a city water plant. We feen caustic in the winter time (Or some times in the summer when the Green river get's really stired up) to raise the pH to compensate for low alkalinity, low raw pH, or when we just have to feed more acid alum than normal and drive the finished pH down too low. Never been around the stuff till I started working there. What do yall use it for?

Dave
 
They tried about every thing under the sun. It started leaking around the bulk head years ago and they took it out of service and used totes. Totes didn't work out very well so they tried to trim around the bulk head a put a bigger one in, after a few months it started leaking too. Did that a few times, then put a plug in it and cut a new hole for another bulkhead, plug held new bulkhead didn't. Brought some chemical reps who are always trying to sell stuff in and told them to try what they had. None worked.

Dave
 
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