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2k poly safety/ respiration etc12/1
Wodering what people who use a 2 k poly such as Verde or polarion are doing for protection/ Have heard that stuff can can be sneaky bad for you/
i spray Ilva 2K urethane.
Make sure you have good air flow. Wear clothes that won't allow overspray to get to your skin. If you don't have a supplied air system then change the filter in your respirator every day. If you have a whiskers get clean shaven so the mask works as good as possible.
Occasional spraying with 2K poly you'll have a hard time injuring yourself unless you are blatantly using unsafe spraying practices.
If 2K will be your primary system and you are in the both most days, then the Tyvek coverall and supplied air is the safest way to go.
I'd take the odor of MLC Krystal over Polarion any day. LOL
I spray a lot of 2K. I used to use an Allegro air supplied system, but switched to the 3M one with a VersaFLo mask and I like it a lot better. I also use Tyvek coveralls and nitrile chem resistant gloves.
The regular 3m carbon filters work for iso's. But they don't work for very long. In the safety sheet it says that you will not be aware(smell) when the filter stops working. That is why Leo mentioned changing the filters daily.
They have very good properties. I'm curious what people are spraying frequently enough to have a supplied air rig.
Interestingly the iso's are only really dangerous if you aerosol them. You can brush 2k linear poly marine paint(Awlgrip) without the full hazmat kit. That stuff is really old school and has a very high amount of iso. The paint is incredibly durable.
we probably spray five gallons a month but use a supplied air set up. 3m mask connected to a bullard belt, hose, and pump. it is a comfortable set up, but dragging the hose around is not much fun. tyvek suit and gloves, too. beats dying, though.
i have been told that with good air circulation (fan) the iso's, provided you aren't standing downhill, get pulled away quickly enough to not be a serious health concern. i'm not sure i believe it, but our finish supplier told me this.
we spray in an automotive paint booth.
As adam says, iso is a bit weird. It reacts *very* quickly with the moisture in air (that's why the can of catalyst doesn't survive long once opened, unless you bloxygen it or have a way to re-vacuum seal it).
It is also heavier than air.
The upshot is that, assuming a very good supply of air, your main risk due to inhalation is from bounceback/etc.
Still not worth playing around with (I would always use supplied air), mind you, but it's not like formaldehyde or other things that are still there 10 minutes later.
As also mentioned, brushing/rolling is very safe - all studies i've read show no measurable quantity reaches the breathing zone due to how fast it reacts.
I use a 3m ultimate fx full facemask with an allegro pump.
3m makes a converter for the mask that twists on where the filters normally go, so you can swap between filters and supplied air really easily.
They also make a converter that does both filter and supplied air, using the filter when supplied air is not present.
We are using a product by Alcea and they have a catalyst that is free of iso.
The catalyst we use is 9981/A699 along with Primer FB1090 and pigmented top coat 531A/MSBB