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Adohrn Member
Joined: 09 Mar 2012 Posts: 308 | TRs | Pics
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Adohrn
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Thu Jul 26, 2018 2:33 pm
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Need to seam seal a silynylon tarp, and needing to buy new mineral spirits. It appears they have come out with new formulas that make the mineral spirits more eco friendly, but not good for sealing. So how do I know which one I’am buying?
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Ski ><((((°>
Joined: 28 May 2005 Posts: 12830 | TRs | Pics Location: tacoma |
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Ski
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Thu Jul 26, 2018 5:10 pm
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paint store.
"I shall wear white flannel trousers, and walk upon the beach.
I have heard the mermaids singing, each to each."
"I shall wear white flannel trousers, and walk upon the beach.
I have heard the mermaids singing, each to each."
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DIYSteve seeking hygge
Joined: 06 Mar 2007 Posts: 12655 | TRs | Pics Location: here now |
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DIYSteve
seeking hygge
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Thu Jul 26, 2018 6:30 pm
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GE Silicone II cut with Klean-Strip brand mineral spirits from Home Depot has worked well for me.
Where did you read or hear that mineral spirits formula has changed?
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Adohrn Member
Joined: 09 Mar 2012 Posts: 308 | TRs | Pics
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Adohrn
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Thu Jul 26, 2018 8:31 pm
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Good question Bigsteve. Variety of sources one was backpacking light. Went to the hardware store, and the mystery was not very mysterious. They were selling the original blue can of Kleen, and right next to it was a green can of mineral spirits that said eco friendly. I guess places like California by state law now only sell the eco friendly version. That version does not work for our purposes. Thinking I might grab a few more cans of the original as it might be being phased out. Thanks for the the replies.
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Malachai Constant Member
Joined: 13 Jan 2002 Posts: 16092 | TRs | Pics Location: Back Again Like A Bad Penny |
Yes, I got a bottle of the new stuff by accident. It is a white emulsion quite unlike actual mineral spirits and has a lemon scent. Will not work as a no polar thinner as it has water in the formulation.
"You do not laugh when you look at the mountains, or when you look at the sea." Lafcadio Hearn
"You do not laugh when you look at the mountains, or when you look at the sea." Lafcadio Hearn
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hbb Member
Joined: 06 Aug 2009 Posts: 405 | TRs | Pics
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hbb
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Tue Jul 31, 2018 12:41 pm
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DIYSteve wrote: | Where did you read or hear that mineral spirits formula has changed? |
Volatile Organic Compounds ("VOC's") are subject to some pretty strict limits in some states, resulting in some manufacturers and retailers producing/carrying primarily low VOC products as a cost-saving measure. As an analogy, it's like a car manufacturer designing vehicles to be compliant with CA emissions standards, even though the vehicles will be sold in markets with less stringent standards. One source: https://www.popularwoodworking.com/techniques/finishing/beware-voc-compliant-solvents
In Washington it's normally not hard to find the high VOC products, even though low VOC versions are typically available as alternatives.
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Randito Snarky Member
Joined: 27 Jul 2008 Posts: 9512 | TRs | Pics Location: Bellevue at the moment. |
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Randito
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Tue Jul 31, 2018 1:57 pm
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Adohrn wrote: | That version does not work for our purposes. |
How do you know the ECO version doesn't work?
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Adohrn Member
Joined: 09 Mar 2012 Posts: 308 | TRs | Pics
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Adohrn
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Wed Aug 01, 2018 11:07 am
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Personally I don’t, but have read warnings by others that have tried that it does not work. Don’t remember the full details, but had to do with mixture not really mixing. From Malachai Constants description it sounds like it’s impossible to mix the 2 up, and I did not know that when I first posted. (Much appreciate that description Malachai) Chemistry major I am not, but there lots of talk about high and low VOC like Hbb brought up. From The article it sounds like they are still calling it mineral spirits, but the ingredients are not remotely the same.
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Navy salad Member
Joined: 09 Sep 2008 Posts: 1865 | TRs | Pics Location: Woodinville |
Looking at the formula for the product shown in this link, it contains acetone which is a powerful, water soluble, solvent that I've read does dissolve silicone. It also dissolves liquid polyesters, but not cured polyester, like cloth. I'm pretty sure that nylon is unaffected by acetone. Regardless, whenever you use acetone, I recommend doing a test first to ensure it doesn't harm whatever you're using on (acetone does dissolve some plastics).
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DIYSteve seeking hygge
Joined: 06 Mar 2007 Posts: 12655 | TRs | Pics Location: here now |
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DIYSteve
seeking hygge
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Thu Aug 02, 2018 10:54 am
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Navy salad wrote: | acetone which is a powerful, water soluble, solvent that I've read does dissolve silicone. |
If that's true -- I don't know -- it might be the wrong stuff to cut GE Silicone II for seam sealing purposes. Silicone diluted in (traditional) mineral spirits creates a suspension. The mineral spirit evaporates off, leaving the silicone as a sealant. That might not happen if the silicone is dissolved (i.e., in solution).
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Navy salad Member
Joined: 09 Sep 2008 Posts: 1865 | TRs | Pics Location: Woodinville |
Well, as I mentioned, I'd definitely recommend doing a test on scraps first.
My guess is that regardless of whether this is a true solution or a suspension, once the acetone and any other additives evaporate, the silicone should adhere to the fabric.
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hbb Member
Joined: 06 Aug 2009 Posts: 405 | TRs | Pics
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hbb
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Fri Aug 03, 2018 2:33 pm
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Navy salad wrote: |
Looking at the formula for the product shown in this link, it contains acetone which is a powerful, water soluble, solvent that I've read does dissolve silicone. It also dissolves liquid polyesters, but not cured polyester, like cloth. I'm pretty sure that nylon is unaffected by acetone. Regardless, whenever you use acetone, I recommend doing a test first to ensure it doesn't harm whatever you're using on (acetone does dissolve some plastics). |
To be clear, that link was intended to provide some context regarding low VOC versions of certain solvents. I certainly wasn't suggesting the specific product mentioned in that article was appropriate for seam sealing applications.
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Navy salad Member
Joined: 09 Sep 2008 Posts: 1865 | TRs | Pics Location: Woodinville |
Didn't think you were "recommending" it -- I was just commenting on the viability of it. It could actually be fine on a nylon or even polyester tent.
But you remind me of one more probably obvious point: This stuff would NOT be good for silnylon!
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InFlight coated in DEET
Joined: 20 May 2015 Posts: 847 | TRs | Pics Location: Seattle area |
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InFlight
coated in DEET
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Tue Aug 14, 2018 1:01 pm
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“I went to the woods because I wished to live deliberately...” ― Henry David Thoreau
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schifferj Member
Joined: 07 Mar 2015 Posts: 224 | TRs | Pics Location: 509 |
DIYSteve wrote: | GE Silicone II cut with Klean-Strip brand mineral spirits from Home Depot has worked well for me. |
I forget the proper ratio. Is it 1:1?
Thanks!
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