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Glue bonds to nonstick surfaces and wipes clean with ethanol

cen.acs.org

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Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#71

Post by dotancohen »

culi wrote: post #54
pastage wrote: post #53

Earlier quoted context omitted.

delete EDIT 2: I think they are non-toxic and inert. But I tried to find my source for this and I am failing badly. so deleting this comment EDIT: I agree they are very waste full since they do not live that long. I have owned three non-stick pans, my cast iron pans have outlived all of them by decades.

Non-stick pans are fine if they are never heated above 500°F (260°C) and never scratched. In general, you probably shouldn't regularly use a nonstick pan for longer than 2 years. If it is scratched or heated above what it says on the label, then yes it is absolutely toxic.

I'd love to know more. I'm sure that I've scratched and overheated every pan I own.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#73

Post by missinglugnut »

ssl-3 wrote: post #65
murderfs wrote: post #20

> “Since ethanol is the main component of hand sanitizer, we believe it is possible to de-bond and recycle the adhesive by using hand sanitizer as a substitute in certain real-world situations,” Aida says. These sorts of environmental impact blurbs are hilarious. What kind of scenario are they envisioning where someone wants to remove and reuse a specialized adhesive bonding PTFE parts to something, but don't have et…

I can think of a few things that relate, as someone who is more in the business of taking random things apart for repair than building them new: In the mysterious future, I might have a widget that needs to be disassembled which uses this glue. And I'm at the shop right now; as I look around the bench, I don't see any industrial products that are primarily ethanol. It's just not something we typically have a use for.…

I think you misread...the quote is about recycling the adhesive itself with hand sanitizer, not pieces assembled with it. Running an industrial recycling process with unwanted hand sanitizer as a solvent is peak comedy.

Now for disassembly, hand sanitizer is usually intentionally thickened to be more of a gel, whereas alcohol will flow into tight spaces. If you're trying to dissolve a glue joint, ethanol or an ethanol water mixture will be orders of magnitude better at penetrating into the joint, and of course you can't dissolve glue you don't reach. So I still think you're gonna want a can of denatured alcohol on hand. It'll leave less residue too.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#74

Post by SV_BubbleTime »

danbruc wrote: post #61
SV_BubbleTime wrote: post #59

Earlier quoted context omitted.

Also… Uncure is a popular brand of cyanoacrylate remover. This is already a solved problem it seems.

Never heard that name, but according to their safety data sheet [1] it is 95+ % dimethylformamide [2]. Not too different from acetone, with a additional dimethylamin group. Acetone-free nail polish remover usually contains primarily ethyl acetate [3] which is also structurally similar. [1] https://bsi-inc.com/sds_pdf/sds_un_cure.pdf [2] https://en.wikipedia.org/wiki/Dimethylformamide [3] https://en.wikipedia.org/wiki…

It must be extremely low vapor pressure compared to acetone. Little smell and not an ultra airtight lid. Lasts forever.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#75

Post by entrepy123 »

danbruc wrote: post #61
SV_BubbleTime wrote: post #59

Earlier quoted context omitted.

Also… Uncure is a popular brand of cyanoacrylate remover. This is already a solved problem it seems.

Never heard that name, but according to their safety data sheet [1] it is 95+ % dimethylformamide [2]. Not too different from acetone, with a additional dimethylamin group. Acetone-free nail polish remover usually contains primarily ethyl acetate [3] which is also structurally similar. [1] https://bsi-inc.com/sds_pdf/sds_un_cure.pdf [2] https://en.wikipedia.org/wiki/Dimethylformamide [3] https://en.wikipedia.org/wiki…

Wow, speaking of safety -- I just looked it up to see if Un-Cure superglue/CA debonder would be safe enough to use on hands, or would just cause the chemicals to be broken down and absorbed through the skin at a fast rate too (which I personally wouldn't want), and the initial results I see say that it's ok to use on hands. Wow again.

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#76

Post by ssl-3 »

missinglugnut wrote: post #73
ssl-3 wrote: post #65

Earlier quoted context omitted.

I can think of a few things that relate, as someone who is more in the business of taking random things apart for repair than building them new: In the mysterious future, I might have a widget that needs to be disassembled which uses this glue. And I'm at the shop right now; as I look around the bench, I don't see any industrial products that are primarily ethanol. It's just not something we typically have a use for.…

I think you misread...the quote is about recycling the adhesive itself with hand sanitizer, not pieces assembled with it. Running an industrial recycling process with unwanted hand sanitizer as a solvent is peak comedy. Now for disassembly, hand sanitizer is usually intentionally thickened to be more of a gel, whereas alcohol will flow into tight spaces. If you're trying to dissolve a glue joint, ethanol or an ethano…

I interpreted "recycle" as ~synonymous with "reuse," which is a valid and common way of using the word.

If that's not what is intended with the word, then what is? The transformative form of recycling, like when the soup cans from last night's dinner get sent off to China to make new cars out of?

Is that kind of recycling even possible with this substance?

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#78

Post by markdown »

SV_BubbleTime wrote: post #60
BenjiWiebe wrote: post #32

Earlier quoted context omitted.

Not a lot of whimsy and delight in having your glue joint fail because the delightful & whimsical website gave bad advice.

Dude, people in 2026 still think duct tape is a “great product”. It’s pretty clear people have no fucking clue what makes a good adhesive. I’ll settle for just not seeing duct tape in the 10,000 places it doesn’t belong!!

Hey what do you use in place of duct tape?

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#79

Post by pessimizer »

danbruc wrote: post #51
gizmo686 wrote: post #31

Earlier quoted context omitted.

Who says this will be a specialized adhesive? If it works as advertised, it could be a super-glue alternative with easy unglueability. That would be an attractive consumer product; and the type of product that could easily end up on someones hands.

Superglue is probably two order of magnitude stronger, so I doubt that this will replace cyanoacrylates. And while ethanol or hand sanitizer will not help much with superglue, acetone or nail polish remover will remove it. Then again, acetone will attack more materials then ethanol, so a glue that can be removed with ethanol might still be beneficial.

> Superglue is probably two order of magnitude stronger, so I doubt that this will replace cyanoacrylates.

Superglue doesn't work on Teflon, or most plastics you want it to work on. Wanting to glue plastic things together isn't exactly a niche need. Being able to remove that glue with hand sanitizer would be wonderful.

https://www.quirkyscience.com/how-to-glue-teflon/

Re: Glue bonds to nonstick surfaces and wipes clean with ethanol

#80

Post by nick__m »

forgetfreeman wrote: post #49
dcrazy wrote: post #9

Earlier quoted context omitted.

Any reason to think this flower of fluorines (seriously, that thing looks INTENSE) would be any more environmentally safe than PFOA?

I'd be interested to see the Things I Won't Work With author's take on the synthesis given his usual reaction to fluorine chemistry

I made the same error as you, before realizing that in this molecule the fluorine is bounded to a carbon not an oxygen. Fluorine once bounded to a carbon won't move from there unless it receive a lot's of energy. A fluorine bounded to an oxygen really wants to be elsewhere and it's ready to pay a lot's of energy to make it happen! So the scary looking part of that chemical is incredibly stable and this is what make this substance potentially dangerous.
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